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Haurie L, Grandadam M, Pangburn E, Banerjee A, Burdin S, Pépin C. Bands renormalization and superconductivity in the strongly correlated Hubbard model using composite operators method. J Phys Condens Matter 2024; 36:255601. [PMID: 38215481 DOI: 10.1088/1361-648x/ad1e07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 01/12/2024] [Indexed: 01/14/2024]
Abstract
We use the composite operator method (COM) to analyze the strongly correlated repulsive Hubbard model, investigating the effect of nearest-neighbor hoppings up to fourth order on a square lattice. We consider two sets of self-consistent equations, one enforcing the Pauli principle and the other imposing charge-charge, spin-spin, and pair-pair correlations using a decoupling scheme developed by Roth (1969Phys. Rev.184451-9). We extract three distinct solutions from these equations: COM1 and COM2 by imposing the Pauli principle and one from Roth decoupling. An overview of the method studying the validity of particle-hole symmetry and the Luttinger theorem for each solution is presented. Additionally, we extend the initial basis to study superconductivity, concluding that it is induced by the Van Hove singularity. Finally, we include higher-order hoppings using realistic estimates for tight binding parameters and compare our results with ARPES measurements on cuprates.
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Affiliation(s)
- L Haurie
- Institut de Physique Théorique, Université Paris Saclay, CEA CNRS, Orme des Merisiers, 91190 Gif-sur-Yvette Cedex, France
| | - M Grandadam
- Department of Physics and Physical Oceanography, Memorial University of Newfoundland, St. John's, Newfoundland & Labrador A1B 3X7, Canada
| | - E Pangburn
- Institut de Physique Théorique, Université Paris Saclay, CEA CNRS, Orme des Merisiers, 91190 Gif-sur-Yvette Cedex, France
| | - A Banerjee
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - S Burdin
- Université de Bordeaux, CNRS, LOMA, UMR 5798, F-33400 Talence, France
| | - C Pépin
- Institut de Physique Théorique, Université Paris Saclay, CEA CNRS, Orme des Merisiers, 91190 Gif-sur-Yvette Cedex, France
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Calvez E, Bounmany P, Somlor S, Xaybounsou T, Viengphouthong S, Keosenhom S, Brey PT, Lacoste V, Grandadam M. Multiple chikungunya virus introductions in Lao PDR from 2014 to 2020. PLoS One 2022; 17:e0271439. [PMID: 35839218 PMCID: PMC9286254 DOI: 10.1371/journal.pone.0271439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 06/30/2022] [Indexed: 12/04/2022] Open
Abstract
The first documented chikungunya virus (CHIKV) outbreak in Lao People’s Democratic Republic (Lao PDR) occurred in 2012–2013. Since then, several imported and a few autochthonous cases were identified by the national arbovirus surveillance network. The present study aimed to summarize the main genetic features of the CHIKV strains detected in Lao PDR between 2014 and 2020. Samples from Lao patients presenting symptoms compatible with a CHIKV infection were centralized in Vientiane Capital city for real-time RT-PCR screening. Molecular epidemiology was performed by sequencing the E2-6K-E1 region. From 2014 to 2020, two Asian lineage isolates (e.g. French Polynesia; Indonesia), one ECSA-IOL lineage isolate (e.g. Thailand) and one unclassified (e.g. Myanmar) were imported in Vientiane Capital city. Sequences from the autochthonous cases recorded in the Central and Southern parts of the country between July and September 2020 belonged to the ECSA-IOL lineage and clustered with CHIKV strains recently detected in neighboring countries. These results demonstrate the multiple CHIKV introductions in Lao PDR since 2014 and provide evidence for sporadic and time-limited circulation of CHIKV in the country. Even if the circulation of CHIKV seems to be geographically and temporally limited in Lao PDR, the development of international tourism and trade may cause future outbreaks of CHIKV in the country and at the regional level.
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Affiliation(s)
- Elodie Calvez
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
- * E-mail:
| | - Phaithong Bounmany
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
| | - Somphavanh Somlor
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
| | - Thonglakhone Xaybounsou
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
| | - Souksakhone Viengphouthong
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
| | - Sitsana Keosenhom
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
| | - Paul T. Brey
- Medical Entomology and Vector-Borne Disease Unit, Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
| | - Vincent Lacoste
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
| | - Marc Grandadam
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
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Boeras D, Diagne CT, Pelegrino JL, Grandadam M, Duong V, Dussart P, Brey P, Ruiz D, Adati M, Wilder-Smith A, Falconar AK, Romero CM, Guzman M, Hasanin N, Sall A, Peeling RW. Evaluation of Zika rapid tests as aids for clinical diagnosis and epidemic preparedness. EClinicalMedicine 2022; 49:101478. [PMID: 35747186 PMCID: PMC9167860 DOI: 10.1016/j.eclinm.2022.101478] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 05/01/2022] [Accepted: 05/10/2022] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Development and evaluation of diagnostics for diseases of epidemic potential are often funded during epidemics, but not afterwards, leaving countries unprepared for the next epidemic. United Nations Children's Emergency Fund (UNICEF) partnered with the United States Agency for International Development (USAID) to address this important gap by investing in an advance purchase commitment (APC) mechanism to accelerate the development and evaluation of Zika rapid diagnostic tests (RDTs) for case detection and surveillance. This paper describes the performance evaluation of five Zika RDTs eligible for procurement. METHODS A network of European Union-funded ZikaPLAN sites in Africa, Asia, Latin America with access to relevant serum specimens were selected to evaluate RDTs developed for the UNICEF APC mechanism. A standardised protocol and evaluation panels were developed and a call for specimens for the evaluation panels issued to different sites. Each site contributed specimens to the evaluation from their biobank. Data were collated, analysed and presented to the UNICEF Procurement Review Group for review. FINDINGS Three RDTs met the criteria for UNICEF procurement of sensitivity and specificity of 85% against a refence standard. The sensitivity/specificity of the ChemBio anti-Zika Virus (ZIKV) immunoglobulin M (IgM) test was 86.4 %/86.7% and the ChemBio ZCD system for anti-ZIKV IgM was 79.0%/97.1%, anti-dengue virus (DENV) IgM 90.0%/89.2%, anti-Chikungunya virus (CHIKV) IgM 90.6%/97.2%. The sensitivity/specificity of the SD Biosensor anti-ZIKV IgM was 96.8 %/90.8%, anti-DENV IgM 71.8%/83.5%, the DENV nonstructural protein 1 (NS1) glycoprotein 90.0%/90.2%, anti- yellow fever virus (YFV) IgM 84.6%/92.4%, anti-CHIKV IgM 86.3%/97.5%. INTERPRETATION Three RDTs fulfilled the performance thresholds set by WHO and were eligible for UNICEF procurement. These tests will improve the diagnosis of ZIKV and other arboviral infections as well as providing countries with better tools for surveillance and response to future epidemics. FUNDING This work was supported by the USAID grant GHA-G-00-07-00007 and ZikaPLAN (European Union's Horizon 2020 Research and Innovation Programme under Grant Agreement No. 734584).
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Affiliation(s)
| | | | | | | | - Veasna Duong
- Institute Pasteur du Cambodge, Phnom Penh, Cambodia
| | | | - Paul Brey
- Institute Pasteur du Laos, Vientiane Laos
| | | | - Marisa Adati
- National Institute for Quality Control in Health, Rio de Janeiro, Brazil
| | - Annelies Wilder-Smith
- Umea University, Umea, Sweden
- Clinical Research Department, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK
| | | | | | | | | | | | - Rosanna W. Peeling
- Clinical Research Department, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK
- Corresponding author.
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Koch L, Nespoulous O, Turc J, Linard C, Martigne P, Beaussac M, Murris S, Ferraris O, Grandadam M, Frenois-Veyrat G, Lopes AA, Boutonnet M, Biot F. Risk Analysis by Failure Modes, Effects and Criticality Analysis and Biosafety Management During Collective Air Medical Evacuation of Critically Ill Coronavirus Disease 2019 Patients. Air Med J 2022; 41:88-95. [PMID: 35248351 PMCID: PMC8529270 DOI: 10.1016/j.amj.2021.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 09/25/2021] [Accepted: 10/13/2021] [Indexed: 11/27/2022]
Abstract
In March 2020, coronavirus disease 2019 (COVID-19) caused an overwhelming pandemic. To relieve overloaded intensive care units in the most affected regions, the French Ministry of Defence triggered collective air medical evacuations (medevacs) on board an Airbus A330 Multi Role Tanker Transport of the French Air Force. Such a collective air medevac is a big challenge regarding biosafety; until now, only evacuations of a single symptomatic patient with an emergent communicable disease, such as Ebola virus disease, have been conducted. However, the COVID-19 pandemic required collective medevacs for critically ill patients and involved a virus that little is known about still. Thus, we performed a complete risk analysis using a process map and FMECA (Failure Modes, Effects and Criticality Analysis) to assess the risk and implement mitigation measures for health workers, flight crew, and the environment. We report the biosafety management experienced during 6 flights with a total of 36 critically ill COVID-19-positive patients transferred with no casualties while preserving both staffs and aircraft.
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Affiliation(s)
- Lionel Koch
- Bacteriology Unit, French Armed Forces Biomedical Research Institute, Paris, France.
| | - Olivier Nespoulous
- Aeromedical Research and Training Unit, French Armed Forces Biomedical Research Institute, Paris, France
| | - Jean Turc
- Department of Anesthesiology and Intensive Care Unit, Military Teaching Hospital, Lyon, France; Department of Anesthesiology and Intensive Care Unit, Edouard Herriot Hospital, Lyon, France
| | - Cyril Linard
- Analytics Developments and Bioanalysis Unit, French Armed Forces Biomedical Research Institute, Paris, France
| | - Patrick Martigne
- Radiobiology Unit, French Armed Forces Biomedical Research Institute, Paris, France
| | | | | | - Olivier Ferraris
- Virology Unit, French Armed Forces Biomedical Research Institute, Paris, France
| | - Marc Grandadam
- Virology Unit, French Armed Forces Biomedical Research Institute, Paris, France
| | | | - Anne-Aurélie Lopes
- Pediatric Emergency Department, AP-HP, Robert Debre Hospital, Sorbonne University, Paris, France
| | - Mathieu Boutonnet
- Department of Anesthesiology and Intensive Care Unit, Military Teaching Hospital Percy, Clamart, France; Val-de-Grâce Military Medicine Academy, Paris, France
| | - Fabrice Biot
- Bacteriology Unit, French Armed Forces Biomedical Research Institute, Paris, France
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Calvez E, Bounmany P, Balière C, Somlor S, Viengphouthong S, Xaybounsou T, Keosenhom S, Fangkham K, Brey PT, Caro V, Lacoste V, Grandadam M. Using Background Sequencing Data to Anticipate DENV-1 Circulation in the Lao PDR. Microorganisms 2021; 9:microorganisms9112263. [PMID: 34835389 PMCID: PMC8617722 DOI: 10.3390/microorganisms9112263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/21/2021] [Accepted: 10/25/2021] [Indexed: 11/29/2022] Open
Abstract
Since its first detection in 1979, dengue fever has been considered a major public health issue in the Lao People’s Democratic Republic (PDR). Dengue virus (DENV) serotype 1 was the cause of an epidemic in 2010–2011. Between 2012 and 2020, major outbreaks due successively to DENV-3, DENV-4 and recently DENV-2 have been recorded. However, DENV-1 still co-circulated in the country over this period. Here, we summarize epidemiological and molecular data of DENV-1 between 2016 and 2020 in the Lao PDR. Our data highlight the continuous circulation of DENV-1 in the country at levels ranging from 16% to 22% among serotyping tests. In addition, the phylogenetic analysis has revealed the circulation of DENV-1 genotype I at least since 2008 with a co-circulation of different clusters. Sequence data support independent DENV-1 introductions in the Lao PDR correlated with an active circulation of this serotype at the regional level in Southeast Asia. The maintenance of DENV-1 circulation over the last ten years supports a low level of immunity against this serotype within the Lao population. Thereby, the risk of a DENV-1 epidemic cannot be ruled out in the future, and this emphasizes the importance of maintaining an integrated surveillance approach to prevent major outbreaks.
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Affiliation(s)
- Elodie Calvez
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (P.B.); (S.S.); (S.V.); (T.X.); (S.K.); (K.F.); (V.L.); (M.G.)
- Correspondence:
| | - Phaithong Bounmany
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (P.B.); (S.S.); (S.V.); (T.X.); (S.K.); (K.F.); (V.L.); (M.G.)
| | - Charlotte Balière
- Environment and Infectious Risks Unit, Institut Pasteur, 75015 Paris, France; (C.B.); (V.C.)
| | - Somphavanh Somlor
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (P.B.); (S.S.); (S.V.); (T.X.); (S.K.); (K.F.); (V.L.); (M.G.)
| | - Souksakhone Viengphouthong
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (P.B.); (S.S.); (S.V.); (T.X.); (S.K.); (K.F.); (V.L.); (M.G.)
| | - Thonglakhone Xaybounsou
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (P.B.); (S.S.); (S.V.); (T.X.); (S.K.); (K.F.); (V.L.); (M.G.)
| | - Sitsana Keosenhom
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (P.B.); (S.S.); (S.V.); (T.X.); (S.K.); (K.F.); (V.L.); (M.G.)
| | - Kitphithak Fangkham
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (P.B.); (S.S.); (S.V.); (T.X.); (S.K.); (K.F.); (V.L.); (M.G.)
- Lao Army Institute for Preventive Medicine, Vientiane 01030, Laos
| | - Paul T. Brey
- Medical Entomology and Vector Borne Disease Unit, Institut Pasteur du Laos, Vientiane 01030, Laos;
| | - Valérie Caro
- Environment and Infectious Risks Unit, Institut Pasteur, 75015 Paris, France; (C.B.); (V.C.)
| | - Vincent Lacoste
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (P.B.); (S.S.); (S.V.); (T.X.); (S.K.); (K.F.); (V.L.); (M.G.)
| | - Marc Grandadam
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (P.B.); (S.S.); (S.V.); (T.X.); (S.K.); (K.F.); (V.L.); (M.G.)
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Luo DS, Zhou ZJ, Ge XY, Bourhy H, Shi ZL, Grandadam M, Dacheux L. Genome Characterization of Bird-Related Rhabdoviruses Circulating in Africa. Viruses 2021; 13:v13112168. [PMID: 34834974 PMCID: PMC8622386 DOI: 10.3390/v13112168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 10/21/2021] [Accepted: 10/22/2021] [Indexed: 11/16/2022] Open
Abstract
Rhabdoviridae is the most diverse family of the negative, single-stranded RNA viruses, which includes 40 ecologically different genera that infect plants, insects, reptiles, fishes, and mammals, including humans, and birds. To date, only a few bird-related rhabdoviruses among the genera Sunrhavirus, Hapavirus, and Tupavirus have been described and analyzed at the molecular level. In this study, we characterized seven additional and previously unclassified rhabdoviruses, which were isolated from various bird species collected in Africa during the 1960s and 1970s. Based on the analysis of their genome sequences obtained by next generation sequencing, we observed a classical genomic structure, with the presence of the five canonical rhabdovirus genes, i.e., nucleoprotein (N), phosphoprotein (P), matrix protein (M), glycoprotein (G), and polymerase (L). In addition, different additional open reading frames which code putative proteins of unknown function were identified, with the common presence of the C and the SH proteins, within the P gene and between the M and G genes, respectively. Genetic comparisons and phylogenetic analysis demonstrated that these seven bird-related rhabdoviruses could be considered as putative new species within the genus Sunrhavirus, where they clustered into a single group (named Clade III), a companion to two other groups that encompass mainly insect-related viruses. The results of this study shed light on the high diversity of the rhabdoviruses circulating in birds, mainly in Africa. Their close relationship with other insect-related sunrhaviruses raise questions about their potential role and impact as arboviruses that affect bird communities.
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Affiliation(s)
- Dong-Sheng Luo
- CAS Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China; (D.-S.L.); (Z.-L.S.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- Lyssavirus Epidemiology and Neuropathology Unit, Institut Pasteur, Université de Paris, 75015 Paris, France;
| | - Zhi-Jian Zhou
- Hunan Provincial Key Laboratory of Medical Virology, College of Biology, Hunan University, Changsha 410082, China; (Z.-J.Z.); (X.-Y.G.)
| | - Xing-Yi Ge
- Hunan Provincial Key Laboratory of Medical Virology, College of Biology, Hunan University, Changsha 410082, China; (Z.-J.Z.); (X.-Y.G.)
| | - Hervé Bourhy
- Lyssavirus Epidemiology and Neuropathology Unit, Institut Pasteur, Université de Paris, 75015 Paris, France;
| | - Zheng-Li Shi
- CAS Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China; (D.-S.L.); (Z.-L.S.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Marc Grandadam
- Institut de Recherche Biomédicale des Armées, 91220 Bretigny-sur-Orge, France;
- National Reference Center for Arboviruses, Institut Pasteur, Université de Paris, 75015 Paris, France
| | - Laurent Dacheux
- Lyssavirus Epidemiology and Neuropathology Unit, Institut Pasteur, Université de Paris, 75015 Paris, France;
- Correspondence: ; Tel.: +33-140613303
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Telle O, Choisy M, Somlor S, Benkimoun S, Pommelet V, Grandadam M. Dengue geography in Vientiane Capital, 2012–2019: Combining multiple datasets to understand virus spread in an endemic city. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.11.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Calvez E, Pommelet V, Somlor S, Pompon J, Viengphouthong S, Bounmany P, Chindavong TA, Xaybounsou T, Prasayasith P, Keosenhom S, Brey PT, Telle O, Choisy M, Marcombe S, Grandadam M. Trends of the Dengue Serotype-4 Circulation with Epidemiological, Phylogenetic, and Entomological Insights in Lao PDR between 2015 and 2019. Pathogens 2020; 9:pathogens9090728. [PMID: 32899416 PMCID: PMC7557816 DOI: 10.3390/pathogens9090728] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/28/2020] [Accepted: 08/30/2020] [Indexed: 12/14/2022] Open
Abstract
Dengue outbreaks have regularly been recorded in Lao People's Democratic Republic (PDR) since the first detection of the disease in 1979. In 2012, an integrated arbovirus surveillance network was set up in Lao PDR and an entomological surveillance has been implemented since 2016 in Vientiane Capital. Here, we report a study combining epidemiological, phylogenetic, and entomological analyzes during the largest DENV-4 epidemic ever recorded in Lao PDR (2015-2019). Strikingly, from 2015 to 2019, we reported the DENV-4 emergence and spread at the country level after two large epidemics predominated by DENV-3 and DENV-1, respectively, in 2012-2013 and 2015. Our data revealed a significant difference in the median age of the patient infected by DENV-4 compared to the other serotypes. Phylogenetic analysis demonstrated the circulation of DENV-4 Genotype I at the country level since at least 2013. The entomological surveillance showed a predominance of Aedesaegypti compared to Aedesalbopictus and high abundance of these vectors in dry and rainy seasons between 2016 and 2019, in Vientiane Capital. Overall, these results emphasized the importance of an integrated approach to evaluate factors, which could impact the circulation and the epidemiological profile of dengue viruses, especially in endemic countries like Lao PDR.
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Affiliation(s)
- Elodie Calvez
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Lao PDR, Vientiane 01030, Laos; (S.S.); (S.V.); (P.B.); (T.A.C.); (T.X.); (P.P.); (S.K.); (M.G.)
- Correspondence:
| | - Virginie Pommelet
- Epidemiology Unit, Institut Pasteur du Lao PDR, Vientiane 01030, Laos;
| | - Somphavanh Somlor
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Lao PDR, Vientiane 01030, Laos; (S.S.); (S.V.); (P.B.); (T.A.C.); (T.X.); (P.P.); (S.K.); (M.G.)
| | - Julien Pompon
- Department of Emerging Infectious Diseases, Duke-NUS Medical School, Singapore 169857, Singapore;
- MIVEGEC, University of Montpellier, CNRS, IRD, 34394 Montpellier, France
| | - Souksakhone Viengphouthong
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Lao PDR, Vientiane 01030, Laos; (S.S.); (S.V.); (P.B.); (T.A.C.); (T.X.); (P.P.); (S.K.); (M.G.)
| | - Phaithong Bounmany
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Lao PDR, Vientiane 01030, Laos; (S.S.); (S.V.); (P.B.); (T.A.C.); (T.X.); (P.P.); (S.K.); (M.G.)
| | - Thep Aksone Chindavong
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Lao PDR, Vientiane 01030, Laos; (S.S.); (S.V.); (P.B.); (T.A.C.); (T.X.); (P.P.); (S.K.); (M.G.)
| | - Thonglakhone Xaybounsou
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Lao PDR, Vientiane 01030, Laos; (S.S.); (S.V.); (P.B.); (T.A.C.); (T.X.); (P.P.); (S.K.); (M.G.)
| | - Phoyphaylinh Prasayasith
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Lao PDR, Vientiane 01030, Laos; (S.S.); (S.V.); (P.B.); (T.A.C.); (T.X.); (P.P.); (S.K.); (M.G.)
| | - Sitsana Keosenhom
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Lao PDR, Vientiane 01030, Laos; (S.S.); (S.V.); (P.B.); (T.A.C.); (T.X.); (P.P.); (S.K.); (M.G.)
| | - Paul T. Brey
- Medical Entomology and Vector Borne Disease Unit, Institut Pasteur du Lao PDR, Vientiane 01030, Laos; (P.T.B.); (S.M.)
| | - Olivier Telle
- Centre de Sciences Humaines (CHS), Centre National de la Recherche Scientifique (CNRS), Delhi 110001, India;
- Center for Policy Research (CPR), Delhi 110001, India
| | - Marc Choisy
- Nuffield Department of Medicine, University of Oxford, Oxford OX3 7LF, UK;
- Oxford University Clinical Research Unit, Ho Chi Minh City 700000, Vietnam
| | - Sébastien Marcombe
- Medical Entomology and Vector Borne Disease Unit, Institut Pasteur du Lao PDR, Vientiane 01030, Laos; (P.T.B.); (S.M.)
| | - Marc Grandadam
- Arbovirus and Emerging Viral Diseases Laboratory, Institut Pasteur du Lao PDR, Vientiane 01030, Laos; (S.S.); (S.V.); (P.B.); (T.A.C.); (T.X.); (P.P.); (S.K.); (M.G.)
- Institut de Recherche Biomédicale des Armées, 91220 Brétigny-sur-Orge, France
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Díaz-Menéndez M, Esteban ET, Ujiie M, Calleri G, Rothe C, Malvy D, Nicastri E, Bissinger AL, Grandadam M, Alpern JD, Gobbi F, Schlagenhauf P, Duvignaud A, Javelle E, Nakamoto T, Antinori S, Hamer DH. Travel-associated chikungunya acquired in Myanmar in 2019. ACTA ACUST UNITED AC 2020; 25. [PMID: 31937394 PMCID: PMC6961262 DOI: 10.2807/1560-7917.es.2020.25.1.1900721] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Eighteen cases of chikungunya virus infection in travellers returning from Myanmar were reported to the GeoSentinel Surveillance Network, its subnetwork EuroTravNet and TropNet in 2019, reflecting an ongoing local outbreak. This report reinforces the importance of travellers as sentinels of emerging arboviral outbreaks and highlights the importance of vigilance for imported cases, due to the potential for dissemination of the virus into areas with competent local vectors and conducive environmental conditions.
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Affiliation(s)
- Marta Díaz-Menéndez
- These authors contributed equally to the work.,National Referral Unit for Imported Tropical Diseases. Department of Internal Medicine. Hospital Universitario La Paz-Carlos III, IdiPAZ, Madrid, Spain
| | - Elena Trigo Esteban
- These authors contributed equally to the work.,National Referral Unit for Imported Tropical Diseases. Department of Internal Medicine. Hospital Universitario La Paz-Carlos III, IdiPAZ, Madrid, Spain
| | - Mugen Ujiie
- Vaccination Support Center, Disease Control and Prevention Center. National Center for Global Health and Medicine, Tokyo, Japan
| | - Guido Calleri
- Travel Medicine Unit. Amedeo di Savoia Hospital. ASL Città di Torino, Torino, Italy
| | - Camilla Rothe
- LMU Hospital Centre, Division of Infectious Diseases and Tropical Medicine, Munich, Germany
| | - Denis Malvy
- Department of Infectious Diseases and Tropical Medicine, CHU de Bordeaux & INSERM 1219, University of Bordeaux, Bordeaux, France
| | - Emanuele Nicastri
- National Institute for Infectious Diseases Lazzaro Spallanzani, IRCCS, Rome, Italy
| | - Alfred L Bissinger
- Institute for Tropical Medicine, Department of Internal Medicine, University Hospital Tübingen, Germany
| | - Marc Grandadam
- Arbovirus & Emerging viral diseases laboratory. Institut Pasteur du Laos, Vientiane, Laos
| | - Jonathan D Alpern
- Department of Travel and Tropical Medicine, HealthPartners; Department of Medicine, University of Minnesota, Minneapolis, United States
| | - Federico Gobbi
- Department of Infectious /Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Negrar, Verona, Italy
| | - Patricia Schlagenhauf
- University of Zürich Centre for Travel Medicine, WHO Collaborating Centre for Travellers' Health, Zürich, Switzerland
| | - Alexandre Duvignaud
- Department of Infectious Diseases and Tropical Medicine, CHU de Bordeaux & INSERM 1219, University of Bordeaux, Bordeaux, France
| | - Emilie Javelle
- Laveran Military Teaching Hospital, Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France
| | - Takato Nakamoto
- Disease Control and Prevention Center, National Center for Global health and Medicine, Tokyo, Japan
| | - Spinello Antinori
- Department of Biomedical and Clinical Sciences "L Sacco", University of Milan. Tropical Medicine Unit, ASST Fatebenefratelli Sacco, Milan, Italy
| | - Davidson H Hamer
- Department of Global Health and Boston University School of Public Health and Section of Infectious Diseases, Department of Medicine, Boston University School of Medicine, Boston, MA, United States
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10
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Calvez E, Somlor S, Viengphouthong S, Balière C, Bounmany P, Keosenhom S, Caro V, Grandadam M. Rapid genotyping protocol to improve dengue virus serotype 2 survey in Lao PDR. PLoS One 2020; 15:e0237384. [PMID: 32764809 PMCID: PMC7413503 DOI: 10.1371/journal.pone.0237384] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 07/24/2020] [Indexed: 12/30/2022] Open
Abstract
Dengue fever is one of the major public health problems in Lao PDR. Over the last decade, dengue virus (DENV) epidemics were characterized by a novel predominant serotype accompanied by at least two other serotypes. Since 2008, DENV-2 circulated at a low level in Lao PDR but its epidemiologic profile changed at the end of 2018. Indeed, the number of confirmed DENV-2 cases suddenly increased in October 2018 and DENV-2 became predominant at the country level in early 2019. We developed a Genotype Screening Protocol (GSP) to determine the origin(s) of the Lao DENV-2 and study their genetic polymorphism. With a good correlation with full envelope gene sequencing data, this molecular epidemiology tool evidence the co-circulation of two highly polymorphic DENV-2 genotypes, i.e. Asian I and Cosmopolitan genotypes, over the last five years, suggesting multiple introductions of DENV-2 in the country. GSP approach provides relevant first line information that may help countries with limited laboratory resources to reinforce their capabilities to DENV-2 and to follow the epidemics progresses and assess situations at the regional level.
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Affiliation(s)
- Elodie Calvez
- Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
- * E-mail:
| | - Somphavanh Somlor
- Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
| | | | | | | | - Sitsana Keosenhom
- Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
| | | | - Marc Grandadam
- Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
- Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France
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11
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Miot EF, Calvez E, Aubry F, Dabo S, Grandadam M, Marcombe S, Oke C, Logan JG, Brey PT, Lambrechts L. Risk of arbovirus emergence via bridge vectors: case study of the sylvatic mosquito Aedes malayensis in the Nakai district, Laos. Sci Rep 2020; 10:7750. [PMID: 32385369 PMCID: PMC7210265 DOI: 10.1038/s41598-020-64696-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 04/03/2020] [Indexed: 12/20/2022] Open
Abstract
Many emerging arboviruses of global public health importance, such as dengue virus (DENV) and yellow fever virus (YFV), originated in sylvatic transmission cycles involving wild animals and forest-dwelling mosquitoes. Arbovirus emergence in the human population typically results from spillover transmission via bridge vectors, which are competent mosquitoes feeding on both humans and wild animals. Another related, but less studied concern, is the risk of 'spillback' transmission from humans into novel sylvatic cycles. We colonized a sylvatic population of Aedes malayensis from a forested area of the Nakai district in Laos to evaluate its potential as an arbovirus bridge vector. We found that this Ae. malayensis population was overall less competent for DENV and YFV than an urban population of Aedes aegypti. Olfactometer experiments showed that our Ae. malayensis colony did not display any detectable attraction to human scent in laboratory conditions. The relatively modest vector competence for DENV and YFV, combined with a lack of detectable attraction to human odor, indicate a low potential for this sylvatic Ae. malayensis population to act as an arbovirus bridge vector. However, we caution that opportunistic blood feeding on humans by sylvatic Ae. malayensis may occasionally contribute to bridge sylvatic and human transmission cycles.
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Affiliation(s)
- Elliott F Miot
- Insect-Virus Interactions Unit, Institut Pasteur, UMR2000, CNRS, Paris, France. .,Sorbonne Université, Collège doctoral, Paris, France. .,Medical Entomology and Vector-Borne Disease Unit, Institut Pasteur du Laos, Vientiane, Lao PDR.
| | - Elodie Calvez
- Arbovirus and Emerging Viral diseases Laboratory, Institut Pasteur du Laos, Vientiane, Lao PDR
| | - Fabien Aubry
- Insect-Virus Interactions Unit, Institut Pasteur, UMR2000, CNRS, Paris, France
| | - Stéphanie Dabo
- Insect-Virus Interactions Unit, Institut Pasteur, UMR2000, CNRS, Paris, France
| | - Marc Grandadam
- Arbovirus and Emerging Viral diseases Laboratory, Institut Pasteur du Laos, Vientiane, Lao PDR
| | - Sébastien Marcombe
- Medical Entomology and Vector-Borne Disease Unit, Institut Pasteur du Laos, Vientiane, Lao PDR
| | - Catherine Oke
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - James G Logan
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Paul T Brey
- Medical Entomology and Vector-Borne Disease Unit, Institut Pasteur du Laos, Vientiane, Lao PDR
| | - Louis Lambrechts
- Insect-Virus Interactions Unit, Institut Pasteur, UMR2000, CNRS, Paris, France.
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12
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Temmam S, Vongphayloth K, Hertz JC, Sutherland I, Douangboubpha B, Grandadam M, Bigot T, Brey PT, Eloit M. Six Nearly Complete Genome Segments of a Novel Reovirus Identified in Laotian Batflies. Microbiol Resour Announc 2019; 8:e00733-19. [PMID: 31727698 PMCID: PMC6856264 DOI: 10.1128/mra.00733-19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 10/18/2019] [Indexed: 11/23/2022] Open
Abstract
As part of the characterization of viral communities of Laotian batflies, we report here the sequencing of six nearly complete genome segments of a novel reovirus identified in Laotian batflies that is distantly related to reoviruses recently reported in various Diptera species.
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Affiliation(s)
- Sarah Temmam
- Institut Pasteur, Biology of Infection Unit, Inserm U1117, Pathogen Discovery Laboratory, Paris, France
| | - Khamsing Vongphayloth
- Laboratory of Vector Borne Diseases, Institut Pasteur du Laos, Vientiane, Lao People's Democratic Republic
| | | | - Ian Sutherland
- United States Naval Medical Research Unit Two, Singapore
- United States Navy Entomology Center of Excellence, NAS Jacksonville, Jacksonville, Florida, USA
| | - Bounsavane Douangboubpha
- Faculty of Environmental Science, Lao National University, Vientiane, Lao People's Democratic Republic
| | - Marc Grandadam
- Arbovirology and Emerging Virus Laboratory, Institut Pasteur du Laos, Vientiane, Lao People's Democratic Republic
| | - Thomas Bigot
- Institut Pasteur, Biology of Infection Unit, Inserm U1117, Pathogen Discovery Laboratory, Paris, France
- Institut Pasteur-Bioinformatics and Biostatistics Hub-Computational Biology Department, Institut Pasteur, USR 3756 CNRS, Paris, France
| | - Paul T Brey
- Laboratory of Vector Borne Diseases, Institut Pasteur du Laos, Vientiane, Lao People's Democratic Republic
| | - Marc Eloit
- Institut Pasteur, Biology of Infection Unit, Inserm U1117, Pathogen Discovery Laboratory, Paris, France
- National Veterinary School of Alfort, Paris-Est University, Maisons-Alfort, France
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13
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Temmam S, Bigot T, Chrétien D, Gondard M, Pérot P, Pommelet V, Dufour E, Petres S, Devillers E, Hoem T, Pinarello V, Hul V, Vongphayloth K, Hertz JC, Loiseau I, Dumarest M, Duong V, Vayssier-Taussat M, Grandadam M, Albina E, Dussart P, Moutailler S, Cappelle J, Brey PT, Eloit M. Insights into the Host Range, Genetic Diversity, and Geographical Distribution of Jingmenviruses. mSphere 2019; 4:e00645-19. [PMID: 31694898 PMCID: PMC6835211 DOI: 10.1128/msphere.00645-19] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 10/07/2019] [Indexed: 12/21/2022] Open
Abstract
Jingmenvirus is a recently identified group of segmented RNA viruses phylogenetically linked with unsegmented Flaviviridae viruses. Primarily identified in various tick genera originating in China, Jingmenvirus geographical distribution has rapidly expanded to cover Africa, South America, Caribbean, and Europe. The identification of Jingmen-related viruses in various mammals, including febrile humans, opens the possibility that Jingmenviruses may be novel tick-borne arboviruses. In this study, we aimed at increasing knowledge of the host range, genetic diversity, and geographical distribution of Jingmenviruses by reporting for the first time the identification of Jingmenviruses associated with Rhipicephalus microplus ticks originating in the French Antilles (Guadeloupe and Martinique islands), with Amblyomma testudinarium ticks in Lao PDR, and with Ixodes ricinus ticks in metropolitan France, and from urine of Pteropus lylei bats in Cambodia. Analyses of the relationships between the different Jingmenvirus genomes resulted in the identification of three main phylogenic subclades, each of them containing both tick-borne and mammal-borne strains, reinforcing the idea that Jingmenviruses may be considered as tick-borne arboviruses. Finally, we estimated the prevalence of Jingmenvirus-like infection using luciferase immunoprecipitation assay screening (LIPS) of asymptomatic humans and cattle highly exposed to tick bites. Among 70 French human, 153 Laotian human, and 200 Caribbean cattle sera tested, only one French human serum was found (slightly) positive, suggesting that the prevalence of Jingmenvirus human and cattle infections in these areas is probably low.IMPORTANCE Several arboviruses emerging as new pathogens for humans and domestic animals have recently raised public health concern and increased interest in the study of their host range and in detection of spillover events. Recently, a new group of segmented Flaviviridae-related viruses, the Jingmenviruses, has been identified worldwide in many invertebrate and vertebrate hosts, pointing out the issue of whether they belong to the arbovirus group. The study presented here combined whole-genome sequencing of three tick-borne Jingmenviruses and one bat-borne Jingmenvirus with comprehensive phylogenetic analyses and high-throughput serological screening of human and cattle populations exposed to these viruses to contribute to the knowledge of Jingmenvirus host range, geographical distribution, and mammalian exposure.
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Affiliation(s)
- Sarah Temmam
- Institut Pasteur, Biology of Infection Unit, Inserm U1117, Pathogen Discovery Laboratory, Institut Pasteur, Paris, France
| | - Thomas Bigot
- Institut Pasteur, Biology of Infection Unit, Inserm U1117, Pathogen Discovery Laboratory, Institut Pasteur, Paris, France
- Institut Pasteur-Bioinformatics and Biostatistics Hub-Computational Biology Department, USR 3756 CNRS, Institut Pasteur, Paris, France
| | - Delphine Chrétien
- Institut Pasteur, Biology of Infection Unit, Inserm U1117, Pathogen Discovery Laboratory, Institut Pasteur, Paris, France
| | - Mathilde Gondard
- UMR ASTRE, CIRAD, INRA, Université de Montpellier, Montpellier, France
- CIRAD, UMR ASTRE, Petit-Bourg, Guadeloupe, France
- UMR BIPAR, Animal Health Laboratory, ANSES, INRA, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, Maisons-Alfort, France
| | - Philippe Pérot
- Institut Pasteur, Biology of Infection Unit, Inserm U1117, Pathogen Discovery Laboratory, Institut Pasteur, Paris, France
| | - Virginie Pommelet
- Institut Pasteur du Laos, Vientiane, Lao People's Democratic Republic
| | - Evelyne Dufour
- Institut Pasteur, Production and Purification of Recombinant Proteins Technological Platform-C2RT, Institut Pasteur, Paris, France
| | - Stéphane Petres
- Institut Pasteur, Production and Purification of Recombinant Proteins Technological Platform-C2RT, Institut Pasteur, Paris, France
| | - Elodie Devillers
- UMR BIPAR, Animal Health Laboratory, ANSES, INRA, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, Maisons-Alfort, France
| | - Thavry Hoem
- Virology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia
| | - Valérie Pinarello
- UMR ASTRE, CIRAD, INRA, Université de Montpellier, Montpellier, France
- CIRAD, UMR ASTRE, Petit-Bourg, Guadeloupe, France
| | - Vibol Hul
- Virology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia
| | | | | | - Irène Loiseau
- Institut Pasteur, Biology of Infection Unit, Inserm U1117, Pathogen Discovery Laboratory, Institut Pasteur, Paris, France
| | - Marine Dumarest
- Institut Pasteur, Biology of Infection Unit, Inserm U1117, Pathogen Discovery Laboratory, Institut Pasteur, Paris, France
| | - Veasna Duong
- Virology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia
| | - Muriel Vayssier-Taussat
- UMR BIPAR, Animal Health Laboratory, ANSES, INRA, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, Maisons-Alfort, France
| | - Marc Grandadam
- Institut Pasteur du Laos, Vientiane, Lao People's Democratic Republic
| | - Emmanuel Albina
- UMR ASTRE, CIRAD, INRA, Université de Montpellier, Montpellier, France
- CIRAD, UMR ASTRE, Petit-Bourg, Guadeloupe, France
| | - Philippe Dussart
- Virology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia
| | - Sara Moutailler
- UMR BIPAR, Animal Health Laboratory, ANSES, INRA, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, Maisons-Alfort, France
| | - Julien Cappelle
- UMR ASTRE, CIRAD, INRA, Université de Montpellier, Montpellier, France
- Epidemiology and Public Health Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia
- UMR EpiA, INRA, VetAgro Sup, Marcy l'Etoile, France
| | - Paul T Brey
- Institut Pasteur du Laos, Vientiane, Lao People's Democratic Republic
| | - Marc Eloit
- Institut Pasteur, Biology of Infection Unit, Inserm U1117, Pathogen Discovery Laboratory, Institut Pasteur, Paris, France
- National Veterinary School of Alfort, Paris-Est University, Maisons-Alfort, France
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14
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Tangena JAA, Marcombe S, Thammavong P, Chonephetsarath S, Somphong B, Sayteng K, Grandadam M, Sutherland IW, Lindsay SW, Brey PT. Bionomics and insecticide resistance of the arboviral vector Aedes albopictus in northern Lao PDR. PLoS One 2018; 13:e0206387. [PMID: 30359425 PMCID: PMC6201963 DOI: 10.1371/journal.pone.0206387] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 10/11/2018] [Indexed: 12/21/2022] Open
Abstract
In the last four decades there has been a staggering increase in the geographical range of the arboviral vector Aedes albopictus (Skuse, 1894). This species is now found in every continent except Antarctica, increasing the distribution of arboviral diseases such as dengue and chikungunya. In Lao PDR dengue epidemics occur regularly, with cases of chikungunya also reported. As treatment methods for arboviral diseases is limited, the control of the vector mosquitoes are essential. There is a paucity of information on the bionomics and resistance status of this mosquito for successful vector control efforts. Here we describe the bionomics and insecticide resistance status of Ae. albopictus in Laos to identify opportunities for control. Adult Ae. albopictus were collected using human-baited double bed net (HDN) traps in forests, villages and rubber plantations and tested for alpha- and flaviviruses with RT-PCR. Surveys were also conducted to identify larval habitats. Seven adult and larval populations originating from Vientiane Capital and Luang Prabang province were tested against DDT, malathion, permethrin, deltamethrin and, temephos following WHO protocols. Aedes albopictus were found throughout the year, but were six-fold greater in the rainy season than the dry season. Adult females were active for 24 hours, with peak of behaviour at 18.00 h. The secondary forest and rubber plantation samples showed evidence of Pan-flaviviruses, while samples from the villages did not. More than half of the emerged Ae. albopictus were collected from mature rubber plantations (53.9%; 1,533/2,845). Most Ae. albopictus mosquitoes emerged from latex collection cups (19.7%; 562/2,845), small water containers (19.7%; 562/2,845) and tyres (17.4%; 495/2,845). Adult mosquitoes were susceptible to pyrethroids, apart from one population in Vientiane city. All populations were resistant to DDT (between 27-90% mortality) and all except one were resistant to malathion (20-86%). Three of the seven larval populations were resistant to temephos (42-87%), with suspected resistance found in three other populations (92-98%).This study demonstrates that rural areas in northern Laos are potential hot spots for arboviral disease transmission. Multiple-insecticide resistance was found. Aedes albopictus control efforts in villages need to expand to include secondary forests and rubber plantations, with larval source management and limited use of insecticides.
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Affiliation(s)
- Julie-Anne A. Tangena
- Medical Entomology and Vector-Borne Disease Laboratory Institut Pasteur du Laos, Vientiane, Laos
| | - Sébastien Marcombe
- Medical Entomology and Vector-Borne Disease Laboratory Institut Pasteur du Laos, Vientiane, Laos
| | - Phoutmany Thammavong
- Medical Entomology and Vector-Borne Disease Laboratory Institut Pasteur du Laos, Vientiane, Laos
| | | | - Boudsady Somphong
- Medical Entomology and Vector-Borne Disease Laboratory Institut Pasteur du Laos, Vientiane, Laos
| | - Kouxiong Sayteng
- Arbovirology and Emerging Viruses Laboratory, Institut Pasteur du Laos, Vientiane, Laos
| | - Marc Grandadam
- Medical Entomology and Vector-Borne Disease Laboratory Institut Pasteur du Laos, Vientiane, Laos
| | - Ian W. Sutherland
- United States Naval Medical Research Center—Asia, PSA SEMBAWANG, Singapore
- United States Navy Entomology Center of Excellence, NAS Jacksonville, Florida, United States of America
| | - Steve W. Lindsay
- Department of Biosciences, Durham University, Durham, United Kingdom
| | - Paul T. Brey
- Medical Entomology and Vector-Borne Disease Laboratory Institut Pasteur du Laos, Vientiane, Laos
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15
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Taylor AJ, Vongphayloth K, Vongsouvath M, Grandadam M, Brey PT, Newton PN, Sutherland IW, Dittrich S. Large-Scale Survey for Tickborne Bacteria, Khammouan Province, Laos. Emerg Infect Dis 2018; 22:1635-9. [PMID: 27532491 PMCID: PMC4994350 DOI: 10.3201/eid2209.151969] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
We screened 768 tick pools containing 6,962 ticks from Khammouan Province, Laos, by using quantitative real-time PCR and identified Rickettsia spp., Ehrlichia spp., and Borrelia spp. Sequencing of Rickettsia spp.–positive and Borrelia spp.–positive pools provided evidence for distinct genotypes. Our results identified bacteria with human disease potential in ticks in Laos.
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16
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Hiscox A, Hirooka R, Vongphayloth K, Hill N, Lindsay SW, Grandadam M, Brey PT. Armigeres subalbatus colonization of damaged pit latrines: a nuisance and potential health risk to residents of resettlement villages in Laos. Med Vet Entomol 2016; 30:95-100. [PMID: 26508317 DOI: 10.1111/mve.12142] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 07/06/2015] [Accepted: 07/17/2015] [Indexed: 06/05/2023]
Abstract
During the resettlement of 6500 persons living around the Nam Theun 2 hydroelectric project in Laos, more than 1200 pour-flush latrines were constructed. To assess the role of these latrines as productive larval habitats for mosquitoes, entomological investigations using Centers for Disease Control (CDC) light traps, visual inspection and emergence trapping were carried out in over 300 latrines during the rainy seasons of 2008-2010. Armigeres subalbatus (Diptera: Culicidae) were nine times more likely to be found in latrines (mean catch: 3.09) than in adjacent bedrooms (mean catch: 0.37) [odds ratio (OR) 9.08, 95% confidence interval (CI) 6.74-15.11] and mosquitoes were active in and around 59% of latrines at dusk. Armigeres subalbatus was strongly associated with latrines with damaged or improperly sealed septic tank covers (OR 5.44, 95% CI 2.02-14.67; P < 0.001). Armigeres subalbatus is a nuisance biter and a putative vector of Japanese encephalitis and dengue viruses. Dengue virus serotype 3 was identified from a single pool of non-blood-fed female A. subalbatus using reverse transcription polymerase chain reaction. Maintaining a good seal around septic tanks by covering them with a layer of soil is a simple intervention to block mosquito exit/entry and contribute to vector control in resettlement villages. The scale-up of this simple, cheap intervention would have global impact in preventing the colonization of septic tanks by nuisance biting and disease-transmitting mosquitoes.
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Affiliation(s)
- A Hiscox
- Laboratory of Vector-Borne Diseases, Institut Pasteur du Laos, Vientiane, Laos
- Department of Disease Control, London School of Hygiene and Tropical Medicine, London, U.K
- Laboratory of Entomology, Wageningen University and Research Centre, Wageningen, the Netherlands
| | - R Hirooka
- Laboratory of Vector-Borne Diseases, Institut Pasteur du Laos, Vientiane, Laos
| | - K Vongphayloth
- Laboratory of Vector-Borne Diseases, Institut Pasteur du Laos, Vientiane, Laos
| | - N Hill
- Department of Disease Control, London School of Hygiene and Tropical Medicine, London, U.K
| | - S W Lindsay
- School of Biological and Biomedical Sciences, Durham University, Durham, U.K
| | - M Grandadam
- Laboratory of Arbovirology and Emerging Viruses, Institut Pasteur du Laos, Vientiane, Laos
| | - P T Brey
- Laboratory of Vector-Borne Diseases, Institut Pasteur du Laos, Vientiane, Laos
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17
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Lao M, Caro V, Thiberge JM, Bounmany P, Vongpayloth K, Buchy P, Duong V, Vanhlasy C, Hospied JM, Thongsna M, Choumlivong K, Vongkhamchanh P, Oudavong B, Brey PT, Grandadam M. Co-circulation of dengue virus type 3 genotypes in Vientiane capital, Lao PDR. PLoS One 2014; 9:e115569. [PMID: 25551768 PMCID: PMC4281081 DOI: 10.1371/journal.pone.0115569] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 10/24/2014] [Indexed: 11/19/2022] Open
Abstract
During the 2012 epidemic of dengue in Vientiane capital, Lao PDR, a major serotype switch from dengue 1 to 3 was observed. A molecular epidemiology study demonstrated that dengue 3 remained the predominant serotype in 2013, but also revealed the co-circulation of two genotypes, supporting the hypothesis of multiple geographic origins of dengue 3 strains circulating in Vientiane capital.
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Affiliation(s)
| | | | | | | | | | | | - Veasna Duong
- Institut Pasteur du Cambodge, Phnom Penh, Cambodia
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Demanou M, Pouillot R, Grandadam M, Boisier P, Kamgang B, Hervé JP, Rogier C, Rousset D, Paupy C. Evidence of dengue virus transmission and factors associated with the presence of anti-dengue virus antibodies in humans in three major towns in Cameroon. PLoS Negl Trop Dis 2014; 8:e2950. [PMID: 25009996 PMCID: PMC4091864 DOI: 10.1371/journal.pntd.0002950] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Accepted: 05/05/2014] [Indexed: 11/18/2022] Open
Abstract
Background Dengue is not well documented in Africa. In Cameroon, data are scarce, but dengue infection has been confirmed in humans. We conducted a study to document risk factors associated with anti-dengue virus Immunoglobulin G seropositivity in humans in three major towns in Cameroon. Methodology/Principal Findings A cross sectional survey was conducted in Douala, Garoua and Yaounde, using a random cluster sampling design. Participants underwent a standardized interview and were blood sampled. Environmental and housing characteristics were recorded. Randomized houses were prospected to record all water containers, and immature stages of Aedes mosquitoes were collected. Sera were screened for anti-dengue virus IgG and IgM antibodies. Risk factors of seropositivity were tested using logistic regression methods with random effects. Anti-dengue IgG were found from 61.4% of sera in Douala (n = 699), 24.2% in Garoua (n = 728) and 9.8% in Yaounde (n = 603). IgM were found from 0.3% of Douala samples, 0.1% of Garoua samples and 0.0% of Yaounde samples. Seroneutralization on randomly selected IgG positive sera showed that 72% (n = 100) in Douala, 80% (n = 94) in Garoua and 77% (n = 66) in Yaounde had antibodies specific for dengue virus serotype 2 (DENV-2). Age, temporary house walls materials, having water-storage containers, old tires or toilets in the yard, having no TV, having no air conditioning and having travelled at least once outside the city were independently associated with anti-dengue IgG positivity in Douala. Age, having uncovered water containers, having no TV, not being born in Garoua and not breeding pigs were significant risk factors in Garoua. Recent history of malaria, having banana trees and stagnant water in the yard were independent risk factors in Yaounde. Conclusion/Significance In this survey, most identified risk factors of dengue were related to housing conditions. Poverty and underdevelopment are central to the dengue epidemiology in Cameroon. General awareness of dengue fever in Africa, and particularly in Cameroon, is weak. Many acute febrile illnesses are considered as malaria, although not laboratory confirmed, and the diagnosis of dengue fever is seldom evoked while its laboratory confirmation is even more seldom obtained. On the basis of anti-dengue virus IgG seropositivity in humans, our survey demonstrated that dengue virus transmission occurred in the three main towns of the country. Although the findings varied according to the location, identified risk factors of anti-dengue virus seropositivity were commonly related to housing conditions. Taking into account the risk factors identified in Douala, practical ways to lower the risk of dengue virus transmission are long term development and improvement of sanitation and education. We concluded that poverty and underdevelopment are central to the problem of dengue virus transmission in urban areas in Cameroon.
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Affiliation(s)
- Maurice Demanou
- Virology Department, Centre Pasteur Cameroon, Member of the International Network of Pasteur Institutes (RIIP), Yaounde, Cameroon
- * E-mail:
| | - Régis Pouillot
- Epidemiology Department, Centre Pasteur Cameroon, Member of the International Network of Pasteur Institutes (RIIP), Yaounde, Cameroon
| | - Marc Grandadam
- Institut Pasteur du Laos, Laboratoire des Arbovirus et Maladies Virales Émergentes, Vientiane, Lao PDR
| | - Pascal Boisier
- Epidemiology Department, Centre Pasteur Cameroon, Member of the International Network of Pasteur Institutes (RIIP), Yaounde, Cameroon
| | - Basile Kamgang
- Institut Pasteur de Bangui, Bangui, Central African Republic
| | | | | | - Dominique Rousset
- Virology Department, Centre Pasteur Cameroon, Member of the International Network of Pasteur Institutes (RIIP), Yaounde, Cameroon
- Institut Pasteur de La Guyane, Laboratoire de Virologie, Cayenne, French Guiana
| | - Christophe Paupy
- UMR MIVEGEC (IRD 224 - CNRS 5290 - UM1 – UM2), Institut de Recherche pour le Développement, Montpellier, France
- Equipe Ecologie des Systèmes Vectoriels, Centre International de Recherches Médicales de Franceville, Franceville, Gabon
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19
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Peyrefitte CN, Grandadam M, Bessaud M, Andry PE, Fouque F, Caro V, Diancourt L, Schuffenecker I, Pagès F, Tolou H, Zeller H, Depaquit J. Diversity of Phlebotomus perniciosus in Provence, Southeastern France: Detection of Two Putative New Phlebovirus Sequences. Vector Borne Zoonotic Dis 2013; 13:630-6. [DOI: 10.1089/vbz.2012.1169] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - Marc Grandadam
- Institut de Recherche Biomédicale des Armées antenne de Marseille, Marseille, France
| | - Maël Bessaud
- UMR190 “Emergence des Pathologies Virales," Aix-Marseille University–IRD French Institute of Research for Development–EHESP French School of Public Health, Marseille, France
| | - Pierre-Emmanuel Andry
- Université de Reims Champagne-Ardenne, ANSES, EA4688 “Transmission vectorielle et épidémiosurveillance de maladies parasitaires (VECPAR),” Reims, France
| | | | | | | | | | - Frédéric Pagès
- Institut de Recherche Biomédicale des Armées antenne de Marseille, Marseille, France
| | - Hugues Tolou
- Institut de Recherche Biomédicale des Armées, Brétigny sur Orge, France
| | | | - Jérôme Depaquit
- Université de Reims Champagne-Ardenne, ANSES, EA4688 “Transmission vectorielle et épidémiosurveillance de maladies parasitaires (VECPAR),” Reims, France
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20
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Joffret ML, Bouchier C, Grandadam M, Zeller H, Maufrais C, Bourhy H, Despres P, Delpeyroux F, Dacheux L. Genomic characterization of Sebokele virus 1 (SEBV1) reveals a new candidate species among the genus Parechovirus. J Gen Virol 2013; 94:1547-1553. [DOI: 10.1099/vir.0.053157-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
We determined the genomic features and the taxonomic classification of Sebokele virus 1 (SEBV1), a previously unclassified arbovirus isolated in 1972 from rodents collected in Botambi, Central African Republic. The complete genome sequence was obtained using a deep sequencing approach (Illumina technology) and dedicated bioinformatics workflows for data analysis. Molecular analysis identified SEBV1 as a picornavirus, most closely related to Ljungan viruses of the genus Parechovirus. The genome has a typical Ljungan virus-like organization, including the presence of two unrelated 2A protein motifs. Phylogenetic analysis confirmed that SEBV1 belongs to the parechovirus phylogroup and was most closely related to the Ljungan virus species. However, it appeared clearly distinct from all members of this phylogroup, suggesting that it represents a novel species of the genus Parechovirus.
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Affiliation(s)
- M. L. Joffret
- INSERM, U994, Paris, France
- Institut Pasteur, Unité de Biologie des Virus Entériques, Paris, France
| | - C. Bouchier
- Institut Pasteur, Plate-forme Génomique, Paris, France
| | - M. Grandadam
- Institut Pasteur, Centre National de Reference des Arbovirus, Unité des Interactions Moléculaires Flavivirus-Hôtes, Paris, France
| | - H. Zeller
- Institut Pasteur, Unité de Biologie des Infections Emergentes, Lyon, France
| | - C. Maufrais
- Institut Pasteur, Centre d’Informatique pour les Biologistes, Paris, France
| | - H. Bourhy
- Institut Pasteur, Unité de Dynamique des Lyssavirus et Adaptation à l’Hôte, Paris, France
| | - P. Despres
- Institut Pasteur, Unité des Interactions Moléculaires Flavivirus-Hôtes, Paris, France
| | - F. Delpeyroux
- INSERM, U994, Paris, France
- Institut Pasteur, Unité de Biologie des Virus Entériques, Paris, France
| | - L. Dacheux
- Institut Pasteur, Unité de Dynamique des Lyssavirus et Adaptation à l’Hôte, Paris, France
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21
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Vega-Rua A, Zouache K, Caro V, Diancourt L, Delaunay P, Grandadam M, Failloux AB. High efficiency of temperate Aedes albopictus to transmit chikungunya and dengue viruses in the Southeast of France. PLoS One 2013; 8:e59716. [PMID: 23527259 PMCID: PMC3601061 DOI: 10.1371/journal.pone.0059716] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 02/17/2013] [Indexed: 12/23/2022] Open
Abstract
Background Since 2005, cases of chikungunya (CHIK) were caused by an unusual vector, Aedes albopictus. This mosquito, present in Europe since 1979, has gained importance since its involvement in the first CHIK outbreak in Italy in 2007. The species is capable of transmitting experimentally 26 arboviruses. However, the vectorial status of its temperate populations has remained little investigated. In 2010, autochthonous cases of CHIK and dengue (DEN) were reported in southeastern France. We evaluated the potential of a French population of Ae. albopictus in the transmission of both viruses. Methodology and Principal Findings We used two strains of each virus, CHIK and DEN: one strain was isolated from an imported case, and one from an autochthonous case. We used as controls Aedes aegypti from India and Martinique, the source of the imported cases of CHIK and DEN, respectively. We showed that Ae. albopictus from Cagnes-sur-Mer (AL-CSM) was as efficient as the typical tropical vector Ae. aegypti from India to experimentally transmit both CHIK strains isolated from patients in Fréjus, with around 35–67% of mosquitoes delivering up to 14 viral particles at day 3 post-infection (pi). The unexpected finding came from the high efficiency of AL-CSM to transmit both strains of DENV-1 isolated from patients in Nice. Almost 67% of Ae. albopictus AL-CSM which have ensured viral dissemination were able to transmit at day 9 pi when less than 21% of the typical DEN vector Ae. aegypti from Martinique could achieve transmission. Conclusions/Significance Temperate Ae. albopictus behaves differently compared to its counterpart from tropical regions, where recurrent epidemic outbreaks occur. Its potential responsibility for outbreaks in Europe should not be minimized.
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Affiliation(s)
- Anubis Vega-Rua
- Department of Virology, Institut Pasteur, Arboviruses and Insect Vectors, Paris, France
| | - Karima Zouache
- Department of Virology, Institut Pasteur, Arboviruses and Insect Vectors, Paris, France
| | - Valerie Caro
- Department of Infection and Epidemiology, Institut Pasteur, Genotyping of Pathogens and Public Health, Paris, France
| | - Laure Diancourt
- Department of Infection and Epidemiology, Institut Pasteur, Genotyping of Pathogens and Public Health, Paris, France
| | - Pascal Delaunay
- Hôpital de l’Archet, Centre Hospitalier Universitaire de Nice, and Inserm U1065/Université de Nice-Sophia Antipolis, Laboratoire de Parasitologie–Mycologie, Nice, France
| | - Marc Grandadam
- Department of Virology, Institut Pasteur, Molecular Interactions Flavivirus-Hosts, National Reference Center for Arboviruses, Paris, France
| | - Anna-Bella Failloux
- Department of Virology, Institut Pasteur, Arboviruses and Insect Vectors, Paris, France
- * E-mail:
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22
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Vazeille M, Yébakima A, Lourenço-de-Oliveira R, Andriamahefazafy B, Correira A, Rodrigues JM, Veiga A, Moreira A, Leparc-Goffart I, Grandadam M, Failloux AB. Oral receptivity of Aedes aegypti from Cape Verde for yellow fever, dengue, and chikungunya viruses. Vector Borne Zoonotic Dis 2012. [PMID: 23199267 DOI: 10.1089/vbz.2012.0982] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
At the end of 2009, 21,313 cases of dengue-3 virus (DENV-3) were reported in the islands of Cape Verde, an archipelago located in the Atlantic Ocean 570 km from the coast of western Africa. It was the first dengue outbreak ever reported in Cape Verde. Mosquitoes collected in July 2010 in the city of Praia, on the island of Santiago, were identified morphologically as Aedes aegypti formosus. Using experimental oral infections, we found that this vector showed a moderate ability to transmit the epidemic dengue-3 virus, but was highly susceptible to chikungunya and yellow fever viruses.
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Affiliation(s)
- Marie Vazeille
- Institut Pasteur, Department of Virology, Arboviruses and Insect Vectors Laboratory, Paris, France.
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23
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Dupont-Rouzeyrol M, Caro V, Guillaumot L, Vazeille M, D'Ortenzio E, Thiberge JM, Baroux N, Gourinat AC, Grandadam M, Failloux AB. Chikungunya virus and the mosquito vector Aedes aegypti in New Caledonia (South Pacific Region). Vector Borne Zoonotic Dis 2012; 12:1036-41. [PMID: 23167500 DOI: 10.1089/vbz.2011.0937] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Chikungunya virus (CHIKV) is transmitted to humans through the bite of Aedes mosquitoes. During the 2005-2006 epidemic that occurred in the Indian Ocean Islands, a viral strain harboring a substitution of an alanine to valine at position 226 (E1-A226V) of the E1 glycoprotein enhanced the transmissibility of CHIKV by Aedes albopictus. In March 2011, autochthonous transmission of CHIKV was reported in New Caledonia (NC), an island located in the southwest Pacific Ocean. This was the first report of local chikungunya (CHIK) transmission in this region of the world. Phylogenetic analysis based on the complete genome demonstrated that the CHIKV-NC strain isolated from the first autochthonous human case belongs to the Asian lineage. This is consistent with the Indonesian origin of CHIK cases previously imported and detected. Thus the CHIKV-NC does not present a valine substitution at position E1-226. In New Caledonia, the putative vector of CHIKV is Aedes aegypti, since no other potential vector has ever been described. For example, A. albopictus is not found in NC. Vector competence experiments showed that A. aegypti from New Caledonia was able to transmit, as early as 3 days post-infection, two CHIKV strains: CHIKV-NC belonging to the Asian lineage, and CHIKV-RE from Reunion Island harboring the E1-A226V mutation. Thus the extrinsic incubation period of both CHIKV strains in this vector species could be considered to be quite short. These results illustrate the threat of the spread of CHIKV in the South Pacific region. From February to June 2011 (the end of the alert), only 33 cases were detected. Implementation of drastic vector control measures and the occurrence of the cold season probably helped to limit the extent of the outbreak, but other factors may have also been involved and are discussed.
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Affiliation(s)
- Myrielle Dupont-Rouzeyrol
- Institut Pasteur de Nouvelle-Calédonie , Réseau International des Instituts Pasteur, Laboratoire d'Epidémiologie Moléculaire, Nouméa, New Caledonia.
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24
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Cêtre-Sossah C, Zeller H, Grandadam M, Caro V, Pettinelli F, Bouloy M, Cardinale E, Albina E. Genome analysis of Rift Valley fever virus, Mayotte. Emerg Infect Dis 2012; 18:969-71. [PMID: 22608405 PMCID: PMC3358145 DOI: 10.3201/eid1806.110994] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
As further confirmation of a first human case of Rift Valley fever in 2007 in Comoros, we isolated Rift Valley fever virus in suspected human cases. These viruses are genetically closely linked to the 2006–2007 isolates from Kenya.
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Affiliation(s)
- Catherine Cêtre-Sossah
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Montpellier, France.
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25
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Couderc T, Gangneux N, Chretien F, Caro V, Le Luong T, Ducloux B, Tolou H, Lecuit M, Grandadam M. Chikungunya Virus Infection of Corneal Grafts. J Infect Dis 2012; 206:851-9. [DOI: 10.1093/infdis/jis296] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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26
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Li Y, Counor D, Lu P, Liang G, Vu T, Phan T, Huynh T, Sun G, Grandadam M, Butrapet S, Lavergne J, Flamand M, Yu Y, Solomon T, Buchy P, Deubel V. A specific and sensitive antigen capture assay for NS1 protein quantitation in Japanese encephalitis virus infection. J Virol Methods 2012; 179:8-16. [DOI: 10.1016/j.jviromet.2011.06.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2011] [Revised: 06/04/2011] [Accepted: 06/08/2011] [Indexed: 11/30/2022]
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Grandadam M, Caro V, Plumet S, Thiberge JM, Souarès Y, Failloux AB, Tolou HJ, Budelot M, Cosserat D, Leparc-Goffart I, Desprès P. Chikungunya virus, southeastern France. Emerg Infect Dis 2011; 17:910-3. [PMID: 21529410 PMCID: PMC3321794 DOI: 10.3201/eid1705.101873] [Citation(s) in RCA: 347] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
In September 2010, autochthonous transmission of chikungunya virus was recorded in southeastern France, where the Aedes albopictus mosquito vector is present. Sequence analysis of the viral genomes of imported and autochthonous isolates indicated new features for the potential emergence and spread of the virus in Europe.
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D’Ortenzio E, Grandadam M, Balleydier E, Jaffar-Bandjee MC, Michault A, Brottet E, Baville M, Filleul L. A226V strains of Chikungunya virus, Réunion Island, 2010. Emerg Infect Dis 2011; 17:309-11. [PMID: 21291616 PMCID: PMC3204771 DOI: 10.3201/eid1702.101056] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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29
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Domingo C, Niedrig M, Gascón J, Palacios G, Reyes N, Malo MJ, Wichmann O, Ruiz J, Schultze D, Schunk M, Puente S, Vinner L, Van Esbroeck M, Schuffenecker I, Grandadam M, López-Vélez R, Tenorio A. Molecular surveillance of circulating dengue genotypes through European travelers. J Travel Med 2011; 18:183-90. [PMID: 21539658 DOI: 10.1111/j.1708-8305.2011.00501.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Dengue viruses (DENV) are the most widespread arthropod-borne viruses, which have shown an unexpected geographic expansion, as well as an increase in number and severity of outbreaks in the last decades. Although the emergence of dengue is considered to be due to a number of complex factors, epidemiological studies have shown that some strains of dengue might be associated with increased severity and higher transmission rates than others. In this context, surveillance and identification of the appearance or introduction of more virulent strains, along with fluctuation of DENV among endemic areas are now considered essential public health activities. METHODS Samples from travelers returning from the tropics with acute dengue infections were analyzed to obtain up-dated information on circulating dengue strains. A short nucleotide fragment located in the carboxyl terminus of the dengue E gene was used for the characterization of DENV strains and the identification of their sero- and genotype. RESULTS One hundred eighty-six new dengue strains have been classified into 12 distinct genotype groups within the four dengue serotypes. The identification of the emergence of different sero- and genotypes, the appearance of new clades correlating with outbreaks, and the identification of a dengue-4 genotype not previously reported have been achieved. Interestingly, African strains characterized in this study have provided valuable data on dengue circulation on the continent. CONCLUSIONS This work demonstrates the convenience of routine application of molecular epidemiology analyses in dengue diagnosis laboratories. The use of molecular epidemiology tools on the analysis of imported dengue infections strengthens data acquisition on dengue strain movements correlating with epidemiological changes. The importance of surveillance of imported diseases contributing data for the epidemiological knowledge of infectious diseases in endemic areas has been once more demonstrated.
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Affiliation(s)
- Cristina Domingo
- Diagnostic Microbiology, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain.
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30
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Affiliation(s)
- Marc Grandadam
- CNR des arbovirus, Institut Pasteur, 25, rue du Docteur Roux75724 Paris Cedex 15France
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31
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Magnaval JF, Tolou H, Gibert M, Innokentiev V, Laborde M, Melnichuk O, Grandadam M, Crubézy E, Alekseev A. Seroepidemiology of Nine Zoonoses in Viljujsk, Republic of Sakha (Northeastern Siberia, Russian Federation). Vector Borne Zoonotic Dis 2011; 11:157-60. [DOI: 10.1089/vbz.2009.0105] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Jean-François Magnaval
- Department of Parasitology, Toulouse University Hospitals, Toulouse, France
- CNRS FRE 2960 Anthropobiology, Paul-Sabatier University, Toulouse, France
| | - Hugues Tolou
- Laboratory of Tropical Virology, IMTSSA Le Pharo, Marseilles, France
| | - Morgane Gibert
- CNRS FRE 2960 Anthropobiology, Paul-Sabatier University, Toulouse, France
| | | | - Mylène Laborde
- Department of Parasitology, Toulouse University Hospitals, Toulouse, France
| | - Olga Melnichuk
- Department of Foreign Languages, Yakutsk State University, Yakutsk, Republic of Sakha
| | - Marc Grandadam
- Laboratory of Tropical Virology, IMTSSA Le Pharo, Marseilles, France
- National Reference Center for Arboviruses, Institut Pasteur, Paris, France
| | - Eric Crubézy
- CNRS FRE 2960 Anthropobiology, Paul-Sabatier University, Toulouse, France
| | - Anatoly Alekseev
- Institute of Archeology and Ethnography, Yakutsk State University, Yakutsk, Republic of Sakha
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32
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Warter L, Lee CY, Thiagarajan R, Grandadam M, Lebecque S, Lin RTP, Bertin-Maghit S, Ng LFP, Abastado JP, Desprès P, Wang CI, Nardin A. Chikungunya virus envelope-specific human monoclonal antibodies with broad neutralization potency. J Immunol 2011; 186:3258-64. [PMID: 21278338 DOI: 10.4049/jimmunol.1003139] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Chikungunya virus (CHIKV) is an alphavirus responsible for numerous epidemics in Africa and Asia. Infection by CHIKV is often characterized by long-lasting, incapacitating arthritis, and some fatal cases have been described among elderly and newborns. Currently, there is no available vaccine or specific treatment against CHIKV. Blood B cells from a donor with history of CHIKV infection were activated, immortalized, amplified, and cloned. Two human mAbs against CHIKV, 5F10 and 8B10, were identified, sequenced, and expressed in recombinant form for characterization. In a plaque reduction neutralization test, 5F10 and 8B10 show mean IC(50) of 72 and 46 ng/ml, respectively. Moreover, both mAbs lead to a strong decrease in extracellular spreading of infectious viral particles from infected to uninfected cells. Importantly, the mAbs neutralize different CHIKV isolates from Singapore, Africa, and Indonesia, as well as O'nyong-nyong virus, but do not recognize other alphaviruses tested. Both mAbs are specific for the CHIKV envelope: 5F10 binds to the E2 glycoprotein ectodomain and 8B10 to E1 and/or E2. In conclusion, these two unique human mAbs strongly, broadly, and specifically neutralize CHIKV infection in vitro and might become possible therapeutic tools against CHIKV infection, especially in individuals at risk for severe disease. Importantly, these mAbs will also represent precious tools for future studies on host-pathogen interactions and the rational design of vaccines against CHIKV.
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Affiliation(s)
- Lucile Warter
- Singapore Immunology Network, Agency for Science, Technology and Research, Singapore.
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33
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La Ruche G, Souarès Y, Armengaud A, Peloux-Petiot F, Delaunay P, Desprès P, Lenglet A, Jourdain F, Leparc-Goffart I, Charlet F, Ollier L, Mantey K, Mollet T, Fournier JP, Torrents R, Leitmeyer K, Hilairet P, Zeller H, Van Bortel W, Dejour-Salamanca D, Grandadam M, Gastellu-Etchegorry M. First two autochthonous dengue virus infections in metropolitan France, September 2010. Euro Surveill 2010; 15:19676. [PMID: 20929659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
In September 2010, two cases of autochthonous dengue fever were diagnosed in metropolitan France for the first time. The cases occurring in Nice, southeast France, where Aedes albopictus is established, are evidence of dengue virus circulation in this area. This local transmission of dengue calls for further enhanced surveillance, active case finding and vector control measures to reduce the spread of the virus and the risk of an epidemic.
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Affiliation(s)
- G La Ruche
- French Institute for Public Health Surveillance (Institut de Veille Sanitaire, InVS), Saint-Maurice, France.
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La Ruche G, Souarès Y, Armengaud A, Peloux-Petiot F, Delaunay P, Desprès P, Lenglet A, Jourdain F, Leparc-Goffart I, Charlet F, Ollier L, Mantey K, Mollet T, Fournier JP, Torrents R, Leitmeyer K, Hilairet P, Zeller H, Van Bortel W, Dejour-Salamanca D, Grandadam M, Gastellu-Etchegorry M. First two autochthonous dengue virus infections in metropolitan France, September 2010. Euro Surveill 2010. [DOI: 10.2807/ese.15.39.19676-en] [Citation(s) in RCA: 271] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In September 2010, two cases of autochthonous dengue fever were diagnosed in metropolitan France for the first time. The cases occurring in Nice, south-east France, where Aedes albopictus is established, are evidence of dengue virus circulation in this area. This local transmission of dengue calls for further enhanced surveillance, active case finding and vector control measures to reduce the spread of the virus and the risk of an epidemic.
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Affiliation(s)
- G La Ruche
- French Institute for Public Health Surveillance (Institut de Veille Sanitaire, InVS), Saint-Maurice, France
| | - Y Souarès
- French Institute for Public Health Surveillance (Institut de Veille Sanitaire, InVS), Saint-Maurice, France
| | - A Armengaud
- Regional office of the French Institute for Public Health Surveillance (Cire Sud), Marseille, France
| | - F Peloux-Petiot
- Regional Health Agency of Provence-Alpes-Côte d’Azur, Marseille and Nice, France
| | - P Delaunay
- Entomology-Parasitology, Virology and Emergency Medicine and Internal Medicine Departments, University Hospital of Nice, Nice, France
| | - P Desprès
- Institut Pasteur, National Reference Centre for arboviruses, Paris, France
| | - A Lenglet
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | - F Jourdain
- Directorate General for Health, Ministry of Health, Paris, France
| | - I Leparc-Goffart
- Institut de recherche biomédicale des armées, National Reference Centre for arboviruses associated laboratory, Marseille, France
| | - F Charlet
- Regional Health Agency of Provence-Alpes-Côte d’Azur, Marseille and Nice, France
| | - L Ollier
- Entomology-Parasitology, Virology and Emergency Medicine and Internal Medicine Departments, University Hospital of Nice, Nice, France
| | - K Mantey
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | - T Mollet
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | - J P Fournier
- Entomology-Parasitology, Virology and Emergency Medicine and Internal Medicine Departments, University Hospital of Nice, Nice, France
| | - R Torrents
- Regional office of the French Institute for Public Health Surveillance (Cire Sud), Marseille, France
| | - K Leitmeyer
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | - P Hilairet
- Entomology-Parasitology, Virology and Emergency Medicine and Internal Medicine Departments, University Hospital of Nice, Nice, France
| | - H Zeller
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | - W Van Bortel
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | - D Dejour-Salamanca
- French Institute for Public Health Surveillance (Institut de Veille Sanitaire, InVS), Saint-Maurice, France
| | - M Grandadam
- Institut Pasteur, National Reference Centre for arboviruses, Paris, France
| | - M Gastellu-Etchegorry
- French Institute for Public Health Surveillance (Institut de Veille Sanitaire, InVS), Saint-Maurice, France
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35
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Receveur MC, Grandadam M, Pistone T, Malvy D. Infection with Mayaro virus in a French traveller returning from the Amazon region, Brazil, January, 2010. Euro Surveill 2010; 15:19563. [PMID: 20460093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023] Open
Abstract
Mayaro virus (MAYV) disease is a mosquito-borne zoonosis endemic in humid forests of tropical South America. MAYV is closely related to other alphaviruses that produce a dengue-like illness accompanied by long-lasting arthralgia. A French tourist developed high-grade fever and severe joint manifestations following a 15-day trip in the Amazon basin, Brazil, and was diagnosed with MAYV infection in January 2010. This case is the first reported in a traveller returning from an endemic South American country to Europe.
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Affiliation(s)
- M C Receveur
- Travel clinics and Division of Tropical Medicine and Imported Diseases, Department of Internal Medicine and Tropical Diseases, Hopital St-Andre, University Hospital Centre, Bordeaux, France
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36
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Receveur MC, Grandadam M, Pistone T, Malvy D. Infection with Mayaro virus in a French traveller returning from the Amazon region, Brazil, January, 2010. Euro Surveill 2010. [DOI: 10.2807/ese.15.18.19563-en] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Mayaro virus (MAYV) disease is a mosquito-borne zoonosis endemic in humid forests of tropical South America. MAYV is closely related to other alphaviruses that produce a dengue-like illness accompanied by long-lasting arthralgia. A French tourist developed high-grade fever and severe joint manifestations following a 15-day trip in the Amazon basin, Brazil, and was diagnosed with MAYV infection in January 2010. This case is the first reported in a traveller returning from an endemic South American country to Europe.
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Affiliation(s)
- M C Receveur
- Travel clinics and Division of Tropical Medicine and Imported Diseases, Department of Internal Medicine and Tropical Diseases, Hôpital St-André, University Hospital Centre, Bordeaux, France
| | - M Grandadam
- Centre national de référence des arbovirus, Institut Pasteur, Paris, France
| | - T Pistone
- Travel clinics and Division of Tropical Medicine and Imported Diseases, Department of Internal Medicine and Tropical Diseases, Hôpital St-André, University Hospital Centre, Bordeaux, France
| | - D Malvy
- Travel clinics and Division of Tropical Medicine and Imported Diseases, Department of Internal Medicine and Tropical Diseases, Hôpital St-André, University Hospital Centre, Bordeaux, France
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37
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Hoarau JJ, Jaffar Bandjee MC, Krejbich Trotot P, Das T, Li-Pat-Yuen G, Dassa B, Denizot M, Guichard E, Ribera A, Henni T, Tallet F, Moiton MP, Gauzère BA, Bruniquet S, Jaffar Bandjee Z, Morbidelli P, Martigny G, Jolivet M, Gay F, Grandadam M, Tolou H, Vieillard V, Debré P, Autran B, Gasque P. Persistent chronic inflammation and infection by Chikungunya arthritogenic alphavirus in spite of a robust host immune response. J Immunol 2010; 184:5914-27. [PMID: 20404278 DOI: 10.4049/jimmunol.0900255] [Citation(s) in RCA: 399] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Alphaviruses, including Chikungunya virus (CHIKV), produce a transient illness in humans, but severe forms leading to chronic incapacitating arthralgia/arthritis have been reported by mechanisms largely ill-characterized. The pathogenesis of CHIKV was addressed in a prospective cohort study of 49 hospitalized patients from Reunion Island subsequently categorized into two distinct groups at 12 mo postinfection. Comprehensive analyses of the clinical and immunological parameters throughout the disease course were analyzed in either the "recovered" or the "chronic" groups to identify prognostic markers of arthritis-like pathology after CHIKV disease. We found that the chronic group consisted mainly of more elderly patients (>60 y) and with much higher viral loads (up to 10(10) viruses per milliliter of blood) during the acute phase. Remarkably, a rapid innate immune antiviral response was demonstrated by robust dendritic/NK/CD4/CD8 cell activation and accompanied by a rather weak Th1/Th2 cytokine response in both groups. Interestingly, the antiviral immune response witnessed by high levels of IFN-alpha mRNA in PBMCs and circulating IL-12 persisted for months only in the chronic group. CHIKV (RNA and proteins) was found in perivascular synovial macrophages in one chronic patient 18 mo postinfection surrounded by infiltrating NK and T cells (CD4(++) but rare cytotoxic CD8). Fibroblast hyperplasia, strong angiogenesis, tissue lesions given the high levels of matrix metalloproteinase 2, and acute cell death [high cleaved poly(ADP-ribose) polymerase staining] were observed in the injured synovial tissue. These observed cellular and molecular events may contribute to chronic arthralgia/arthritis targeted by methotrexate used empirically for effective treatment but with immunosuppressive function in a context of viral persistence.
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Affiliation(s)
- Jean-Jacques Hoarau
- Biology Unit, Centre Hospitalier Régional Nord Félix-Guyon and Cyclotron Réunion Océan Indien, Université de la Réunion, St. Denis, France
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Abstract
Phlebotomine sandflies are known to transmit leishmaniases, bacteria and viruses that affect humans and animals in many countries worldwide. These sandfly-borne viruses are mainly the Phlebovirus, the Vesiculovirus and the Orbivirus. Some of these viruses are associated with outbreaks or human cases in the Mediterranean Europe. In this paper, the viruses transmitted by Phlebotomine sandflies in Europe (Toscana virus, Sicilian virus, sandfly fever Naples virus) are reviewed and their medical importance, geographical distribution, epidemiology and potential spreading discussed. Data on vertebrate reservoirs is sparse for sandfly fever viruses. The factor currently known to limit the spread of diseases is mainly the distribution areas of potential vectors. The distribution areas of the disease may not be restricted to the areas where they have been recorded but could be as wide as those of their vectors, that is to say Larroussius and P. papatasi mainly but not exclusively. Consequently, field work in form of viral isolation from sandflies and possible reservoirs as well as laboratory work to establish vectorial competence of colonised sandflies need to be encouraged in a near future, and epidemiological surveillance should be undertaken throughout the European Union.
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Affiliation(s)
- J Depaquit
- Université de Reims Champagne Ardenne, AFSSA, JE 2533-USC “VECPAR”, Reims, France
| | - M Grandadam
- Centre national de référence des arbovirus, Institut Pasteur, Paris, France
- Laboratoire associé au Centre national de référence des arbovirus, Unité de virologie tropicale, Institut de médecine tropicale du Service de santé des armées, Marseille, France
| | - F Fouque
- Cellule d'Intervention Biologique d'Urgence (CIBU), Institut Pasteur, Paris, France
| | - PE Andry
- Université de Reims Champagne Ardenne, AFSSA, JE 2533-USC “VECPAR”, Reims, France
| | - C Peyrefitte
- Unité de virologie, Département de Biologie des Agents transmissibles, Centre de Recherche du Service de Santé des Armées, Grenoble, France
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39
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Depaquit J, Grandadam M, Fouque F, Andry PE, Peyrefitte C. Arthropod-borne viruses transmitted by Phlebotomine sandflies in Europe: a review. Euro Surveill 2010; 15:19507. [PMID: 20403307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023] Open
Abstract
Phlebotomine sandflies are known to transmit leishmaniases, bacteria and viruses that affect humans and animals in many countries worldwide. These sandfly-borne viruses are mainly the Phlebovirus, the Vesiculovirus and the Orbivirus. Some of these viruses are associated with outbreaks or human cases in the Mediterranean Europe. In this paper, the viruses transmitted by Phlebotomine sandflies in Europe (Toscana virus, Sicilian virus, sandfly fever Naples virus) are reviewed and their medical importance, geographical distribution, epidemiology and potential spreading discussed. Data on vertebrate reservoirs is sparse for sandfly fever viruses. The factor currently known to limit the spread of diseases is mainly the distribution areas of potential vectors. The distribution areas of the disease may not be restricted to the areas where they have been recorded but could be as wide as those of their vectors, that is to say Larroussius and P. papatasi mainly but not exclusively. Consequently, field work in form of viral isolation from sandflies and possible reservoirs as well as laboratory work to establish vectorial competence of colonised sandflies need to be encouraged in a near future, and epidemiological surveillance should be undertaken throughout the European Union.
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Affiliation(s)
- J Depaquit
- Université de Reims Champagne Ardenne, AFSSA, JE 2533-USC VECPAR , Reims, France.
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40
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D'Ortenzio E, Grandadam M, Balleydier E, Dehecq JS, Jaffar-Bandjee MC, Michault A, Andriamandimby SF, Reynes JM, Filleul L. Sporadic cases of chikungunya, Réunion Island, August 2009. Euro Surveill 2009; 14:19324. [PMID: 19728980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
Abstract
On 28 August 2009, French authorities reported five cases of chikungunya fever on Reunion Island: three confirmed, one probable, and one suspected case under investigation. All three confirmed patients presented with an acute febrile syndrome, arthralgia, myalgia and cutaneaous rash. All live in the same area on the western side of the island.
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41
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D’Ortenzio E, Grandadam M, Balleydier E, Dehecq JS, Jaffar-Bandjee MC, Michault A, Andriamandimby SF, Reynes JM, Filleul L. Sporadic cases of chikungunya, Réunion Island, August 2009. Euro Surveill 2009. [DOI: 10.2807/ese.14.35.19324-en] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
On 28 August 2009, French authorities reported five cases of chikungunya fever on Réunion Island: three confirmed, one probable, and one suspected case under investigation. All three confirmed patients presented with an acute febrile syndrome, arthralgia, myalgia and cutaneaous rash. All live in the same area on the western side of the island.
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Affiliation(s)
- E D’Ortenzio
- Regional office of the French Institute for Public Health Surveillance, Institut de Veille Sanitaire, Réunion, France
| | - M Grandadam
- National Reference Centre for Arboviruses, World Health Organization Collaborating Centre for Arboviruses, Institut Pasteur, Paris, France
| | - E Balleydier
- Regional office of the French Institute for Public Health Surveillance, Institut de Veille Sanitaire, Réunion, France
| | - J S Dehecq
- Vector control team, Regional office for sanitary and social services (DRASS), Réunion, France
| | - M C Jaffar-Bandjee
- Microbiology Laboratory, Regional Hospital Centre of Saint-Denis, Réunion, France
| | - A Michault
- Laboratory for Bacteriology, Parasitology, Virology and Hospital Hygiene, Regional Hospital Centre of Saint-Pierre, Réunion, France
| | | | - J M Reynes
- Virology Unit, Institut Pasteur, Antananarivo, Madagscar
| | - L Filleul
- Regional office of the French Institute for Public Health Surveillance, Institut de Veille Sanitaire, Réunion, France
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42
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Couderc T, Khandoudi N, Grandadam M, Visse C, Gangneux N, Bagot S, Prost JF, Lecuit M. Prophylaxis and therapy for Chikungunya virus infection. J Infect Dis 2009; 200:516-23. [PMID: 19572805 PMCID: PMC7109959 DOI: 10.1086/600381] [Citation(s) in RCA: 174] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BackgroundChikungunya virus (CHIKV) is a recently reemerged arbovirus responsible for a massive outbreak of infection in the Indian Ocean region and India that has a very significant potential to spread globally because of the worldwide distribution of its mosquito vectors. CHIKV induces a usually self-limited disease in humans that is characterized by fever, arthralgia, myalgia, and rash; however, cases of severe CHIKV infection have recently been described, particularly in adults with underlying condition and neonates born to viremic mothers MethodsHuman polyvalent immunoglobulins were purified from plasma samples obtained from donors in the convalescent phase of CHIKV infection, and the preventive and curative effects of these immunoglobulins were investigated in 2 mouse models of CHIKV infection that we developed ResultsCHIKV immunoglobulins contain anti-CHIKV antibodies and exhibit a high in vitro neutralizing activity and a powerful prophylactic and therapeutic efficacy against CHIKV infection in vivo, including in the neonate ConclusionsAdministration of CHIKV immunoglobulins may constitute a safe and efficacious prevention strategy and treatment for individuals exposed to CHIKV who are at risk of severe infection, such as neonates born to viremic mothers and adults with underlying conditions. These results provide a proof-of-concept for purifying human immunoglobulins from plasma samples from patients in the convalescent phase of an emerging infectious disease for which neither prevention nor treatment is available
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Affiliation(s)
- Thérèse Couderc
- Groupe Microorganismes et Barrières de l'Hôte and Unité Interactions Moléculaires Flavivirus-Hôtes, Centre National de Référence des Arbovirus, Institut Pasteur, Inserm, Avenir U604, and Université Paris Descartes, Hôpital Necker-Enfants Malades, Paris, France
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43
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Charlier C, Enouf V, Lanternier F, Grandadam M, Amazzough K, Blanche S, Lecuit M, Lortholary O, van der Werf S. Kinetics of nasopharyngeal shedding of novel H1N1 (swine-like) influenza A virus in an immunocompetent adult under oseltamivir therapy. Clin Microbiol Infect 2009; 15:1189-91. [PMID: 19681951 DOI: 10.1111/j.1469-0691.2009.03007.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We describe a patient with confirmed novel H1N1 (swine-like) influenza A virus who had daily nasal swabs tested during oseltamivir therapy. Nasal shedding remained positive for 2 days and became negative on day 3. This report presents the first available data on the kinetics of shedding of this novel virus under antiviral therapy.
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Affiliation(s)
- C Charlier
- Université Paris Descartes, Service de Maladies Infectieuses et Tropicales, Centre d'Infectiologie Necker-Pasteur, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Paris, France
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44
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Collao X, Palacios G, Sanbonmatsu-Gámez S, Pérez-Ruiz M, Negredo AI, Navarro-Marí JM, Grandadam M, Aransay AM, Lipkin WI, Tenorio A, Sánchez-Seco MP. Genetic diversity of Toscana virus. Emerg Infect Dis 2009; 15:574-7. [PMID: 19331735 PMCID: PMC2671431 DOI: 10.3201/eid1504.081111] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Distribution of Toscana virus (TOSV) is evolving with climate change, and pathogenicity may be higher in nonexposed populations outside areas of current prevalence (Mediterranean Basin). To characterize genetic diversity of TOSV, we determined the coding sequences of isolates from Spain and France. TOSV is more diverse than other well-studied phleboviruses (e.g.,Rift Valley fever virus).
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45
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Pagès F, Peyrefitte CN, Mve MT, Jarjaval F, Brisse S, Iteman I, Gravier P, Tolou H, Nkoghe D, Grandadam M. Aedes albopictus mosquito: the main vector of the 2007 Chikungunya outbreak in Gabon. PLoS One 2009; 4:e4691. [PMID: 19259263 PMCID: PMC2649504 DOI: 10.1371/journal.pone.0004691] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2008] [Accepted: 02/02/2009] [Indexed: 11/28/2022] Open
Abstract
The primary vector at the origin of the 2007 outbreak in Libreville, Gabon is identified as Aedes albopictus, trapped around the nearby French military camp. The Chikungunya virus was isolated from mosquitoes and found to be identical to the A226V circulating human strain. This is the first field study showing the role of the recently arrived species Aedes albopictus in Chikungunya virus transmission in Central Africa, and it demonstrates this species' role in modifying the epidemiological presentation of Chikungunya in Gabon.
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Affiliation(s)
- Frédéric Pagès
- Institut de médecine tropicale du Service de santé des armées, Unité d'entomologie médicale, URMITE UMR 6236, Marseille, France.
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46
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Tarantola A, Quatresous I, Ledrans M, Lassel L, Krastinova E, Cordel H, Lapidus N, Debruyne M, Poveda JD, Boude-Chevalier M, Schuffenecker I, Zeller H, Grandadam M, Tolou H, Paquet C. Dengue d’importation diagnostiquée en France métropolitaine, janvier 2001–décembre 2006. Med Mal Infect 2009; 39:41-7. [DOI: 10.1016/j.medmal.2008.09.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2007] [Revised: 06/19/2008] [Accepted: 09/10/2008] [Indexed: 10/21/2022]
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47
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Peyrefitte CN, Boubis L, Coudrier D, Bouloy M, Grandadam M, Tolou HJ, Plumet S. Real-time reverse-transcription loop-mediated isothermal amplification for rapid detection of rift valley Fever virus. J Clin Microbiol 2008; 46:3653-9. [PMID: 18799705 PMCID: PMC2576582 DOI: 10.1128/jcm.01188-08] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2008] [Revised: 07/29/2008] [Accepted: 09/08/2008] [Indexed: 12/31/2022] Open
Abstract
The development and validation of a one-step, single-tube, real-time accelerated reverse-transcription loop-mediated isothermal amplification (RT-LAMP) for the detection of the L RNA segment of Rift Valley fever virus (RVFV) are described. The assay was performed at a constant temperature (63 degrees C), with a real-time follow-up using a LightCycler and a double-stranded-DNA-intercalating fluorochrome. The assay is highly sensitive and comparable to real-time RT-PCR, with a detection limit of approximately 10 RNA copies per assay. However, the RT-LAMP assay is much faster than traditional RT-PCR and generates results in <30 min for most diluted samples. The specificity of the primers was established using other, related arboviruses as well as virus-containing and virus-free sera. The RT-LAMP assay reported here is thus a valuable tool for the rapid detection of RVFV in field diagnostic laboratories.
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Affiliation(s)
- Christophe N Peyrefitte
- Unité de virologie tropicale, Institut de Médecine tropicale du Service de Santé des Armées, BP 46, 13 998 Marseille armées, France
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48
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Balenghien T, Vazeille M, Grandadam M, Schaffner F, Zeller H, Reiter P, Sabatier P, Fouque F, Bicout DJ. Vector Competence of Some French Culex and Aedes Mosquitoes for West Nile Virus. Vector Borne Zoonotic Dis 2008; 8:589-95. [DOI: 10.1089/vbz.2007.0266] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Thomas Balenghien
- Équipe Environnement et prédiction de la santé des populations, Laboratoire TIMC-IMAG, École nationale vétérinaire de Lyon (ENVL), France and CIRAD, UPR Contrôle des Maladies, Montpellier, France. (present affiliation)
| | - Marie Vazeille
- Unité Insectes et maladies infectieuses and Département de Virologie (present affiliation), Institut Pasteur, Paris, France
| | - Marc Grandadam
- Unité de Virologie tropicale, associated laboratoy to the Centre national de référence des arbovirus, Institut de médecine tropicale du Services de santé des armées (IMTSSA), Marseille, France
| | - Francis Schaffner
- Institute of Parasitology, University of Zurich, Suisse (present affiliation), and EID-Méditerranée (Mosquito Control Agency), Montpellier, France
| | - Hervé Zeller
- Centre national de référence des arbovirus et fièvres hémorragiques, Institut Pasteur, Lyon, France
| | - Paul Reiter
- Unité Insectes et maladies infectieuses, Institut Pasteur, Paris, France
| | - Philippe Sabatier
- Équipe Environnement et prédiction de la santé des populations, Laboratoire TIMC-IMAG, École nationale vétérinaire de Lyon (ENVL), France
| | - Florence Fouque
- Cellule d'intervention biologique d'urgence (CIBU), Institut Pasteur, Paris, France
| | - Dominique J. Bicout
- Équipe Environnement et prédiction de la santé des populations, Laboratoire TIMC-IMAG, École nationale vétérinaire de Lyon (ENVL), France
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49
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Peyrefitte CN, Bessaud M, Pastorino BAM, Gravier P, Plumet S, Merle OL, Moltini I, Coppin E, Tock F, Daries W, Ollivier L, Pages F, Martin R, Boniface F, Tolou HJ, Grandadam M. Circulation of Chikungunya virus in Gabon, 2006-2007. J Med Virol 2008; 80:430-3. [PMID: 18205212 DOI: 10.1002/jmv.21090] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
This study reports the first isolation and partial genetic characterization of Chikungunya virus (CHIKV) from patients during a 2006-2007 dengue-like syndrome outbreak in Gabon. The isolated viruses were phylogenetically close to strains isolated in the Democratic Republic of the Congo 7 years ago and to strains isolated more recently in Cameroon. These results indicate a continuing circulation of a genetically stable CHIKV population during 7 years in Central Africa.
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Affiliation(s)
- Christophe N Peyrefitte
- Unité de Virologie Tropicale, Institut de Médecine Tropicale du Service de Santé des Armées, Marseille, France
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Peyrefitte CN, Rousset D, Pastorino BA, Pouillot R, Bessaud M, Tock F, Mansaray H, Merle OL, Pascual AM, Paupy C, Vessiere A, Imbert P, Tchendjou P, Durand JP, Tolou HJ, Grandadam M. Chikungunya virus, Cameroon, 2006. Emerg Infect Dis 2008; 13:768-71. [PMID: 17553262 PMCID: PMC2738435 DOI: 10.3201/eid1305.061500] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
We report the isolation of chikungunya virus from a patient during an outbreak of a denguelike syndrome in Cameroon in 2006. The virus was phylogenetically grouped in the Democratic Republic of the Congo cluster, indicating a continuous circulation of a genetically similar chikungunya virus population during 6 years in Central Africa.
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Affiliation(s)
| | | | - Boris A.M. Pastorino
- Institut de Médecine Tropicale du Service de Santé des Armées, Marseille, France
| | | | - Maël Bessaud
- Institut de Médecine Tropicale du Service de Santé des Armées, Marseille, France
| | - Fabienne Tock
- Institut de Médecine Tropicale du Service de Santé des Armées, Marseille, France
| | | | - Olivier L. Merle
- Institut de Médecine Tropicale du Service de Santé des Armées, Marseille, France
| | - Aurelie M. Pascual
- Institut de Médecine Tropicale du Service de Santé des Armées, Marseille, France
| | | | | | - Patrice Imbert
- Institut de Recherche pour le Développement, Yaoundé, Cameroon
| | | | - Jean-Paul Durand
- Institut de Médecine Tropicale du Service de Santé des Armées, Marseille, France
| | - Hugues J. Tolou
- Institut de Médecine Tropicale du Service de Santé des Armées, Marseille, France
| | - Marc Grandadam
- Institut de Médecine Tropicale du Service de Santé des Armées, Marseille, France
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