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Kumar G, Gupta S, Kaur J, Pasi S, Baharia R, Mohanty AK, Goel P, Sharma A, Rahi M. Mapping malaria vectors and insecticide resistance in a high-endemic district of Haryana, India: implications for vector control strategies. Malar J 2024; 23:107. [PMID: 38632650 PMCID: PMC11022408 DOI: 10.1186/s12936-023-04797-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 11/20/2023] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Achieving effective control and elimination of malaria in endemic regions necessitates a comprehensive understanding of local mosquito species responsible for malaria transmission and their susceptibility to insecticides. METHODS The study was conducted in the highly malaria prone Ujina Primary Health Center of Nuh (Mewat) district of Haryana state of India. Monthly entomological surveys were carried out for adult mosquito collections via indoor resting collections, light trap collections, and pyrethrum spray collections. Larvae were also collected from different breeding sites prevalent in the region. Insecticide resistance bioassay, vector incrimination, blood meal analysis was done with the collected vector mosquitoes. RESULTS A total of 34,974 adult Anopheles mosquitoes were caught during the survey period, out of which Anopheles subpictus was predominant (54.7%). Among vectors, Anopheles stephensi was predominant (15.5%) followed by Anopheles culicifacies (10.1%). The Human Blood Index (HBI) in the case of An. culicifacies and An. stephensi was 6.66 and 9.09, respectively. Vector incrimination results revealed Plasmodium vivax positivity rate of 1.6% for An. culicifacies. Both the vector species were found resistant to DDT, malathion and deltamethrin. CONCLUSION The emergence of insecticide resistance in both vector species, compromises the effectiveness of commonly used public health insecticides. Consequently, the implementation of robust insecticide resistance management strategies becomes imperative. To effectively tackle the malaria transmission, a significant shift in vector control strategies is warranted, with careful consideration and adaptation to address specific challenges encountered in malaria elimination efforts.
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Affiliation(s)
- Gaurav Kumar
- ICMR-National Institute of Malaria Research, New Delhi, India
| | - Sanjeev Gupta
- ICMR-National Institute of Malaria Research, New Delhi, India
| | - Jaspreet Kaur
- ICMR-National Institute of Malaria Research, New Delhi, India
- Academy of Scientific and Innovative Research, Ghaziabad, India
| | - Shweta Pasi
- ICMR-National Institute of Malaria Research, New Delhi, India
- ICMR-National Institute of Occupational Health, Ahmedabad, India
| | - Rajendra Baharia
- ICMR-National Institute of Malaria Research, New Delhi, India
- Academy of Scientific and Innovative Research, Ghaziabad, India
| | | | - Pawan Goel
- Shaheed Hasan Khan Mewati Government Medical College, Nuh, Haryana, India
| | - Amit Sharma
- ICMR-National Institute of Malaria Research, New Delhi, India
- Academy of Scientific and Innovative Research, Ghaziabad, India
- International Centre of Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Manju Rahi
- ICMR-National Institute of Malaria Research, New Delhi, India.
- Academy of Scientific and Innovative Research, Ghaziabad, India.
- Indian Council of Medical Research (ICMR), New Delhi, India.
- ICMR-Vector Control Research Center, Puducherry, India.
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Khan N, Awasthi G, Das A. How can the complex epidemiology of malaria in India impact its elimination? Trends Parasitol 2023; 39:432-444. [PMID: 37031071 PMCID: PMC10175201 DOI: 10.1016/j.pt.2023.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 03/04/2023] [Accepted: 03/10/2023] [Indexed: 04/10/2023]
Abstract
Malaria is a human health hazard in the tropical and subtropical zones of the globe and is poised to be eliminated by the year 2030. Despite a decrease in incidence in the past two decades, many endemic countries, including India, report cases regularly. The epidemiology of malaria in India is unique owing to several features of the Plasmodium parasites, Anopheles vectors, ecoepidemiological situations conducive to disease transmission, and susceptible humans living in rural and forested areas. Limitations in public health reach, and poor health-seeking behaviour of vulnerable populations living in hard-to-reach areas, add to the problem. We bring all of these factors together in a comprehensive framework and opine that, in spite of complexities, targeted elimination of malaria in India is achievable with planned programmatic approaches.
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Affiliation(s)
- Nikhat Khan
- Molecular Epidemiology Laboratory, ICMR-National Institute of Research in Tribal Health, Jabalpur, India
| | | | - Aparup Das
- Molecular Epidemiology Laboratory, ICMR-National Institute of Research in Tribal Health, Jabalpur, India.
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Lalmalsawma P, Balasubramani K, James MM, Pautu L, Prasad KA, Sarma DK, Balabaskaran Nina P. Malaria hotspots and climate change trends in the hyper-endemic malaria settings of Mizoram along the India-Bangladesh borders. Sci Rep 2023; 13:4538. [PMID: 36941291 PMCID: PMC10025798 DOI: 10.1038/s41598-023-31632-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 03/15/2023] [Indexed: 03/23/2023] Open
Abstract
India has made tremendous progress in reducing malaria mortality and morbidity in the last decade. Mizoram State in North-East India is one of the few malaria-endemic regions where malaria transmission has continued to remain high. As Mizoram shares international borders with Bangladesh and Myanmar, malaria control in this region is critical for malaria elimination efforts in all the three countries. For identifying hotspots for targeted intervention, malaria data from 385 public health sub-centers across Mizoram were analyzed in the Geographic Information System. Almost all the sub-centers reporting high Annual Parasite Index (> 10) are located in Mizoram's districts that border Bangladesh. Getis-Ord Gi* statistic shows most of the sub-centers located along the Bangladesh border in the Lawngtlai and Lunglei districts to be the malaria hotspots. The hotspots also extended into the Mamit and Siaha districts, especially along the borders of Lawngtlai and Lunglei. Analysis of terrain, climatic, and land use/land cover datasets obtained from the Global Modelling and Assimilation Office and satellite images show Mizoram's western part (Lawngtlai, Lunglei, and Mamit districts) to experience similar topographic and climatic conditions as the bordering Rangamati district in the Chittagong division of Bangladesh. Climatic trends in this region from 1981 to 2021, estimated by the Mann-Kendall test and Sen's slope estimates, show an increasing trend in minimum temperature, relative humidity, rainfall, and the associated shift of climatic pattern (temperate to tropical monsoon) could facilitate malaria transmission. The quasi-Poisson regression model estimates a strong association (p < 0.001) between total malaria cases, temperature range, and elevation. The Kruskal-Wallis H test shows a statistically significant association between malaria cases and forest classes (p < 0.001). A regional coordination and strategic plan are required to eliminate malaria from this hyper-endemic malaria region of North-East India.
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Affiliation(s)
- Pachuau Lalmalsawma
- Integrated Disease Surveillance Programme, Health and Family Welfare Department, Aizawl, Mizoram, India
| | - K Balasubramani
- Department of Geography, School of Earth Sciences, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu, India
| | - Meenu Mariya James
- Department of Epidemiology and Public Health, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu, India
| | - Lalfakzuala Pautu
- Integrated Disease Surveillance Programme, Health and Family Welfare Department, Aizawl, Mizoram, India
- Department of Life Sciences, Pachhunga University College, Mizoram University, Aizawl, Mizoram, India
| | - Kumar Arun Prasad
- Department of Geography, School of Earth Sciences, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu, India
| | - Devojit Kumar Sarma
- ICMR- National Institute for Research in Environmental Health, Bhopal, Madhya Pradesh, India.
| | - Praveen Balabaskaran Nina
- Department of Epidemiology and Public Health, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu, India.
- Department of Public Health and Community Medicine, Central University of Kerala, Kasaragod, Kerala, India.
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Seasonal dynamics of Anopheles stephensi and its implications for mosquito detection and emergent malaria control in the Horn of Africa. Proc Natl Acad Sci U S A 2023; 120:e2216142120. [PMID: 36791102 PMCID: PMC9974477 DOI: 10.1073/pnas.2216142120] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
Abstract
Invasion of the malaria vector Anopheles stephensi across the Horn of Africa threatens control efforts across the continent, particularly in urban settings where the vector is able to proliferate. Malaria transmission is primarily determined by the abundance of dominant vectors, which often varies seasonally with rainfall. However, it remains unclear how An. stephensi abundance changes throughout the year, despite this being a crucial input to surveillance and control activities. We collate longitudinal catch data from across its endemic range to better understand the vector's seasonal dynamics and explore the implications of this seasonality for malaria surveillance and control across the Horn of Africa. Our analyses reveal pronounced variation in seasonal dynamics, the timing and nature of which are poorly predicted by rainfall patterns. Instead, they are associated with temperature and patterns of land use; frequently differing between rural and urban settings. Our results show that timing entomological surveys to coincide with rainy periods is unlikely to improve the likelihood of detecting An. stephensi. Integrating these results into a malaria transmission model, we show that timing indoor residual spraying campaigns to coincide with peak rainfall offers little improvement in reducing disease burden compared to starting in a random month. Our results suggest that unlike other malaria vectors in Africa, rainfall may be a poor guide to predicting the timing of peaks in An. stephensi-driven malaria transmission. This highlights the urgent need for longitudinal entomological monitoring of the vector in its new environments given recent invasion and potential spread across the continent.
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Molecular forms of the Indian Anopheles subpictus complex differ in their susceptibility to insecticides and the presence of knockdown resistance (kdr) mutations in the voltage-gated sodium channel. PLoS One 2023; 18:e0280289. [PMID: 36730315 PMCID: PMC9894496 DOI: 10.1371/journal.pone.0280289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 12/23/2022] [Indexed: 02/03/2023] Open
Abstract
OBJECTIVES To investigate the differential insecticide-susceptibility of two molecular forms of Anopheles subpictus complex (A and B) against DDT and pyrethroids, the occurrence of knockdown resistance (kdr) mutations in these forms, and the association of kdr mutations with insecticide resistance. METHODS Insecticide susceptibility tests of An. subpictus s.l., collected from coastal and inland areas of mainland India, were performed against DDT, permethrin and deltamethrin using the WHO standard insecticide susceptibility test kit. The mosquitoes were characterized for molecular forms using a diagnostic PCR developed in this study. Representative samples of An. subpictus molecular forms A and B were sequenced for a genomic region encompassing the IIS4-5 linker to the IIS6 segments of the voltage-gated sodium channel to identify kdr mutations. A common PIRA-PCR was developed for identifying L1014F-kdr mutation and used for genotyping in both molecular forms of An. subpictus. RESULTS Molecular form A of An. subpictus was resistant to all three insecticides, i.e., DDT, Permethrin and deltamethrin, whereas Form B was categorized as 'possibly resistant' to these insecticides. Significantly higher mortalities in WHO insecticide susceptibility tests were recorded in Form B compared to Form A in sympatric populations. Molecular characterization of the IIS4-5 linker to IIS-6 segments of the voltage-gated sodium channel revealed the presence of two alternative nucleotide transversions at L1014 residue in Form A, both leading to the same amino acid change, i.e., Leu-to-Phe; however, such mutations could not be observed in Form B. PIRA-PCR-based kdr-genotyping of field populations revealed high frequencies of L1014F-kdr mutations in Form A and the absence of this mutation in Form B. The proportion of L1014F mutation was significantly higher in resistant mosquitoes following insecticide-bioassay with DDT (p<0.0001), permethrin (p<0.001) and deltamethrin (p<0.01) as compared to their susceptible counterparts. CONCLUSIONS Significant differences in insecticide susceptibility were found between two molecular forms of An. subpictus complex in sympatric populations. The L1014F-kdr mutation was observed in Form A only, which was found to be associated with DDT, permethrin and deltamethrin resistance.
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Seal M, Chatterjee S. Combined effect of physico-chemical and microbial quality of breeding habitat water on oviposition of malarial vector Anopheles subpictus. PLoS One 2023; 18:e0282825. [PMID: 36897874 PMCID: PMC10004544 DOI: 10.1371/journal.pone.0282825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 02/24/2023] [Indexed: 03/11/2023] Open
Abstract
Mosquitoes prefer diverse water bodies for egg laying and larval survival. Present study was performed with an objective to characterize physico-chemical properties and microbial profiling of breeding habitat water bodies of Anopheles subpictus mosquitoes. A field survey was accomplished to check the presence of An. subpictus larvae to record per dip larval density in various breeding habitats throughout the year. Physico-chemical and bacteriological properties in relation to mosquito oviposition were assessed. Dissolved oxygen content, pH and alkalinity were found to have major impacts and ponderosity on the prevalence of An. subpictus larvae. Larval density showed significant positive correlation with dissolved oxygen content of water and significant negative correlation with pH and alkalinity of habitat water. Comparatively higher population (cfu/mL) of Bacillus spp. competent with starch hydrolyzing and nitrate reducing properties were recorded all the breeding habitat water bodies of An. subpictus. Higher amplitude of anopheline larvae was portrayed during monsoon and post-monsoon season in clear water with an inclining trend to high dissolved oxygen content and neutral pH. B. cereus, B. megaterium, B. subtilis and B. tequilensis prevalent in all habitat water bodies were marked as oviposition attractants of gravid An. subpictus mosquitoes. Microbial population played key roles in the modulation of physico-chemical parameters of habitat water with a view to enhance its acceptability by gravid mosquitoes in relation to their oviposition. Better understanding of the interactions along with the control of oviposition attractant bacterial strains from mosquito breeding habitats might contribute to the vector management programme.
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Affiliation(s)
- Madhurima Seal
- Department of Zoology, Parasitology and Microbiology Research Laboratory, The University of Burdwan, Burdwan, West Bengal, India
| | - Soumendranath Chatterjee
- Department of Zoology, Parasitology and Microbiology Research Laboratory, The University of Burdwan, Burdwan, West Bengal, India
- * E-mail:
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Kamaraj C, Gandhi PR, Ragavendran C, Sugumar V, Kumar RCS, Ranjith R, Priyadharsan A, Cherian T. Sustainable development through the bio-fabrication of ecofriendly ZnO nanoparticles and its approaches to toxicology and environmental protection. BIOMASS CONVERSION AND BIOREFINERY 2022:1-17. [PMID: 36320445 PMCID: PMC9610317 DOI: 10.1007/s13399-022-03445-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 10/13/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Mosquito control is becoming more difficult as a result of the rise in resistance to toxic chemical insecticides. The insecticides of bio-fabrication sources may serve as a convenient alternative to environmentally acceptable methods in the future. The larvicidal and pupicidal activities of bio-fabricated zinc oxide nanoparticles (ZnO NPs) on the different instar larvae and pupae of Anopheles subpictus Grassi (Malaria vector) and Culex quinquefasciatus Say (lymphatic filariasis) were investigated in this study. The results recorded from XRD, FTIR, SEM-EDX, and TEM analyses confirmed the bio-fabrication of ZnO NPs. Such nanoparticles were nearly spherical and agglomerated with a size of 34.21 nm. GC-MS analysis of methanol extract revealed the compound, stigmasterol (C29H48O) as major one. Mosquito larvae and pupae of targeted mosquito were tested against varied concentrations of the bio-fabricated ZnO NPs and methanol extract of Vitex negundo for 24 h. The maximum activity was recorded from ZnO NPs against the larvae and pupae of A. subpictus LC50 which were 1.70 (I), 1.66 (II), 1.93 (III), 2.48 (IV), and 3.63 mg/L (pupa) and C. quinquefasciatus LC50 were 1.95 (I), 2.63 (II), 2.90 (III), 4.32 (IV), and 4.61 mg/L (pupa) respectively. ZnO NPs exhibited strong DPPH radical and FRAP scavengers compared to the aqueous extract of V. negundo. Also, V. negundo leaf methanol extract (VNLME) and ZnO NPs were evaluated for their cytotoxicity on HeLa cells, which exhibited the IC50 values of 72.35 and 43.70μg/mL, respectively. The methylene blue (MB) dye, which is harmful to both aquatic and terrestrial life, was degraded using the biosynthesized ZnO nanoparticles. At 664 nm, 81.2% of the MB dye had degraded after 120 min of exposure to sunlight. Overall, our results revealed that ZnO NPs are the perfect biological agent and economical for the control of malaria, filariasis vectors, antioxidant, HeLa cells, and MB blue dye degradation under sunlight irradiation. Graphical abstract
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Affiliation(s)
- Chinnaperumal Kamaraj
- Interdisciplinary Institute of Indian System of Medicine (IIISM), Directorate of Research, SRM Institute of Science and Technology (SRMIST), Kattankulathur, Tamil Nadu 603203 India
| | - Pachiyappan Rajiv Gandhi
- Department of Zoology, Division of Nano-biotechnology, Auxilium College (Autonomous), Vellore District, Gandhi Nagar, Tamil Nadu 632 006 India
| | - Chinnasamy Ragavendran
- Department of Cariology, Saveetha Dental College and Hospitals, Chennai, Tamil Nadu India
| | - Vimal Sugumar
- Department of Biochemistry, Saveetha Medical College & Hospital, Saveetha Institute of Medical and Technical Sciences (SIMATS), Thandalam, Chennai, Tamil Nadu 602105 India
| | - R. C. Satish Kumar
- Interdisciplinary Institute of Indian System of Medicine (IIISM), Directorate of Research, SRM Institute of Science and Technology (SRMIST), Kattankulathur, Tamil Nadu 603203 India
| | - Rajendran Ranjith
- Department of Physics, KSR College Engineering Tiruchengode, Namakkal, Tamil Nadu 637215 India
| | - A. Priyadharsan
- Department of Cariology, Saveetha Dental College and Hospitals, Chennai, Tamil Nadu India
| | - Tijo Cherian
- Department of Ocean Studies and Marine Biology, Pondicherry University, Port Blair campus, Brookshabad, Port Blair, Andamans 744112 India
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Chakrabarti R, Chery-Karschney L, White J, Mascarenhas A, Skillman KM, Kanjee U, Babar PH, Patrapuvich R, Mohapatra PK, Patankar S, Smith JD, Anvikar A, Valecha N, Rahi M, Duraisingh MT, Rathod PK. Diverse Malaria Presentations across National Institutes of Health South Asia International Center for Excellence in Malaria Research Sites in India. Am J Trop Med Hyg 2022; 107:107-117. [PMID: 36228910 PMCID: PMC9662227 DOI: 10.4269/ajtmh.21-1344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 05/14/2022] [Indexed: 11/07/2022] Open
Abstract
The Malaria Evolution in South Asia (MESA) International Center for Excellence in Malaria Research (ICEMR) was established by the US National Institutes of Health (US NIH) as one of 10 malaria research centers in endemic countries. In 10 years of hospital-based and field-based work in India, the MESA-ICEMR has documented the changing epidemiology and transmission of malaria in four different parts of India. Malaria Evolution in South Asia-ICEMR activities, in collaboration with Indian partners, are carried out in the broad thematic areas of malaria case surveillance, vector biology and transmission, antimalarial resistance, pathogenesis, and host response. The program integrates insights from surveillance and field studies with novel basic science studies. This is a two-pronged approach determining the biology behind the disease patterns seen in the field, and generating new relevant biological questions about malaria to be tested in the field. Malaria Evolution in South Asia-ICEMR activities inform local and international stakeholders on the current status of malaria transmission in select parts of South Asia including updates on regional vectors of transmission of local parasites. The community surveys and new laboratory tools help monitor ongoing efforts to control and eliminate malaria in key regions of South Asia including the state of evolving antimalarial resistance in different parts of India, new host biomarkers of recent infection, and molecular markers of pathogenesis from uncomplicated and severe malaria.
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Affiliation(s)
- Rimi Chakrabarti
- Department of Chemistry, University of Washington, Seattle, Washington
- Department of Medicine, Goa Medical College and Hospital, Bambolim, Goa, India
| | | | - John White
- Department of Chemistry, University of Washington, Seattle, Washington
| | - Anjali Mascarenhas
- Department of Chemistry, University of Washington, Seattle, Washington
- Department of Medicine, Goa Medical College and Hospital, Bambolim, Goa, India
| | - Kristen M. Skillman
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
| | - Usheer Kanjee
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
| | - Prasad H. Babar
- Department of Chemistry, University of Washington, Seattle, Washington
- Department of Medicine, Goa Medical College and Hospital, Bambolim, Goa, India
| | - Rapatbhorn Patrapuvich
- Drug Research Unit for Malaria (DRUM), Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | | | - Swati Patankar
- Department of Biosciences and Bioengineering, IIT Bombay, Powai, Mumbai, India
| | | | - Anup Anvikar
- National Institute of Biologicals, Noida, UP, India
| | - Neena Valecha
- National Institute of Malaria Research, New Delhi, India
| | - Manju Rahi
- Division of Epidemiology and Communicable Disease, Indian Council of Medical Research, New Delhi, India
| | - Manoj T. Duraisingh
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
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Mascarenhas A, Chakrabarti R, Chery-Karschney L, White J, Skillman KM, Kanjee U, Babar PH, Patrapuvich R, Mohanty AK, Duraisingh MT, Rathod PK. International Center of Excellence for Malaria Research for South Asia and Broader Malaria Research in India. Am J Trop Med Hyg 2022; 107:118-123. [PMID: 36228906 PMCID: PMC9662211 DOI: 10.4269/ajtmh.22-0005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 05/28/2022] [Indexed: 11/07/2022] Open
Abstract
The Malaria Evolution in South Asia (MESA) International Center of Excellence for Malaria Research (ICEMR) conducted research studies at multiple sites in India to record blood-slide positivity over time, but also to study broader aspects of the disease. From the Southwest of India (Goa) to the Northeast (Assam), the MESA-ICEMR invested in research equipment, operational capacity, and trained personnel to observe frequencies of Plasmodium falciparum and Plasmodium vivax infections, clinical presentations, treatment effectiveness, vector transmission, and reinfections. With Government of India partners, Indian and U.S. academics, and trained researchers on the ground, the MESA-ICEMR team contributes information on malaria in selected parts of India.
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Affiliation(s)
- Anjali Mascarenhas
- Department of Chemistry, University of Washington, Seattle, Washington
- Department of Medicine, Goa Medical College and Hospital, Bambolim, Goa, India
| | - Rimi Chakrabarti
- Department of Chemistry, University of Washington, Seattle, Washington
- Department of Medicine, Goa Medical College and Hospital, Bambolim, Goa, India
| | | | - John White
- Department of Chemistry, University of Washington, Seattle, Washington
| | - Kristen M. Skillman
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Usheer Kanjee
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Prasad H. Babar
- Department of Chemistry, University of Washington, Seattle, Washington
- Department of Medicine, Goa Medical College and Hospital, Bambolim, Goa, India
| | - Rapatbhorn Patrapuvich
- Drug Research Unit for Malaria, Center of Excellence in Malaria Research, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | | | - Manoj T. Duraisingh
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
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Visa Shalini P, Shriram AN, Elango A, Natarajan R, Vijayakumar B, Raju KHK, Dengel L, Gunasekaran K, Kumar A. Mosquito Diversity in an Experimental Township in Tamil Nadu, India. JOURNAL OF MEDICAL ENTOMOLOGY 2022; 59:1615-1624. [PMID: 35703108 PMCID: PMC9473653 DOI: 10.1093/jme/tjac064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Indexed: 06/15/2023]
Abstract
To glean more information on mosquito diversity and distribution in Auroville, a cross-sectional study was carried out by mapping the distribution of water bodies and habitats supporting immature stages on the one hand and the distribution of water bodies/habitats supporting mosquito immature stages on the other. A satellite image covering an area of 8.08 km2 was overlaid with a grid of 500 × 500 m. Fifteen modules were selected and the area of each module served as the sampling site for the entomological survey. Adult and larval stages were sampled. Diversity indices were analyzed to compare mosquito diversity. Rarefaction estimations were used to compare abundance and richness of the mosquito species between different zones. In total, 750 mosquito larvae and 84 resting adults were sampled. Eighteen species of mosquitoes belonging to 11 subgenera and 7 genera were documented. Genera included Aedes (Johann Wilhelm Meigen 1818, Diptera, Culicidae), Anopheles (Johann Wilhelm Meigen 1818, Diptera, Culicidae), Armigeres (Theobald 1901, Diptera, Culicidae), Culex (Carl Linnaeus 1758, Diptera, Culicidae), Lutzia (Theobald 1903, Diptera, Culicidae), and Mimomyia (Theobald 1903, Diptera, Culicidae). Of the 18 mosquito species identified, 8 species are new records for Auroville. The Alpha (α) biodiversity indices show that the mosquito fauna is diverse (S = 18; DMg = 2.732 [95% CI: 2.732-2.732]). The Shannon-Weiner (H' = 2.199 [95% CI: 2.133-2.276]) and Simpson indices (λ = 0.8619 [95% CI: 0.8496-0.8723]) measured species richness, evenness, and dominance. The values of these indices suggest high species richness, evenness, and dominance. Prevailing conditions can provide suitable environment for establishment of different mosquito species in this ecosystem. Given the sociodemographic characteristics of this area, research on mosquito diversity and risk of vector-borne diseases will be of great use.
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Affiliation(s)
- P Visa Shalini
- ICMR-Vector Control Research Centre, Department of Health Research, Ministry of Health & Family Welfare, GOI, Medical Complex, Indira Nagar, Puducherry 605 006, India
| | | | - A Elango
- ICMR-Vector Control Research Centre, Department of Health Research, Ministry of Health & Family Welfare, GOI, Medical Complex, Indira Nagar, Puducherry 605 006, India
| | - R Natarajan
- ICMR-Vector Control Research Centre, Department of Health Research, Ministry of Health & Family Welfare, GOI, Medical Complex, Indira Nagar, Puducherry 605 006, India
| | - B Vijayakumar
- ICMR-Vector Control Research Centre, Department of Health Research, Ministry of Health & Family Welfare, GOI, Medical Complex, Indira Nagar, Puducherry 605 006, India
| | - K H K Raju
- ICMR-Vector Control Research Centre, Department of Health Research, Ministry of Health & Family Welfare, GOI, Medical Complex, Indira Nagar, Puducherry 605 006, India
| | - Lucas Dengel
- EcoPro, Aurosarjan Complex, Auroshilpam, Auroville, Tamil Nadu 605 101, India
| | - K Gunasekaran
- ICMR-Vector Control Research Centre, Department of Health Research, Ministry of Health & Family Welfare, GOI, Medical Complex, Indira Nagar, Puducherry 605 006, India
| | - Ashwani Kumar
- ICMR-Vector Control Research Centre, Department of Health Research, Ministry of Health & Family Welfare, GOI, Medical Complex, Indira Nagar, Puducherry 605 006, India
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Whittaker C, Winskill P, Sinka M, Pironon S, Massey C, Weiss DJ, Nguyen M, Gething PW, Kumar A, Ghani A, Bhatt S. A novel statistical framework for exploring the population dynamics and seasonality of mosquito populations. Proc Biol Sci 2022; 289:20220089. [PMID: 35414241 PMCID: PMC9006040 DOI: 10.1098/rspb.2022.0089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Understanding the temporal dynamics of mosquito populations underlying vector-borne disease transmission is key to optimizing control strategies. Many questions remain surrounding the drivers of these dynamics and how they vary between species-questions rarely answerable from individual entomological studies (that typically focus on a single location or species). We develop a novel statistical framework enabling identification and classification of time series with similar temporal properties, and use this framework to systematically explore variation in population dynamics and seasonality in anopheline mosquito time series catch data spanning seven species, 40 years and 117 locations across mainland India. Our analyses reveal pronounced variation in dynamics across locations and between species in the extent of seasonality and timing of seasonal peaks. However, we show that these diverse dynamics can be clustered into four 'dynamical archetypes', each characterized by distinct temporal properties and associated with a largely unique set of environmental factors. Our results highlight that a range of environmental factors including rainfall, temperature, proximity to static water bodies and patterns of land use (particularly urbanicity) shape the dynamics and seasonality of mosquito populations, and provide a generically applicable framework to better identify and understand patterns of seasonal variation in vectors relevant to public health.
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Affiliation(s)
- Charles Whittaker
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College, London, UK
| | - Peter Winskill
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College, London, UK
| | | | | | - Claire Massey
- Big Data Institute, University of Oxford, Old Road Campus, Oxford, UK
| | - Daniel J Weiss
- Malaria Atlas Project, Telethon Kids Institute, Perth Children's Hospital, Nedlands, WA 6009, Australia.,School of Public Health, Curtin University, Bentley, WA 6102, Australia
| | - Michele Nguyen
- Asian School of the Environment, Nanyang Technological University, Singapore, Singapore
| | - Peter W Gething
- Malaria Atlas Project, Telethon Kids Institute, Perth Children's Hospital, Nedlands, WA 6009, Australia.,School of Public Health, Curtin University, Bentley, WA 6102, Australia
| | - Ashwani Kumar
- Vector Control Research Centre, Indira Nagar, Puducherry, India
| | - Azra Ghani
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College, London, UK
| | - Samir Bhatt
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College, London, UK.,Section of Epidemiology, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
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12
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Mirahmadi H, Kazemipour N, Yazdiani A, Mehravaran A, Basseri HR, Mohammadi L, Alijani E. Investigation of LAMP Technique in Diagnosis Type of Plasmodium Species in Anopheles Mosquitoes :A Fast and Practical Technique to Detect Malaria Pathogens in the Field. Ethiop J Health Sci 2021; 31:743-752. [PMID: 34703173 PMCID: PMC8512941 DOI: 10.4314/ejhs.v31i4.8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 12/28/2020] [Indexed: 12/07/2022] Open
Abstract
Background Malaria is one of the main parasitic diseases and a major health issue in some countries. This study aims to determine the rate and type of infections of Anopheles mosquitoes with malaria parasites using the molecular LAMP method in the Southeastern Iran. Methods In this study, 400 Anopheles mosquitoes were collected by the Zahedan Medical Insecticide Center in Nikshahr City, a high-risk area of malaria transmission in Sistan-Baluchestan Province. The mosquitoes were caught manually (by hand) in domestic (humans and animals), natural, and artificial outdoor places (Shelter pits). After DNA extraction, the LAMP method was used, which was compared with Multiplex Nested-PCR as a standard method. Results Out of 400 samples collected from Nikshahr City, 6 samples (1.5%) were infected with Plasmodium vivax. No Plasmodium falciparum or a mix (Plasmodium vivax and Plasmodium falciparum) was detected in this study. Conclusions The results of this study indicate that in places with transmission of both species, i.e. Plasmodium vivax and Plasmodium falciparum, detection of malaria parasites by the LAMP method could be very useful in spotting infections in the field. Thus, molecular epidemiological studies could be conducted annually to monitor malaria in endemic regions. The results of this research show that contamination with mosquito malaria vectors is increasing in Nikshahr City, and it seems that more studies will be required to eliminate malaria until 2026.
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Affiliation(s)
- Hadi Mirahmadi
- Infectious Disease and Tropical Medicine Research Center, Resistance Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran.,Department of Parasitology and Mycology, Faculty of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Nadia Kazemipour
- Department of Microbiology, Faculty of Basic Sciences, Islamic Azad University, Kerman, Kerman, Iran
| | - Anis Yazdiani
- Department of Microbiology, Faculty of Basic Sciences, Islamic Azad University, Kerman, Kerman, Iran
| | - Ahmad Mehravaran
- Infectious Disease and Tropical Medicine Research Center, Resistance Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran.,Department of Parasitology and Mycology, Faculty of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Hamid Reza Basseri
- Department of Medical Entomology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Leili Mohammadi
- Infectious Disease and Tropical Medicine Research Center, Resistance Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Ebrahim Alijani
- Clinical Immunology Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
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13
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Mohanty AK, de Souza C, Harjai D, Ghavanalkar P, Fernandes M, Almeida A, Walke J, Manoharan SK, Pereira L, Dash R, Mascarenhas A, Gomes E, Thita T, Chery L, Anvikar AR, Kumar A, Valecha N, Rathod PK, Patrapuvich R. Optimization of Plasmodium vivax sporozoite production from Anopheles stephensi in South West India. Malar J 2021; 20:221. [PMID: 34006297 PMCID: PMC8129701 DOI: 10.1186/s12936-021-03767-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 05/12/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Efforts to study the biology of Plasmodium vivax liver stages, particularly the latent hypnozoites, have been hampered by the limited availability of P. vivax sporozoites. Anopheles stephensi is a major urban malaria vector in Goa and elsewhere in South Asia. Using P. vivax patient blood samples, a series of standard membrane-feeding experiments were performed with An. stephensi under the US NIH International Center of Excellence for Malaria Research (ICEMR) for Malaria Evolution in South Asia (MESA). The goal was to understand the dynamics of parasite development in mosquitoes as well as the production of P. vivax sporozoites. To obtain a robust supply of P. vivax sporozoites, mosquito-rearing and mosquito membrane-feeding techniques were optimized, which are described here. METHODS Membrane-feeding experiments were conducted using both wild and laboratory-colonized An. stephensi mosquitoes and patient-derived P. vivax collected at the Goa Medical College and Hospital. Parasite development to midgut oocysts and salivary gland sporozoites was assessed on days 7 and 14 post-feeding, respectively. The optimal conditions for mosquito rearing and feeding were evaluated to produce high-quality mosquitoes and to yield a high sporozoite rate, respectively. RESULTS Laboratory-colonized mosquitoes could be starved for a shorter time before successful blood feeding compared with wild-caught mosquitoes. Optimizing the mosquito-rearing methods significantly increased mosquito survival. For mosquito feeding, replacing patient plasma with naïve serum increased sporozoite production > two-fold. With these changes, the sporozoite infection rate was high (> 85%) and resulted in an average of ~ 22,000 sporozoites per mosquito. Some mosquitoes reached up to 73,000 sporozoites. Sporozoite production could not be predicted from gametocyte density but could be predicted by measuring oocyst infection and oocyst load. CONCLUSIONS Optimized conditions for the production of high-quality P. vivax sporozoite-infected An. stephensi were established at a field site in South West India. This report describes techniques for producing a ready resource of P. vivax sporozoites. The improved protocols can help in future research on the biology of P. vivax liver stages, including hypnozoites, in India, as well as the development of anti-relapse interventions for vivax malaria.
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Affiliation(s)
- Ajeet Kumar Mohanty
- Field Unit, National Institute of Malaria Research, Campal, Goa, 403001, India.
| | - Charles de Souza
- Field Unit, National Institute of Malaria Research, Campal, Goa, 403001, India
| | - Deepika Harjai
- Field Unit, National Institute of Malaria Research, Campal, Goa, 403001, India
| | | | - Mezia Fernandes
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India.,Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Anvily Almeida
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India.,Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Jayashri Walke
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India.,Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Suresh Kumar Manoharan
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India.,Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Ligia Pereira
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India.,Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Rashmi Dash
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India.,Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Anjali Mascarenhas
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India.,Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Edwin Gomes
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Thanyapit Thita
- Drug Research Unit for Malaria (DRUM), Center of Excellence in Malaria Research, Faculty of Tropical Medicine, Mahidol University, Bangkok, 10400, Thailand
| | - Laura Chery
- Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Anupkumar R Anvikar
- National Institute of Malaria Research (ICMR), Sector 8, Dwarka, New Delhi, 110077, India
| | - Ashwani Kumar
- Field Unit, National Institute of Malaria Research, Campal, Goa, 403001, India.,ICMR-Vector Control Research Centre, Medical Complex, VCRC Road, Indra Nagar, Priyadarshini Nagar, Puducherry, 605006, India
| | - Neena Valecha
- National Institute of Malaria Research (ICMR), Sector 8, Dwarka, New Delhi, 110077, India
| | | | - Rapatbhorn Patrapuvich
- Drug Research Unit for Malaria (DRUM), Center of Excellence in Malaria Research, Faculty of Tropical Medicine, Mahidol University, Bangkok, 10400, Thailand.
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14
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Sindhania A, Das MK, Sharma G, Surendran SN, Kaushal BR, Lohani HP, Singh OP. Molecular forms of Anopheles subpictus and Anopheles sundaicus in the Indian subcontinent. Malar J 2020; 19:417. [PMID: 33213479 PMCID: PMC7678295 DOI: 10.1186/s12936-020-03492-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 11/11/2020] [Indexed: 11/28/2022] Open
Abstract
Background Anopheles subpictus and Anopheles sundaicus are closely related species, each comprising several sibling species. Ambiguities exist in the classification of these two nominal species and the specific status of members of these species complexes. Identifying fixed molecular forms and mapping their spatial distribution will help in resolving the taxonomic ambiguities and understanding their relative epidemiological significance. Methods DNA sequencing of Internal Transcribed Spacer-2 (ITS2), 28S-rDNA (D1-to-D3 domains) and cytochrome oxidase-II (COII) of morphologically identified specimens of two nominal species, An. subpictus sensu lato (s.l.) and An. sundaicus s.l., collected from the Indian subcontinent, was performed and subjected to genetic distance and molecular phylogenetic analyses. Results Molecular characterization of mosquitoes for rDNA revealed the presence of two molecular forms of An. sundaicus s.l. and three molecular forms of An. subpictus s.l. (provisionally designated as Form A, B and C) in the Indian subcontinent. Phylogenetic analyses revealed two distinct clades: (i) subpictus clade, with a single molecular form of An. subpictus (Form A) prevalent in mainland India and Sri Lanka, and (ii) sundaicus clade, comprising of members of Sundaicus Complex, two molecular forms of An. subpictus s.l. (Form B and C), prevalent in coastal areas or islands in Indian subcontinent, and molecular forms of An. subpictus s.l. reported from Thailand and Indonesia. Based on the number of float-ridges on eggs, all An. subpictus molecular Form B were classified as Species B whereas majority (80%) of the molecular Form A were classified as sibling species C. Fixed intragenomic sequence variation in ITS2 with the presence of two haplotypes was found in molecular Form A throughout its distribution. Conclusion A total of three molecular forms of An. subpictus s.l. and two molecular forms of An. sundaicus s.l. were recorded in the Indian subcontinent. Phylogenetically, two forms of An. subpictus s.l. (Form B and C) prevalent in coastal areas or islands in the Indian subcontinent and molecular forms reported from Southeast Asia are members of Sundaicus Complex. Molecular Form A of An. subpictus is distantly related to all other forms and deserve a distinct specific status.
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Affiliation(s)
- Ankita Sindhania
- National Institute of Malaria Research, Sector 8 Dwarka, New Delhi, 110077, India
| | - Manoj K Das
- National Institute of Malaria Research, Field Unit, Itki, Ranchi, 835301, India
| | - Gunjan Sharma
- National Institute of Malaria Research, Sector 8 Dwarka, New Delhi, 110077, India
| | | | - B R Kaushal
- Department of Zoology, Kumaun University, Nainital, India
| | | | - Om P Singh
- National Institute of Malaria Research, Sector 8 Dwarka, New Delhi, 110077, India.
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15
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Sarma DK, Mohapatra PK, Bhattacharyya DR, Chellappan S, Karuppusamy B, Barman K, Senthil Kumar N, Dash AP, Prakash A, Balabaskaran Nina P. Malaria in North-East India: Importance and Implications in the Era of Elimination. Microorganisms 2019; 7:microorganisms7120673. [PMID: 31835597 PMCID: PMC6956115 DOI: 10.3390/microorganisms7120673] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 11/26/2019] [Accepted: 11/29/2019] [Indexed: 12/15/2022] Open
Abstract
Worldwide and in India, malaria elimination efforts are being ramped up to eradicate the disease by 2030. Malaria elimination efforts in North-East (NE) India will have a great bearing on the overall efforts to eradicate malaria in the rest of India. The first cases of chloroquine and sulfadoxine-pyrimethamine resistance were reported in NE India, and the source of these drug resistant parasites are most likely from South East Asia (SEA). NE India is the only land route through which the parasites from SEA can enter the Indian mainland. India’s malaria drug policy had to be constantly updated due to the emergence of drug resistant parasites in NE India. Malaria is highly endemic in many parts of NE India, and Plasmodium falciparum is responsible for the majority of the cases. Highly efficient primary vectors and emerging secondary vectors complicate malaria elimination efforts in NE India. Many of the high transmission zones in NE India are tribal belts, and are difficult to access. The review details the malaria epidemiology in seven NE Indian states from 2008 to 2018. In addition, the origin and evolution of resistance to major anti-malarials are discussed. Furthermore, the bionomics of primary vectors and emergence of secondary malaria vectors, and possible strategies to prevent and control malaria in NE are outlined.
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Affiliation(s)
- Devojit Kumar Sarma
- ICMR-National Institute for Research in Environmental Health, Bhopal, Madhya Pradesh 462030, India;
| | | | | | | | | | - Keshab Barman
- State NVBDCP Unit, Directorate of Health Services, Govt. of Assam, Guwahati 781005, Assam, India;
| | | | | | - Anil Prakash
- ICMR-National Institute for Research in Environmental Health, Bhopal, Madhya Pradesh 462030, India;
- Correspondence: (A.P.); (P.B.N.)
| | - Praveen Balabaskaran Nina
- Department of Epidemiology and Public Health, Central University of Tamil Nadu, Tiruvarur 610005, India
- Correspondence: (A.P.); (P.B.N.)
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16
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Subbarao SK, Nanda N, Rahi M, Raghavendra K. Biology and bionomics of malaria vectors in India: existing information and what more needs to be known for strategizing elimination of malaria. Malar J 2019; 18:396. [PMID: 31796010 PMCID: PMC6892149 DOI: 10.1186/s12936-019-3011-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 11/16/2019] [Indexed: 01/28/2023] Open
Abstract
India has committed to eliminate malaria by 2030. The national framework for malaria elimination released by the Government of India plans to achieve this goal through strategic planning in a phased manner. Since vector control is a major component of disease management and vector elimination, it requires a thorough understanding of the biology and bionomics of malaria vectors exhibiting definite distribution patterns in diverse ecosystems in the country. Although a wealth of information is available on these aspects, lesser-known data are on biting time and rhythm, and the magnitude of outdoor transmission by the vectors which are crucial for effective implementation of the key vector control interventions. Most of the data available for the vector species are at sensu lato level, while the major vectors are species complexes and their members distinctly differ in biological characters. Furthermore, the persistent use of insecticides in indoor residual spray and long-lasting insecticidal nets has resulted in widespread resistance in vectors and changes in their behaviour. In this document, challenges in vector control in the Indian context have been identified and possible solutions to overcome the problem are suggested. Adequate addressing of the issues raised would greatly help make a deep dent in malaria transmission and consequently result in disease elimination within the targeted time frame.
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Affiliation(s)
- Sarala K Subbarao
- Indian Council of Medical Research (ICMR), Ramalingaswami Bhavan, New Delhi, India. .,ICMR-National Institute of Malaria Research (NIMR), Sector-8, Dwarka, Delhi, India. .,, Delhi, India.
| | - Nutan Nanda
- ICMR-National Institute of Malaria Research (NIMR), Sector-8, Dwarka, Delhi, India.,, Delhi, India
| | - Manju Rahi
- Indian Council of Medical Research (ICMR), Ramalingaswami Bhavan, New Delhi, India
| | - Kamaraju Raghavendra
- ICMR-National Institute of Malaria Research (NIMR), Sector-8, Dwarka, Delhi, India
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17
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Nejati J, Saghafipour A, Vatandoost H, Moosa-Kazemi SH, Motevalli Haghi A, Sanei-Dehkordi A. Bionomics of Anopheles subpictus (Diptera: Culicidae) in a Malaria Endemic Area, Southeastern Iran. JOURNAL OF MEDICAL ENTOMOLOGY 2018; 55:1182-1187. [PMID: 29873778 DOI: 10.1093/jme/tjy079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Indexed: 06/08/2023]
Abstract
Anopheles subpictus Grassi is considered a secondary malaria vector in parts of Asia. The current study determined some ecological and bionomical characteristics of this species in southeastern Iran. The temporal patterns of abundance, resting behavior, blood feeding activity, host selection, adult susceptibility to insecticides and larval habitats were investigated. Most adults were collected by pyrethrum space-spray collection, followed by pit shelters and outlet window traps, respectively. The abdominal condition index of gravid to blood fed females resting outdoors was more than one, thereby showing exophilic resting behavior. Only 25% of engorged females tested positive for human blood, even though most of the samples were collected from houses. The host seeking activity of An. subpictus was bimodal with peaks at 22-2300 h and 03-0400 h. Also, the relative abundance showed peaks in March and December. The results of susceptibility tests showed a resistance of field strains to DDT. Future studies are needed to investigate the possible role of this species in malaria transmission in southeastern Iran.
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Affiliation(s)
- Jalil Nejati
- Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
- Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Abedin Saghafipour
- Department of Public Health, Faculty of Health, Qom University of Medical Sciences, Qom, Iran
| | - Hassan Vatandoost
- Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
- Department of Environmental Chemical Pollutants and Pesticides, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Hassan Moosa-Kazemi
- Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Afsaneh Motevalli Haghi
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Sanei-Dehkordi
- Department of Medical Entomology and Vector Control, Faculty of Health & Infectious and Tropical Diseases Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
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18
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Mohanty AK, Nina PB, Ballav S, Vernekar S, Parkar S, D'souza M, Zuo W, Gomes E, Chery L, Tuljapurkar S, Valecha N, Rathod PK, Kumar A. Susceptibility of wild and colonized Anopheles stephensi to Plasmodium vivax infection. Malar J 2018; 17:225. [PMID: 29871629 PMCID: PMC5989471 DOI: 10.1186/s12936-018-2343-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 05/07/2018] [Indexed: 11/16/2022] Open
Abstract
Background As much as 80% of global Plasmodium vivax infections occur in South Asia and there is a shortage of direct studies on infectivity of P. vivax in Anopheles stephensi, the most common urban mosquito carrying human malaria. In this quest, the possible effects of laboratory colonization of mosquitoes on infectivity and development of P. vivax is of interest given that colonized mosquitoes can be genetically less divergent than the field population from which they originated. Methods Patient-derived P. vivax infected blood was fed to age-matched wild and colonized An. stephensi. Such a comparison requires coordinated availability of same-age wild and colonized mosquito populations. Here, P. vivax infection are studied in colonized An. stephensi in their 66th–86th generation and fresh field-caught An. stephensi. Wild mosquitoes were caught as larvae and pupae and allowed to develop into adult mosquitoes in the insectary. Parasite development to oocyst and sporozoite stages were assessed on days 7/8 and 12/13, respectively. Results While there were batch to batch variations in infectivity of individual patient-derived P. vivax samples, both wild and colonized An. stephensi were roughly equally susceptible to oocyst stage Plasmodium infection. At the level of sporozoite development, significantly more mosquitoes with sporozoite load of 4+ were seen in wild than in colonized populations.
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Affiliation(s)
- Ajeet Kumar Mohanty
- National Institute of Malaria Research, Field Unit, Campal, Goa, 403001, India
| | - Praveen Balabaskaran Nina
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA.,Department of Epidemiology and Public Health, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu, 610005, India
| | - Shuvankar Ballav
- National Institute of Malaria Research, Field Unit, Campal, Goa, 403001, India
| | - Smita Vernekar
- National Institute of Malaria Research, Field Unit, Campal, Goa, 403001, India
| | - Sushma Parkar
- National Institute of Malaria Research, Field Unit, Campal, Goa, 403001, India
| | - Maria D'souza
- National Institute of Malaria Research, Field Unit, Campal, Goa, 403001, India
| | - Wenyun Zuo
- Department of Biology, Stanford University, Stanford, CA, 94305, USA
| | - Edwin Gomes
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Laura Chery
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA
| | | | - Neena Valecha
- National Institute of Malaria Research (ICMR), Sector 8, Dwarka, New Delhi, 110077, India
| | - Pradipsinh K Rathod
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA
| | - Ashwani Kumar
- National Institute of Malaria Research, Field Unit, Campal, Goa, 403001, India.
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19
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Sreenivasamurthy SK, Madugundu AK, Patil AH, Dey G, Mohanty AK, Kumar M, Patel K, Wang C, Kumar A, Pandey A, Prasad TSK. Mosquito-Borne Diseases and Omics: Tissue-Restricted Expression and Alternative Splicing Revealed by Transcriptome Profiling of Anopheles stephensi. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2017; 21:488-497. [PMID: 28708456 DOI: 10.1089/omi.2017.0073] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Malaria is one of the most debilitating mosquito-borne diseases with high global health burdens. While much of the research on malaria and mosquito-borne diseases is focused on Africa, Southeast Asia accounts for a sizable portion of the global burden of malaria. Moreover, about 50% of the Asian malaria incidence and deaths have been from India. A promising development in this context is that the completion of genome sequence of Anopheles stephensi, a major malaria vector in Asia, offers new opportunities for global health innovation, including the progress in deciphering the vectorial ability of this mosquito species at a molecular level. Moving forward, tissue-based expression profiling would be the next obvious step in understanding gene functions of An. stephensi. We report in this article, to the best of our knowledge, the first in-depth study on tissue-based transcriptomic profile of four important organs (midgut, Malpighian tubules, fat body, and ovary) of adult female An. stephensi mosquitoes. In all, we identified over 20,000 transcripts corresponding to more than 12,000 gene loci from these four tissues. We present and discuss the tissue-based expression profiles of majority of annotated transcripts in An. stephensi genome, and the dynamics of their alternative splicing in these tissues, in this study. The domain-based Gene Ontology analysis of the differentially expressed transcripts in each of the mosquito tissue indicated enrichment of transcripts with proteolytic activity in midgut; transporter activity in Malpighian tubules; cell cycle, DNA replication, and repair activities in ovaries; and oxidoreductase activities in fat body. Tissue-based study of transcript expression and gene functions markedly enhances our understanding of this important malaria vector, and in turn, offers rationales for further studies on vectorial ability and identification of novel molecular targets to intercept malaria transmission.
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Affiliation(s)
| | - Anil K Madugundu
- 1 Institute of Bioinformatics , Bangalore, India .,3 Centre for Bioinformatics, Pondicherry University , Kalapet, India
| | - Arun H Patil
- 1 Institute of Bioinformatics , Bangalore, India .,4 YU-IOB Center for Systems Biology and Molecular Medicine, Yenepoya University , Mangalore, India .,5 School of Biotechnology, KIIT University , Bhubaneswar, India
| | - Gourav Dey
- 1 Institute of Bioinformatics , Bangalore, India .,2 Manipal University , Manipal, India
| | - Ajeet Kumar Mohanty
- 6 National Institute of Malaria Research , Field Station, Panjim, India .,7 Department of Zoology, Goa University , Taleigao Plateau, India
| | - Manish Kumar
- 1 Institute of Bioinformatics , Bangalore, India .,2 Manipal University , Manipal, India
| | - Krishna Patel
- 1 Institute of Bioinformatics , Bangalore, India .,8 Amrita School of Biotechnology , Amrita Vishwa Vidyapeetham, Kollam, India
| | - Charles Wang
- 9 Center for Genomics and Department of Basic Sciences, School of Medicine, Loma Linda University , Loma Linda, California
| | - Ashwani Kumar
- 6 National Institute of Malaria Research , Field Station, Panjim, India
| | - Akhilesh Pandey
- 1 Institute of Bioinformatics , Bangalore, India .,10 McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine , Baltimore, Maryland.,11 Department of Biological Chemistry, Johns Hopkins University School of Medicine , Baltimore, Maryland.,12 Department of Oncology, Johns Hopkins University School of Medicine , Baltimore, Maryland.,13 Department of Pathology, Johns Hopkins University School of Medicine , Baltimore, Maryland
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20
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Balabaskaran Nina P, Mohanty AK, Ballav S, Vernekar S, Bhinge S, D'souza M, Walke J, Manoharan SK, Mascarenhas A, Gomes E, Chery L, Valecha N, Kumar A, Rathod PK. Dynamics of Plasmodium vivax sporogony in wild Anopheles stephensi in a malaria-endemic region of Western India. Malar J 2017; 16:284. [PMID: 28693607 PMCID: PMC5504555 DOI: 10.1186/s12936-017-1931-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 07/04/2017] [Indexed: 11/16/2022] Open
Abstract
Background In global efforts to track mosquito infectivity and parasite elimination, controlled mosquito-feeding experiments can help in understanding the dynamics of parasite development in vectors. Anopheles stephensi is often accepted as the major urban malaria vector that transmits Plasmodium in Goa and elsewhere in South Asia. However, much needs to be learned about the interactions of Plasmodium vivax with An. stephensi. As a component of the US NIH International Center of Excellence for Malaria Research (ICEMR) for Malaria Evolution in South Asia (MESA), a series of membrane-feeding experiments with wild An. stephensi and P. vivax were carried out to better understand this vector-parasite interaction. Methods Wild An. stephensi larvae and pupae were collected from curing water in construction sites in the city of Ponda, Goa, India. The larvae and pupae were reared at the MESA ICEMR insectary within the National Institute of Malaria Research (NIMR) field unit in Goa until they emerged into adult mosquitoes. Blood for membrane-feeding experiments was obtained from malaria patients at the local Goa Medical College and Hospital who volunteered for the study. Parasites were counted by Miller reticule technique and correlation between gametocytaemia/parasitaemia and successful mosquito infection was studied. Results A weak but significant correlation was found between patient blood gametocytaemia/parasitaemia and mosquito oocyst load. No correlation was observed between gametocytaemia/parasitaemia and oocyst infection rates, and between gametocyte sex ratio and oocyst load. When it came to development of the parasite in the mosquito, a strong positive correlation was observed between oocyst midgut levels and sporozoite infection rates, and between oocyst levels and salivary gland sporozoite loads. Kinetic studies showed that sporozoites appeared in the salivary gland as early as day 7, post-infection. Conclusions This is the first study in India to carry out membrane-feeding experiments with wild An. stephensi and P. vivax. A wide range of mosquito infection loads and infection rates were observed, pointing to a strong interplay between parasite, vector and human factors. Most of the present observations are in agreement with feeding experiments conducted with P. vivax elsewhere in the world. Electronic supplementary material The online version of this article (doi:10.1186/s12936-017-1931-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | - Ajeet Kumar Mohanty
- National Institute of Malaria Research, Field Unit, Campal, Goa, 403001, India
| | - Shuvankar Ballav
- National Institute of Malaria Research, Field Unit, Campal, Goa, 403001, India
| | - Smita Vernekar
- National Institute of Malaria Research, Field Unit, Campal, Goa, 403001, India
| | - Sushma Bhinge
- National Institute of Malaria Research, Field Unit, Campal, Goa, 403001, India
| | - Maria D'souza
- National Institute of Malaria Research, Field Unit, Campal, Goa, 403001, India
| | - Jayashree Walke
- Departments of Chemistry and of Global Health, University of Washington, Seattle, WA, 98195, USA.,Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Suresh Kumar Manoharan
- Departments of Chemistry and of Global Health, University of Washington, Seattle, WA, 98195, USA.,Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Anjali Mascarenhas
- Departments of Chemistry and of Global Health, University of Washington, Seattle, WA, 98195, USA.,Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Edwin Gomes
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Laura Chery
- Departments of Chemistry and of Global Health, University of Washington, Seattle, WA, 98195, USA
| | - Neena Valecha
- National Institute of Malaria Research (ICMR), Sector 8, Dwarka, New Delhi, 110077, India
| | - Ashwani Kumar
- National Institute of Malaria Research, Field Unit, Campal, Goa, 403001, India
| | - Pradipsinh K Rathod
- Departments of Chemistry and of Global Health, University of Washington, Seattle, WA, 98195, USA.
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21
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Resting and feeding preferences of Anopheles stephensi in an urban setting, perennial for malaria. Malar J 2017; 16:111. [PMID: 28283033 PMCID: PMC5346253 DOI: 10.1186/s12936-017-1764-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 02/28/2017] [Indexed: 11/20/2022] Open
Abstract
Background The Indian city of Chennai is endemic for malaria and the known local malaria vector is Anopheles stephensi. Plasmodium vivax is the predominant malaria parasite species, though Plasmodium falciparum is present at low levels. The urban ecotype of malaria prevails in Chennai with perennial transmission despite vector surveillance by the Urban Malaria Scheme (UMS) of the National Vector Borne Disease Control Programme (NVBDCP). Understanding the feeding and resting preferences, together with the transmission potential of adult vectors in the area is essential in effective planning and execution of improved vector control measures. Methods A yearlong survey was carried out in cattle sheds and human dwellings to check the resting, feeding preferences and transmission potential of An. stephensi. The gonotrophic status, age structure, resting and host seeking preferences were studied. The infection rate in An. stephensi and Anopheles subpictus were analysed by circumsporozoite ELISA (CS-ELISA). Results Adult vectors were found more frequently and at higher densities in cattle sheds than human dwellings. The overall Human Blood Index (HBI) was 0.009 indicating the vectors to be strongly zoophilic. Among the vectors collected from human dwellings, 94.2% were from thatched structures and the remaining 5.8% from tiled and asbestos structures. 57.75% of the dissected vectors were nulliparous whereas, 35.83% were monoparous and the rest 6.42% biparous. Sporozoite positivity rate was 0.55% (4/720) and 1.92% (1/52) for An. stephensi collected from cattle sheds and human dwellings, respectively. One adult An. subpictus (1/155) was also found to be infected with P. falciparum. Conclusions Control of the adult vector populations can be successful only by understanding the resting and feeding preferences. The present study indicates that adult vectors predominantly feed on cattle and cattle sheds are the preferred resting place, possibly due to easy availability of blood meal source and lack of any insecticide or repellent pressure. Hence targeting these resting sites with cost effective, socially acceptable intervention tools, together with effective larval source management to reduce vector breeding, could provide an improved integrated vector management strategy to help drive down malaria transmission and assist in India’s plan to eliminate malaria by 2030.
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22
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Chery L, Maki JN, Mascarenhas A, Walke JT, Gawas P, Almeida A, Fernandes M, Vaz M, Ramanan R, Shirodkar D, Bernabeu M, Manoharan SK, Pereira L, Dash R, Sharma A, Shaik RB, Chakrabarti R, Babar P, White J, Mudeppa DG, Kumar S, Zuo W, Skillman KM, Kanjee U, Lim C, Shaw-Saliba K, Kumar A, Valecha N, Jindal VN, Khandeparkar A, Naik P, Amonkar S, Duraisingh MT, Tuljapurkar S, Smith JD, Dubhashi N, Pinto RGW, Silveria M, Gomes E, Rathod PK. Demographic and clinical profiles of Plasmodium falciparum and Plasmodium vivax patients at a tertiary care centre in southwestern India. Malar J 2016; 15:569. [PMID: 27884146 PMCID: PMC5123287 DOI: 10.1186/s12936-016-1619-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 11/15/2016] [Indexed: 01/11/2023] Open
Abstract
Background Malaria remains an important cause of morbidity and mortality in India. Though many comprehensive studies have been carried out in Africa and Southeast Asia to characterize and examine determinants of Plasmodium falciparum and Plasmodium vivax malaria pathogenesis, fewer have been conducted in India. Methods A prospective study of malaria-positive individuals was conducted at Goa Medical College and Hospital (GMC) from 2012 to 2015 to identify demographic, diagnostic and clinical indicators associated with P. falciparum and P. vivax infection on univariate analysis. Results Between 2012 and 2015, 74,571 febrile individuals, 6287 (8.4%) of whom were malaria positive, presented to GMC. The total number of malaria cases at GMC increased more than two-fold over four years, with both P. vivax and P. falciparum cases present year-round. Some 1116 malaria-positive individuals (mean age = 27, 91% male), 88.2% of whom were born outside of Goa and 51% of whom were construction workers, were enroled in the study. Of 1088 confirmed malaria-positive patients, 77.0% had P. vivax, 21.0% had P. falciparum and 2.0% had mixed malaria. Patients over 40 years of age and with P. falciparum infection were significantly (p < 0.001) more likely to be hospitalised than younger and P. vivax patients, respectively. While approximately equal percentages of hospitalised P. falciparum (76.6%) and P. vivax (78.9%) cases presented with at least one WHO severity indicator, a greater percentage of P. falciparum inpatients presented with at least two (43.9%, p < 0.05) and at least three (29.9%, p < 0.01) severity features. There were six deaths among the 182 hospitalised malaria positive patients, all of whom had P. falciparum. Conclusion During the four year study period at GMC, the number of malaria cases increased substantially and the greatest burden of severe disease was contributed by P. falciparum.
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Affiliation(s)
- Laura Chery
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA
| | - Jennifer N Maki
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA
| | - Anjali Mascarenhas
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA.,Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Jayashri T Walke
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA.,Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Pooja Gawas
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA.,Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Anvily Almeida
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA.,Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Mezia Fernandes
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA.,Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Marina Vaz
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Rakesh Ramanan
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | | | - Maria Bernabeu
- Center for Infectious Disease Research (CIDR), Seattle, WA, 98109, USA
| | - Suresh Kumar Manoharan
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA.,Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Ligia Pereira
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA.,Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Rashmi Dash
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA.,Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Ambika Sharma
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA.,Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Riaz Basha Shaik
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA.,Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Rimi Chakrabarti
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA.,Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Prasad Babar
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA.,Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - John White
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA
| | - Devaraja G Mudeppa
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA
| | - Shiva Kumar
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA
| | - Wenyun Zuo
- Department of Biology, Stanford University, Stanford, CA, 94305, USA
| | - Kristen M Skillman
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Usheer Kanjee
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Caeul Lim
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Kathryn Shaw-Saliba
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Ashwani Kumar
- National Institute of Malaria Research, Field Unit, Campal, Goa, 403001, India
| | - Neena Valecha
- National Institute of Malaria Research (ICMR), Sector 8, Dwarka, New Delhi, 110077, India
| | - V N Jindal
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | | | - Pradeep Naik
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Sunanda Amonkar
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Manoj T Duraisingh
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, 02115, USA
| | | | - Joseph D Smith
- Center for Infectious Disease Research (CIDR), Seattle, WA, 98109, USA
| | - Nagesh Dubhashi
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Roque G W Pinto
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Maria Silveria
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Edwin Gomes
- Goa Medical College and Hospital, Bambolim, Goa, 403202, India
| | - Pradipsinh K Rathod
- Departments of Chemistry and Global Health, University of Washington, Seattle, WA, 98195, USA.
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