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Schilling AK, Mazzamuto MV, Romeo C. A Review of Non-Invasive Sampling in Wildlife Disease and Health Research: What's New? Animals (Basel) 2022; 12:1719. [PMID: 35804619 PMCID: PMC9265025 DOI: 10.3390/ani12131719] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/28/2022] [Accepted: 06/29/2022] [Indexed: 12/14/2022] Open
Abstract
In the last decades, wildlife diseases and the health status of animal populations have gained increasing attention from the scientific community as part of a One Health framework. Furthermore, the need for non-invasive sampling methods with a minimal impact on wildlife has become paramount in complying with modern ethical standards and regulations, and to collect high-quality and unbiased data. We analysed the publication trends on non-invasive sampling in wildlife health and disease research and offer a comprehensive review on the different samples that can be collected non-invasively. We retrieved 272 articles spanning from 1998 to 2021, with a rapid increase in number from 2010. Thirty-nine percent of the papers were focussed on diseases, 58% on other health-related topics, and 3% on both. Stress and other physiological parameters were the most addressed research topics, followed by viruses, helminths, and bacterial infections. Terrestrial mammals accounted for 75% of all publications, and faeces were the most widely used sample. Our review of the sampling materials and collection methods highlights that, although the use of some types of samples for specific applications is now consolidated, others are perhaps still underutilised and new technologies may offer future opportunities for an even wider use of non-invasively collected samples.
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Affiliation(s)
- Anna-Katarina Schilling
- Previously Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK;
| | - Maria Vittoria Mazzamuto
- Haub School of Environment and Natural Resources, University of Wyoming, 1000 E. University Ave., Laramie, WY 82072, USA;
- Department of Theoretical and Applied Sciences, University of Insubria, Via J.H. Dunant 3, 21100 Varese, Italy
| | - Claudia Romeo
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), Via Bianchi 9, 25124 Brescia, Italy
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2
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Zimmermann F, Köhler SM, Nowak K, Dupke S, Barduhn A, Düx A, Lang A, De Nys HM, Gogarten JF, Grunow R, Couacy-Hymann E, Wittig RM, Klee SR, Leendertz FH. Low antibody prevalence against Bacillus cereus biovar anthracis in Taï National Park, Côte d'Ivoire, indicates high rate of lethal infections in wildlife. PLoS Negl Trop Dis 2017; 11:e0005960. [PMID: 28934219 PMCID: PMC5626515 DOI: 10.1371/journal.pntd.0005960] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 10/03/2017] [Accepted: 09/12/2017] [Indexed: 11/18/2022] Open
Abstract
Bacillus cereus biovar anthracis (Bcbva) is a member of the B. cereus group which carries both B. anthracis virulence plasmids, causes anthrax-like disease in various wildlife species and was described in several sub-Saharan African rainforests. Long-term monitoring of carcasses in Taï National Park, Côte d'Ivoire, revealed continuous wildlife mortality due to Bcbva in a broad range of mammalian species. While non-lethal anthrax infections in wildlife have been described for B. anthracis, nothing is known about the odds of survival following an anthrax infection caused by Bcbva. To address this gap, we present the results of a serological study of anthrax in five wildlife species known to succumb to Bcbva in this ecosystem. Specific antibodies were only detected in two out of 15 wild red colobus monkeys (Procolobus badius) and one out of 10 black-and-white colobus monkeys (Colobus polykomos), but in none of 16 sooty mangabeys (Cercocebus atys), 9 chimpanzees (Pan troglodytes verus) and 9 Maxwell's duikers (Cephalophus maxwellii). The combination of high mortality and low antibody detection rates indicates high virulence of this disease across these different mammalian species.
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Affiliation(s)
- Fee Zimmermann
- Robert Koch Institute, P3: “Epidemiology of Highly Pathogenic Microorganisms", Seestraße 10, Berlin, Germany
- Robert Koch Institute, ZBS 2: Centre for Biological Threats and Special Pathogens, Highly Pathogenic Microorganisms, Seestraße 10, Berlin, Germany
| | - Susanne M. Köhler
- Robert Koch Institute, P3: “Epidemiology of Highly Pathogenic Microorganisms", Seestraße 10, Berlin, Germany
| | - Kathrin Nowak
- Robert Koch Institute, P3: “Epidemiology of Highly Pathogenic Microorganisms", Seestraße 10, Berlin, Germany
| | - Susann Dupke
- Robert Koch Institute, ZBS 2: Centre for Biological Threats and Special Pathogens, Highly Pathogenic Microorganisms, Seestraße 10, Berlin, Germany
| | - Anne Barduhn
- Robert Koch Institute, ZBS 2: Centre for Biological Threats and Special Pathogens, Highly Pathogenic Microorganisms, Seestraße 10, Berlin, Germany
| | - Ariane Düx
- Robert Koch Institute, P3: “Epidemiology of Highly Pathogenic Microorganisms", Seestraße 10, Berlin, Germany
| | - Alexander Lang
- Robert Koch Institute, P3: “Epidemiology of Highly Pathogenic Microorganisms", Seestraße 10, Berlin, Germany
| | - Hélène M. De Nys
- Robert Koch Institute, P3: “Epidemiology of Highly Pathogenic Microorganisms", Seestraße 10, Berlin, Germany
| | - Jan F. Gogarten
- Robert Koch Institute, P3: “Epidemiology of Highly Pathogenic Microorganisms", Seestraße 10, Berlin, Germany
- Department of Biology, McGill University, Montreal, QC, Canada
- Primatology Department, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, Leipzig, Germany
| | - Roland Grunow
- Robert Koch Institute, ZBS 2: Centre for Biological Threats and Special Pathogens, Highly Pathogenic Microorganisms, Seestraße 10, Berlin, Germany
| | | | - Roman M. Wittig
- Primatology Department, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, Leipzig, Germany
- Taï Chimpanzee Project, Centre Suisse de Recherches Scientifiques, Abidjan 01, Côte d’Ivoire
| | - Silke R. Klee
- Robert Koch Institute, ZBS 2: Centre for Biological Threats and Special Pathogens, Highly Pathogenic Microorganisms, Seestraße 10, Berlin, Germany
| | - Fabian H. Leendertz
- Robert Koch Institute, P3: “Epidemiology of Highly Pathogenic Microorganisms", Seestraße 10, Berlin, Germany
- * E-mail:
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Bushmeat Hunting and Zoonotic Transmission of Simian T-Lymphotropic Virus 1 in Tropical West and Central Africa. J Virol 2017; 91:JVI.02479-16. [PMID: 28298599 DOI: 10.1128/jvi.02479-16] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 02/21/2017] [Indexed: 01/04/2023] Open
Abstract
Simian T-lymphotropic virus 1 (STLV-1) enters human populations through contact with nonhuman primate (NHP) bushmeat. We tested whether differences in the extent of contact with STLV-1-infected NHP bushmeat foster regional differences in prevalence of human T-lymphotropic virus 1 (HTLV-1). Using serological and PCR assays, we screened humans and NHPs at two Sub-Saharan African sites where subsistence hunting was expected to be less (Taï region, Côte d'Ivoire [CIV]) or more (Bandundu region, Democratic Republic of the Congo [DRC]) developed. Only 0.7% of human participants were infected with HTLV-1 in CIV (n = 574), and 1.3% of humans were infected in DRC (n = 302). Two of the Ivorian human virus sequences were closely related to simian counterparts, indicating ongoing zoonotic transmission. Multivariate analysis of human demographic parameters and behavior confirmed that participants from CIV were less often exposed to NHPs than participants from DRC through direct contact, e.g., butchering. At the same time, numbers of STLV-1-infected NHPs were higher in CIV (39%; n = 111) than in DRC (23%; n = 39). We conclude that similar ultimate risks of zoonotic STLV-1 transmission-defined as the product of prevalence in local NHP and human rates of contact to fresh NHP carcasses-contribute to the observed comparable rates of HTLV-1 infection in humans in CIV and DRC. We found that young adult men and mature women are most likely exposed to NHPs at both sites. In view of the continued difficulties in controlling zoonotic disease outbreaks, the identification of such groups at high risk of NHP exposure may guide future prevention efforts.IMPORTANCE Multiple studies report a high risk for zoonotic transmission of blood-borne pathogens like retroviruses through contact with NHPs, and this risk seems to be particularly high in tropical Africa. Here, we reveal high levels of exposure to NHP bushmeat in two regions of Western and Central tropical Africa. We provide evidence for continued zoonotic origin of HTLV-1 in humans at CIV, and we found that young men and mature women represent risk groups for zoonotic transmission of pathogens from NHPs. Identifying such risk groups can contribute to mitigation of not only zoonotic STLV-1 transmission but also transmission of any blood-borne pathogen onto humans in Sub-Saharan Africa.
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Reid MJC, Switzer WM, Schillaci MA, Ragonnet-Cronin M, Joanisse I, Caminiti K, Lowenberger CA, Galdikas BMF, Sandstrom PA, Brooks JI. Detailed phylogenetic analysis of primate T-lymphotropic virus type 1 (PTLV-1) sequences from orangutans (Pongo pygmaeus) reveals new insights into the evolutionary history of PTLV-1 in Asia. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2016; 43:434-50. [PMID: 27245152 PMCID: PMC11332081 DOI: 10.1016/j.meegid.2016.05.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 04/28/2016] [Accepted: 05/26/2016] [Indexed: 12/13/2022]
Abstract
While human T-lymphotropic virus type 1 (HTLV-1) originates from ancient cross-species transmission of simian T-lymphotropic virus type 1 (STLV-1) from infected nonhuman primates, much debate exists on whether the first HTLV-1 occurred in Africa, or in Asia during early human evolution and migration. This topic is complicated by a lack of representative Asian STLV-1 to infer PTLV-1 evolutionary histories. In this study we obtained new STLV-1 LTR and tax sequences from a wild-born Bornean orangutan (Pongo pygmaeus) and performed detailed phylogenetic analyses using both maximum likelihood and Bayesian inference of available Asian PTLV-1 and African STLV-1 sequences. Phylogenies, divergence dates and nucleotide substitution rates were co-inferred and compared using six different molecular clock calibrations in a Bayesian framework, including both archaeological and/or nucleotide substitution rate calibrations. We then combined our molecular results with paleobiogeographical and ecological data to infer the most likely evolutionary history of PTLV-1. Based on the preferred models our analyses robustly inferred an Asian source for PTLV-1 with cross-species transmission of STLV-1 likely from a macaque (Macaca sp.) to an orangutan about 37.9-48.9kya, and to humans between 20.3-25.5kya. An orangutan diversification of STLV-1 commenced approximately 6.4-7.3kya. Our analyses also inferred that HTLV-1 was first introduced into Australia ~3.1-3.7kya, corresponding to both genetic and archaeological changes occurring in Australia at that time. Finally, HTLV-1 appears in Melanesia at ~2.3-2.7kya corresponding to the migration of the Lapita peoples into the region. Our results also provide an important future reference for calibrating information essential for PTLV evolutionary timescale inference. Longer sequence data, or full genomes from a greater representation of Asian primates, including gibbons, leaf monkeys, and Sumatran orangutans are needed to fully elucidate these evolutionary dates and relationships using the model criteria suggested herein.
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Affiliation(s)
- Michael J C Reid
- Department of Anthropology, University of Toronto Scarborough, 1265 Military Trail, Scarborough, Ontario M1C 1A4, Canada; Department of Anthropology, University of Toronto, 19 Russell Street, Toronto, Ontario M5S 2S2, Canada.
| | - William M Switzer
- Laboratory Branch, Division of HIV/AIDS Prevention, Center for Disease Control and Prevention, Atlanta, GA, USA 30329.
| | - Michael A Schillaci
- Department of Anthropology, University of Toronto Scarborough, 1265 Military Trail, Scarborough, Ontario M1C 1A4, Canada; Department of Anthropology, University of Toronto, 19 Russell Street, Toronto, Ontario M5S 2S2, Canada.
| | - Manon Ragonnet-Cronin
- Institute of Evolutionary Biology, University of Edinburgh, Ashworth Laboratories, West Mains Road, Edinburgh EH9 3JT, United Kingdom.
| | - Isabelle Joanisse
- National HIV & Retrovirology Laboratories, JC Wilt Infectious Diseases Research Centre, National Microbiology Laboratory, Public Health Agency of Canada, 745 Logan Avenue, Winnipeg, Manitoba, R3E 3L5, Canada
| | - Kyna Caminiti
- Centre for Biosecurity, Public Health Agency of Canada, 100 Colonnade Road, Ottawa, Ontario, Canada.
| | - Carl A Lowenberger
- Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada.
| | - Birute Mary F Galdikas
- Department of Archaeology, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada; Orangutan Foundation International, 824 S. Wellesley Ave., Los Angeles, CA 90049, USA.
| | - Paul A Sandstrom
- National HIV & Retrovirology Laboratories, JC Wilt Infectious Diseases Research Centre, National Microbiology Laboratory, Public Health Agency of Canada, Ottawa, Ontario, Canada.
| | - James I Brooks
- National HIV & Retrovirology Laboratories, JC Wilt Infectious Diseases Research Centre, National Microbiology Laboratory, Public Health Agency of Canada, 745 Logan Avenue, Winnipeg, Manitoba, R3E 3L5, Canada.
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5
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Smiley Evans T, Gilardi KVK, Barry PA, Ssebide BJ, Kinani JF, Nizeyimana F, Noheri JB, Byarugaba DK, Mudakikwa A, Cranfield MR, Mazet JAK, Johnson CK. Detection of viruses using discarded plants from wild mountain gorillas and golden monkeys. Am J Primatol 2016; 78:1222-1234. [PMID: 27331804 DOI: 10.1002/ajp.22576] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 06/03/2016] [Accepted: 06/04/2016] [Indexed: 01/03/2023]
Abstract
Infectious diseases pose one of the most significant threats to the survival of great apes in the wild. The critically endangered mountain gorilla (Gorilla beringei beringei) is at high risk for contracting human pathogens because approximately 60% of the population is habituated to humans to support a thriving ecotourism program. Disease surveillance for human and non-human primate pathogens is important for population health and management of protected primate species. Here, we evaluate discarded plants from mountain gorillas and sympatric golden monkeys (Cercopithecus mitis kandti), as a novel biological sample to detect viruses that are shed orally. Discarded plant samples were tested for the presence of mammalian-specific genetic material and two ubiquitous DNA and RNA primate viruses, herpesviruses, and simian foamy virus. We collected discarded plant samples from 383 wild human-habituated mountain gorillas and from 18 habituated golden monkeys. Mammalian-specific genetic material was recovered from all plant species and portions of plant bitten or chewed by gorillas and golden monkeys. Gorilla herpesviral DNA was most consistently recovered from plants in which leafy portions were eaten by gorillas. Simian foamy virus nucleic acid was recovered from plants discarded by golden monkeys, indicating that it is also possible to detect RNA viruses from bitten or chewed plants. Our findings show that discarded plants are a useful non-invasive sampling method for detection of viruses that are shed orally in mountain gorillas, sympatric golden monkeys, and potentially other species. This method of collecting specimens from discarded plants is a new non-invasive sampling protocol that can be combined with collection of feces and urine to evaluate the most common routes of viral shedding in wild primates. Am. J. Primatol. 78:1222-1234, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Tierra Smiley Evans
- Gorilla Doctors, Karen C. Drayer Wildlife Health Center, School of Veterinary Medicine, University of California, Davis, California.
| | - Kirsten V K Gilardi
- Gorilla Doctors, Karen C. Drayer Wildlife Health Center, School of Veterinary Medicine, University of California, Davis, California
| | - Peter A Barry
- California National Primate Research Center, Center for Comparative Medicine, University of California, Davis, California
| | | | | | - Fred Nizeyimana
- Gorilla Doctors, Mountain Gorilla Veterinary Project, Inc., Davis, California
| | - Jean Bosco Noheri
- Gorilla Doctors, Mountain Gorilla Veterinary Project, Inc., Davis, California
| | | | | | - Michael R Cranfield
- Gorilla Doctors, Karen C. Drayer Wildlife Health Center, School of Veterinary Medicine, University of California, Davis, California
| | - Jonna A K Mazet
- Gorilla Doctors, Karen C. Drayer Wildlife Health Center, School of Veterinary Medicine, University of California, Davis, California
| | - Christine K Johnson
- Gorilla Doctors, Karen C. Drayer Wildlife Health Center, School of Veterinary Medicine, University of California, Davis, California
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6
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Mossoun A, Pauly M, Akoua-Koffi C, Couacy-Hymann E, Leendertz SAJ, Anoh AE, Gnoukpoho AH, Leendertz FH, Schubert G. Contact to Non-human Primates and Risk Factors for Zoonotic Disease Emergence in the Taï Region, Côte d'Ivoire. ECOHEALTH 2015; 12:580-91. [PMID: 26302959 DOI: 10.1007/s10393-015-1056-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 07/23/2015] [Accepted: 07/31/2015] [Indexed: 05/25/2023]
Abstract
Elevated exposure levels to non-human primates (NHP) and NHP bushmeat represent major risk factors for zoonotic disease transmission in sub-Saharan Africa. Demography can affect personal nutritional behavior, and thus rates of contact to NHP bushmeat. Here, we analyzed demographic and NHP contact data from 504 participants of differing demographic backgrounds living in proximity to the Taï National Park in Western Côte d'Ivoire (CI) to identify factors impacting the risk of NHP exposure. Overall, participants' contact rates to NHP were high, and increased along a gradient of bushmeat processing (e.g., 7.7% hunted, but 61.9% consumed monkeys). Contact to monkeys was significantly more frequent than to chimpanzees, most likely a reflection of meat availability and hunting effort. 17.2% of participants reported previous interaction with NHP pets. Generalized linear mixed model analysis revealed significant effects of sex, country of birth or ethnicity on rates of NHP bushmeat contact, with male participants from CI being at particular risk of exposure to NHP. The presence of zoonotic pathogens in humans and NHP in Taï further highlights the risk for zoonotic disease emergence in this region. Our results are relevant for formulating prevention strategies to reduce zoonotic pathogen burden in tropical Africa.
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Affiliation(s)
- Arsène Mossoun
- Laboratoire National d`appui au Développement Agricole/Laboratoire Central de Pathologie Animale, 206, Bingerville, Côte d'Ivoire
- Université Felix Houphouët Boigny, 01 BP V34, Abidjan, Côte d'Ivoire
| | - Maude Pauly
- Project Group "Epidemiology of Highly Pathogenic Microorganisms", Robert Koch Institute, Nordufer 20, 13353, Berlin, Germany.
- Department of Infection and Immunity, Luxembourg Institute of Health, 29, rue Henri Koch, 4354, Esch-Sur-Alzette, Luxembourg.
| | - Chantal Akoua-Koffi
- Centre de Recherche pour le Développement, Université Alassane Ouattara of Bouaké, 01 BP V18, Bouaké, Côte d'Ivoire
| | - Emmanuel Couacy-Hymann
- Laboratoire National d`appui au Développement Agricole/Laboratoire Central de Pathologie Animale, 206, Bingerville, Côte d'Ivoire
| | - Siv Aina J Leendertz
- Project Group "Epidemiology of Highly Pathogenic Microorganisms", Robert Koch Institute, Nordufer 20, 13353, Berlin, Germany
| | - Augustin E Anoh
- Laboratoire National d`appui au Développement Agricole/Laboratoire Central de Pathologie Animale, 206, Bingerville, Côte d'Ivoire
- Centre de Recherche pour le Développement, Université Alassane Ouattara of Bouaké, 01 BP V18, Bouaké, Côte d'Ivoire
| | - Ange H Gnoukpoho
- Laboratoire National d`appui au Développement Agricole/Laboratoire Central de Pathologie Animale, 206, Bingerville, Côte d'Ivoire
- Centre de Recherche pour le Développement, Université Alassane Ouattara of Bouaké, 01 BP V18, Bouaké, Côte d'Ivoire
| | - Fabian H Leendertz
- Project Group "Epidemiology of Highly Pathogenic Microorganisms", Robert Koch Institute, Nordufer 20, 13353, Berlin, Germany
| | - Grit Schubert
- Project Group "Epidemiology of Highly Pathogenic Microorganisms", Robert Koch Institute, Nordufer 20, 13353, Berlin, Germany
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Rushmore J, Allison AB, Edwards EE, Bagal U, Altizer S, Cranfield MR, Glenn TC, Liu H, Mudakikwa A, Mugisha L, Muller MN, Stumpf RM, Thompson ME, Wrangham R, Yabsley MJ. Screening wild and semi-free ranging great apes for putative sexually transmitted diseases: Evidence of Trichomonadidae infections. Am J Primatol 2015; 77:1075-85. [PMID: 26119266 DOI: 10.1002/ajp.22442] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Accepted: 06/02/2015] [Indexed: 11/07/2022]
Abstract
Sexually transmitted diseases (STDs) can persist endemically, are known to cause sterility and infant mortality in humans, and could have similar impacts in wildlife populations. African apes (i.e., chimpanzees, bonobos, and to a lesser extent gorillas) show multi-male mating behavior that could offer opportunities for STD transmission, yet little is known about the prevalence and impact of STDs in this endangered primate group. We used serology and PCR-based detection methods to screen biological samples from wild and orphaned eastern chimpanzees and gorillas (N = 172 individuals, including adults, and juveniles) for four classes of pathogens that either commonly cause human STDs or were previously detected in captive apes: trichomonads, Chlamydia spp., Treponema pallidum (syphilis and yaws), and papillomaviruses. Based on results from prior modeling and comparative research, we expected STD prevalence to be highest in females versus males and in sexually mature versus immature individuals. All samples were negative for Chlamydia, Treponema pallidum, and papillomaviruses; however, a high percentage of wild chimpanzee urine and fecal samples showed evidence of trichomonads (protozoa). Analysis revealed that females were more likely than males to have positive urine-but not fecal-samples; however, there was no evidence of age (sexual maturity) differences in infection status. Sequence analysis of chimpanzee trichomonad samples revealed a close relationship to previously described trichomonads within the genus Tetratrichomonas. Phylogenetic comparisons to archived sequences from multiple vertebrate hosts suggests that many of the chimpanzee parasites from our study are likely transmitted via fecal-oral contact, but the transmission of some Tetratrichomonas sequence-types remains unknown and could include sexual contact. Our work emphasizes that only a fraction of infectious agents affecting wild apes are presently known to science, and that further work on great ape STDs could offer insights for the management of endangered great apes and for understanding human STD origins.
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Affiliation(s)
- Julie Rushmore
- Odum School of Ecology, The University of Georgia, Athens, Georgia
- College of Veterinary Medicine, The University of Georgia, Athens, Georgia
| | - Andrew B Allison
- Baker Institute for Animal Health, Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York
| | - Erin E Edwards
- College of Veterinary Medicine, The University of Georgia, Athens, Georgia
| | - Ujwal Bagal
- Institute of Bioinformatics, The University of Georgia, Athens, Georgia
| | - Sonia Altizer
- Odum School of Ecology, The University of Georgia, Athens, Georgia
| | - Mike R Cranfield
- Gorilla Doctors, Wildlife Health Center, University of California Davis, Davis, California
- The Department of Molecular and Pathobiology, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Travis C Glenn
- Department of Environmental Health Science, The University of Georgia, Athens, Georgia
| | - Hsi Liu
- National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control, Athens, Georgia
| | - Antoine Mudakikwa
- Rwanda Development Board, Department of Tourism and Conservation, Kigali, Rwanda
| | - Lawrence Mugisha
- Conservation and Ecosystem Health Alliance (CEHA), Kampala, Uganda
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
| | - Martin N Muller
- Department of Anthropology, University of New Mexico, Albuquerque, New Mexico
| | - Rebecca M Stumpf
- Department of Anthropology, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | | | - Richard Wrangham
- Department of Human Evolutionary Biology, Harvard University, Cambridge, Massachusetts
| | - Michael J Yabsley
- Warnell School of Forestry and Natural Resources, The University of Georgia and the Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, The University of Georgia, Athens, Georgia
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8
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Modes of transmission of Simian T-lymphotropic Virus Type 1 in semi-captive mandrills (Mandrillus sphinx). Vet Microbiol 2015; 179:155-61. [PMID: 26143560 DOI: 10.1016/j.vetmic.2015.06.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 05/30/2015] [Accepted: 06/15/2015] [Indexed: 12/25/2022]
Abstract
Non-human primates (NHPs) often live in inaccessible areas, have cryptic behaviors, and are difficult to follow in the wild. Here, we present a study on the spread of the simian T-lymphotropic Virus Type 1 (STLV-1), the simian counterpart of the human T-lymphotropic virus type 1 (HTLV-1) in a semi-captive mandrill colony. This study combines 28 years of longitudinal monitoring, including behavioral data, with a dynamic mathematical model and Bayesian inference. Three transmission modes were suspected: aggressive, sexual and familial. Our results show that among males, STLV-1 transmission occurs preferentially via aggression. Because of their impressive aggressive behavior male mandrills can easily transmit the virus during fights. On the contrary, sexual activity seems to have little effect. Thus transmission appears to occur primarily via male-male and female-female contact. In addition, for young mandrills, familial transmission appears to play an important role in virus spread.
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9
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Smiley Evans T, Barry PA, Gilardi KV, Goldstein T, Deere JD, Fike J, Yee J, Ssebide BJ, Karmacharya D, Cranfield MR, Wolking D, Smith B, Mazet JAK, Johnson CK. Optimization of a Novel Non-invasive Oral Sampling Technique for Zoonotic Pathogen Surveillance in Nonhuman Primates. PLoS Negl Trop Dis 2015; 9:e0003813. [PMID: 26046911 PMCID: PMC4457869 DOI: 10.1371/journal.pntd.0003813] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 05/04/2015] [Indexed: 12/17/2022] Open
Abstract
Free-ranging nonhuman primates are frequent sources of zoonotic pathogens due to their physiologic similarity and in many tropical regions, close contact with humans. Many high-risk disease transmission interfaces have not been monitored for zoonotic pathogens due to difficulties inherent to invasive sampling of free-ranging wildlife. Non-invasive surveillance of nonhuman primates for pathogens with high potential for spillover into humans is therefore critical for understanding disease ecology of existing zoonotic pathogen burdens and identifying communities where zoonotic diseases are likely to emerge in the future. We developed a non-invasive oral sampling technique using ropes distributed to nonhuman primates to target viruses shed in the oral cavity, which through bite wounds and discarded food, could be transmitted to people. Optimization was performed by testing paired rope and oral swabs from laboratory colony rhesus macaques for rhesus cytomegalovirus (RhCMV) and simian foamy virus (SFV) and implementing the technique with free-ranging terrestrial and arboreal nonhuman primate species in Uganda and Nepal. Both ubiquitous DNA and RNA viruses, RhCMV and SFV, were detected in oral samples collected from ropes distributed to laboratory colony macaques and SFV was detected in free-ranging macaques and olive baboons. Our study describes a technique that can be used for disease surveillance in free-ranging nonhuman primates and, potentially, other wildlife species when invasive sampling techniques may not be feasible. Wild nonhuman primates are frequent sources of pathogens that could be transmitted to humans because they are closely genetically related and have intimate contact with humans in many parts of the world. Sampling primates to screen for zoonotic pathogens is logistically challenging because standard invasive sampling techniques, such as the collection of a blood sample or an oral swab, requires field anesthesia. This research describes a non-invasive oral sampling technique that involves distributing a rope for primates to chew on that can be retrieved and screened for pathogens. Oral samples were successfully collected from multiple wild primate species in remote field settings and viruses were detected in those samples. This non-invasive sampling method has the potential for future applications in disease studies examining primates as sources of diseases that could affect humans in remote tropical settings.
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Affiliation(s)
- Tierra Smiley Evans
- One Health Institute, University of California, Davis, Davis, California, United States of America
| | - Peter A. Barry
- California National Primate Research Center, University of California, Davis, Davis, California, United States of America
| | - Kirsten V. Gilardi
- One Health Institute, University of California, Davis, Davis, California, United States of America
| | - Tracey Goldstein
- One Health Institute, University of California, Davis, Davis, California, United States of America
| | - Jesse D. Deere
- California National Primate Research Center, University of California, Davis, Davis, California, United States of America
| | - Joseph Fike
- California National Primate Research Center, University of California, Davis, Davis, California, United States of America
| | - JoAnn Yee
- California National Primate Research Center, University of California, Davis, Davis, California, United States of America
| | | | | | - Michael R. Cranfield
- One Health Institute, University of California, Davis, Davis, California, United States of America
| | - David Wolking
- One Health Institute, University of California, Davis, Davis, California, United States of America
| | - Brett Smith
- One Health Institute, University of California, Davis, Davis, California, United States of America
| | - Jonna A. K. Mazet
- One Health Institute, University of California, Davis, Davis, California, United States of America
| | - Christine K. Johnson
- One Health Institute, University of California, Davis, Davis, California, United States of America
- * E-mail:
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10
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Magiorkinis G, Blanco-Melo D, Belshaw R. The decline of human endogenous retroviruses: extinction and survival. Retrovirology 2015; 12:8. [PMID: 25640971 PMCID: PMC4335370 DOI: 10.1186/s12977-015-0136-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 01/06/2015] [Indexed: 12/21/2022] Open
Abstract
Background Endogenous Retroviruses (ERVs) are retroviruses that over the course of evolution have integrated into germline cells and eventually become part of the host genome. They proliferate within the germline of their host, making up ~5% of the human and mouse genome sequences. Several lines of evidence have suggested a decline in the rate of ERV integration into the human genome in recent evolutionary history but this has not been investigated quantitatively or possible causes explored. Results By dating the integration of ERV loci in 40 mammal species, we show that the human genome and that of other hominoids (great apes and gibbons) have experienced an approximately four-fold decline in the ERV integration rate over the last 10 million years. A major cause is the recent extinction of one very large ERV lineage (HERV-H), which is responsible for most of the integrations over the last 30 million years. The decline however affects most other ERV lineages. Only about 10% of the decline might be attributed to an accompanying increase in body mass (a trait we have shown recently to be negatively correlated with ERV integration rate). Humans are unusual compared to related species – Old World monkeys, great apes and gibbons – in (a) having not acquired any new ERV lineages during the last 30 million years and (b) the possession of an old ERV lineage that has continued to replicate up until at least the last few hundred thousand years – the potentially medically significant HERVK(HML2). Conclusions The human genome shares with the genome of other great apes and gibbons a recent decline in ERV integration that is not typical of other primates and mammals. The human genome differs from that of related species both in maintaining up until at least recently a replicating old ERV lineage and in not having acquired any new lineages. We speculate that the decline in ERV integration in the human genome has been exacerbated by a relatively low burden of horizontally-transmitted retroviruses and subsequent reduced risk of endogenization. Electronic supplementary material The online version of this article (doi:10.1186/s12977-015-0136-x) contains supplementary material, which is available to authorized users.
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11
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Gogarten JF, Akoua-Koffi C, Calvignac-Spencer S, Leendertz SAJ, Weiss S, Couacy-Hymann E, Koné I, Peeters M, Wittig RM, Boesch C, Hahn BH, Leendertz FH. The ecology of primate retroviruses - an assessment of 12 years of retroviral studies in the Taï national park area, Côte d׳Ivoire. Virology 2014; 460-461:147-53. [PMID: 25010280 DOI: 10.1016/j.virol.2014.05.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 03/24/2014] [Accepted: 05/09/2014] [Indexed: 01/10/2023]
Abstract
The existence and genetic make-up of most primate retroviruses was revealed by studies of bushmeat and fecal samples from unhabituated primate communities. For these, detailed data on intra- and within-species contact rates are generally missing, which makes identification of factors influencing transmission a challenging task. Here we present an assessment of 12 years of research on primate retroviruses in the Taï National Park area, Côte d'Ivoire. We discuss insights gained into the prevalence, within- and cross-species transmission of primate retroviruses (including towards local human populations) and the importance of virus-host interactions in determining cross-species transmission risk. Finally we discuss how retroviruses ecology and evolution may change in a shifting environment and identify avenues for future research.
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Affiliation(s)
- Jan F Gogarten
- Research group Epidemiology of Highly Pathogenic Microorganisms RKI, Berlin, Germany; Primatology department, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany; Department of Biology, McGill University, Montreal, Quebec, Canada
| | - Chantal Akoua-Koffi
- Reseach Center for the Development and Teaching Hospital, Université Alassane Ouattara de Bouake, Cote d׳Ivoire
| | | | - Siv Aina J Leendertz
- Research group Epidemiology of Highly Pathogenic Microorganisms RKI, Berlin, Germany
| | - Sabrina Weiss
- Research group Epidemiology of Highly Pathogenic Microorganisms RKI, Berlin, Germany
| | | | - Inza Koné
- Taï Monkey Project, Centre Suisse de Recherches Scientifiques, B.P. 1303 Abidjan, Côte d'Ivoire and Laboratory of Zoology, University of Cocody, 22 B.P. 582, Abidjan 22, Côte d׳Ivoire
| | - Martine Peeters
- UMI 233, TransVIHMI, Institute for Research and Development (IRD) and University of Montpellier 1, Montpellier, France
| | - Roman M Wittig
- Primatology department, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Christophe Boesch
- Primatology department, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Beatrice H Hahn
- Department of Microbiology and Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States of America
| | - Fabian H Leendertz
- Research group Epidemiology of Highly Pathogenic Microorganisms RKI, Berlin, Germany.
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12
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Evaluation of non-invasive biological samples to monitor Staphylococcus aureus colonization in great apes and lemurs. PLoS One 2013; 8:e78046. [PMID: 24205084 PMCID: PMC3804461 DOI: 10.1371/journal.pone.0078046] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Accepted: 09/09/2013] [Indexed: 12/03/2022] Open
Abstract
Introduction Reintroduction of endangered animals as part of conservational programs bears the risk of importing human pathogens from the sanctuary to the natural habitat. One bacterial pathogen that serves as a model organism to analyze this transmission is Staphylococcus aureus as it can colonize and infect both humans and animals. The aim of this study was to evaluate the utility of various biological samples to monitor S. aureus colonization in great apes and lemurs. Methods Mucosal swabs from wild lemurs (n=25, Kirindy, Madagascar), feces, oral and genital swabs from captive chimpanzees (n=58, Ngamba and Entebbe, Uganda) and fruit wadges and feces from wild chimpanzees (n=21, Taï National Parc, Côte d’Ivoire) were screened for S. aureus. Antimicrobial resistance and selected virulence factors were tested for each isolate. Sequence based genotyping (spa typing, multilocus sequence typing) was applied to assess the population structure of S. aureus. Results Oro-pharyngeal carriage of S. aureus was high in lemurs (72%, n=18) and captive chimpanzees (69.2%, n=27 and 100%, n=6, respectively). Wild chimpanzees shed S. aureus through feces (43.8, n=7) and fruit wadges (54.5, n=12). Analysis of multiple sampling revealed that two samples are sufficient to detect those animals which shed S. aureus through feces or fruit wadges. Genotyping showed that captive animals are more frequently colonized with human-associated S. aureus lineages. Conclusion Oro-pharyngeal swabs are useful to screen for S. aureus colonization in apes and lemurs before reintroduction. Duplicates of stool and fruit wadges reliably detect S. aureus shedding in wild chimpanzees. We propose to apply these sampling strategies in future reintroduction programs to screen for S. aureus colonization. They may also be useful to monitor S. aureus in wild populations.
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13
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Calvignac-Spencer S, Adjogoua EV, Akoua-Koffi C, Hedemann C, Schubert G, Ellerbrok H, Leendertz SAJ, Pauli G, Leendertz FH. Origin of human T-lymphotropic virus type 1 in rural Côte d'Ivoire. Emerg Infect Dis 2013; 18:830-3. [PMID: 22516514 PMCID: PMC3358045 DOI: 10.3201/eid1805.111663] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Simian T-lymphotropic virus type 1 (STLV-1) strains occasionally infect humans. However, the frequency of such infections is unknown. We show that direct transmission of STLV-1 from nonhuman primates to humans may be responsible for a substantial proportion of human T-lymphotropic virus type 1 infections in rural Côte d'Ivoire, where primate hunting is common.
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14
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Abstract
Infectious disease plays a major role in the lives of wild primates, and the past decade has witnessed significant strides in our understanding of primate disease ecology. In this review, I briefly describe some key findings from phylogenetic comparative approaches, focusing on analyses of parasite richness that use the Global Mammal Parasite Database. While these studies have provided new answers to fundamental questions, new questions have arisen, including questions about the underlying epidemiological mechanisms that produce the broader phylogenetic patterns. I discuss two examples in which theoretical models have given us new traction on these comparative questions. First, drawing on findings of a positive association between range use intensity and the richness of helminth parasites, we developed a spatially explicit agent-based model to investigate the underlying drivers of this pattern. From this model, we are gaining deeper understanding of how range use intensity results in greater exposure to parasites, thus producing higher prevalence in the simulated populations-and, plausibly, higher parasite richness in comparative analyses. Second, I show how a model of disease spread on social networks provides solid theoretical foundations for understanding the effects of sociality and group size on parasitism across primate species. This study further revealed that larger social groups are more subdivided, which should slow the spread of infectious diseases. This effect could offset the increased disease risk expected in larger social groups, which has yet to receive strong empirical support in our comparative analyses. In addition to these examples, I discuss the need for more meta-analyses of individual-level phenomena documented in the field, and for greater linkage between theoretical modeling and field research.
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Affiliation(s)
- Charles L Nunn
- Department of Human Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138, USA.
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15
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Cross-species transmission of simian retroviruses: how and why they could lead to the emergence of new diseases in the human population. AIDS 2012; 26:659-73. [PMID: 22441170 DOI: 10.1097/qad.0b013e328350fb68] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The HIV-1 group M epidemic illustrates the extraordinary impact and consequences resulting from a single zoonotic transmission. Exposure to blood or other secretions of infected animals, through hunting and butchering of bushmeat, or through bites and scratches inflicted by pet nonhuman primates (NHPs), represent the most plausible source for human infection with simian immunodeficiency virus (SIV), simian T-cell lymphotropic virus (STLV) and simian foamy virus. The chance for cross-species transmissions could increase when frequency of exposure and retrovirus prevalence is high. According to the most recent data, human exposure to SIV or STLV appears heterogeneous across the African countries surveyed. Exposure is not sufficient to trigger disease: viral and host molecular characteristics and compatibility are fundamental factors to establish infection. A successful species jump is achieved when the pathogen becomes transmissible between individuals within the new host population. To spread efficiently, HIV likely required changes in human behavior. Given the increasing exposure to NHP pathogens through hunting and butchering, it is likely that SIV and other simian viruses are still transmitted to the human population. The behavioral and socio-economic context of the twenty-first century provides favorable conditions for the emergence and spread of new epidemics. Therefore, it is important to evaluate which retroviruses the human population is exposed to and to better understand how these viruses enter, infect, adapt and spread to its new host.
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16
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Junglen S, Hedemann C, Ellerbrok H, Pauli G, Boesch C, Leendertz FH. Diversity of STLV-1 strains in wild chimpanzees (Pan troglodytes verus) from Côte d’Ivoire. Virus Res 2010; 150:143-7. [DOI: 10.1016/j.virusres.2010.02.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2010] [Revised: 02/26/2010] [Accepted: 02/27/2010] [Indexed: 10/19/2022]
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High prevalence, coinfection rate, and genetic diversity of retroviruses in wild red colobus monkeys (Piliocolobus badius badius) in Tai National Park, Cote d'Ivoire. J Virol 2010; 84:7427-36. [PMID: 20484508 DOI: 10.1128/jvi.00697-10] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Simian retroviruses are precursors of all human retroviral pathogens. However, little is known about the prevalence and coinfection rates or the genetic diversity of major retroviruses-simian immunodeficiency virus (SIV), simian T-cell lymphotropic virus type 1 (STLV-1), and simian foamy virus (SFV)-in wild populations of nonhuman primates. Such information would contribute to the understanding of the natural history of retroviruses in various host species. Here, we estimate these parameters for wild West African red colobus monkeys (Piliocolobus badius badius) in the Taï National Park, Côte d'Ivoire. We collected samples from a total of 54 red colobus monkeys; samples consisted of blood and/or internal organs from 22 monkeys and additionally muscle and other tissue samples from another 32 monkeys. PCR analyses revealed a high prevalence of SIV, STLV-1, and SFV in this population, with rates of 82%, 50%, and 86%, respectively. Forty-five percent of the monkeys were coinfected with all three viruses while another 32% were coinfected with SIV in combination with either STLV or SFV. As expected, phylogenetic analyses showed a host-specific pattern for SIV and SFV strains. In contrast, STLV-1 strains appeared to be distributed in genetically distinct and distant clades, which are unique to the Taï forest and include strains previously described from wild chimpanzees in the same area. The high prevalence of all three retroviral infections in P. b. badius represents a source of infection to chimpanzees and possibly to humans, who hunt them.
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18
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Morozov VA, Leendertz FH, Junglen S, Boesch C, Pauli G, Ellerbrok H. Frequent foamy virus infection in free-living chimpanzees of the Taï National Park (Côte d'Ivoire). J Gen Virol 2009; 90:500-506. [PMID: 19141461 DOI: 10.1099/vir.0.003939-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Foamy viruses are frequently found in non-human primates and apes in captivity. However, data on simian foamy virus (SFV) infection in apes from the wild are limited. Necropsy specimens were collected from 14 West African chimpanzees (Pan troglodytes verus) from three communities in the Taï National Park, Côte d'Ivoire. PCR analysis revealed SFV-related int- and env-specific sequences in 12/14 chimpanzees. Two young chimpanzees were not infected. Plasma from 'PCR-positive' chimpanzees reacted against Pr71/74(gag) in Western blot analysis. Phylogenetic analysis demonstrated clustering of all analysed sequences with SFVcpz previously identified from the other P. troglodytes verus, although interestingly the sequences were diverse and no grouping according to a particular animal community was observed. The body compartments of two infected animals were examined and found to contain SFV sequences. Frequent SFV infections in chimpanzees from this area significantly increase the potential risk of zoonotic transmission to rural populations through direct contact, hunting and consumption of bush meat.
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Affiliation(s)
| | - Fabian H Leendertz
- Max Planck Institute for Evolutionary Anthropology, 6 Deutscher Platz, 04103 Leipzig, Germany.,Robert Koch Institute, 20 Nordufer, 13353 Berlin, Germany
| | - Sandra Junglen
- Max Planck Institute for Evolutionary Anthropology, 6 Deutscher Platz, 04103 Leipzig, Germany.,Robert Koch Institute, 20 Nordufer, 13353 Berlin, Germany
| | - Christophe Boesch
- Max Planck Institute for Evolutionary Anthropology, 6 Deutscher Platz, 04103 Leipzig, Germany
| | - Georg Pauli
- Robert Koch Institute, 20 Nordufer, 13353 Berlin, Germany
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Gillespie TR, Nunn CL, Leendertz FH. Integrative approaches to the study of primate infectious disease: implications for biodiversity conservation and global health. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2009; Suppl 47:53-69. [PMID: 19003885 DOI: 10.1002/ajpa.20949] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The close phylogenetic relationship between humans and nonhuman primates, coupled with the exponential expansion of human populations and human activities within primate habitats, has resulted in exceptionally high potential for pathogen exchange. Emerging infectious diseases are a consequence of this process that has the capacity to threaten global health and drive primate population declines. Integration of standardized empirical data collection, state-of-the-art diagnostics, and the comparative approach offers the opportunity to create a baseline for patterns of infection in wild primate populations; to better understand the role of disease in primate ecology, behavior, and evolution; and to examine how anthropogenic effects alter the zoonotic potential of various pathogenic organisms. We review these technologies and approaches, including noninvasive sampling in field conditions, and we identify ways in which integrative research activities are likely to fuel future discoveries in primate disease ecology. In addition to considering applied aspects of disease research in primate health and conservation, we review how these approaches are shedding light on parasite biodiversity and the drivers of disease risk across primate species.
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Affiliation(s)
- Thomas R Gillespie
- Department of Environmental Studies, Emory University, Atlanta, GA 30322, USA.
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