1. Exposure to diverse sarbecoviruses indicates frequent zoonotic spillover in human communities interacting with wildlife
- Author
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Evans, Tierra Smiley, Tan, Chee Wah, Aung, Ohnmar, Phyu, Sabai, Lin, Htin, Coffey, Lark L, Toe, Aung Than, Aung, Pyaephyo, Aung, Tin Htun, Aung, Nyein Thu, Weiss, Christopher M, Thant, Kyaw Zin, Htun, Zaw Than, Murray, Suzan, Wang, Linfa, Johnson, Christine Kreuder, and Thu, Hlaing Myat
- Subjects
Health Services and Systems ,Health Sciences ,Clinical Research ,Infectious Diseases ,Prevention ,Emerging Infectious Diseases ,Biodefense ,Coronaviruses ,2.2 Factors relating to the physical environment ,Life on Land ,Animals ,Humans ,Animals ,Wild ,Chiroptera ,SARS-CoV-2 ,Severe acute respiratory syndrome-related coronavirus ,COVID-19 ,Zoonoses ,Phylogeny ,Coronavirus ,Sarbecovirus ,Bat ,Zoonotic ,Myanmar ,Microbiology ,Medical Microbiology ,Public Health and Health Services ,Clinical sciences ,Epidemiology ,Public health - Abstract
BackgroundSarbecoviruses are a subgenus of Coronaviridae that mostly infect bats with known potential to infect humans (SARS-CoV and SARS-CoV-2). Populations in Southeast Asia, where these viruses are most likely to emerge, have been undersurveyed to date.MethodsWe surveyed communities engaged in extractive industries and bat guano harvesting from rural areas in Myanmar. Participants were screened for exposure to sarbecoviruses, and their interactions with wildlife were evaluated to determine the factors associated with exposure to sarbecoviruses.ResultsOf 693 people screened between July 2017 and February 2020, 12.1% were seropositive for sarbecoviruses. Individuals were significantly more likely to have been exposed to sarbecoviruses if their main livelihood involved working in extractive industries (logging, hunting, or harvesting of forest products; odds ratio [OR] = 2.71, P = 0.019) or had been hunting/slaughtering bats (OR = 6.09, P = 0.020). Exposure to a range of bat and pangolin sarbecoviruses was identified.ConclusionExposure to diverse sarbecoviruses among high-risk human communities provides epidemiologic and immunologic evidence that zoonotic spillover is occurring. These findings inform risk mitigation efforts needed to decrease disease transmission at the bat-human interface, as well as future surveillance efforts warranted to monitor isolated populations for viruses with pandemic potential.
- Published
- 2023