Study shows sylvatic origin of chikungunya virus transmission among nonhuman primates of Myanmar CDCgov ChikungunyaVirus Transmission Myanmar
By Pooja Toshniwal PahariaNov 22 2022Reviewed by Aimee Molineux In a recent study published in Emerging Infectious Diseases, researchers investigated the potential exposure of peri-urban non-human primates residing near Yangon to arboviruses that have raised health concerns. They also investigated whether NHPs could be potential sources of viral spillover to humans or could be infected by reverse arboviral spillover from humans.
About the study In the present study, researchers investigated the origin of CHIKV transmission among NHPs living in Myanmar and the role of NHPs living in forested areas outside Yangon in CHIKV re-emergence. The number of positive or negative serum samples based on the total Ig titers and period prevalence in rhesus macaques and pig-tailed macaques were determined. Differences in results obtained by sex , age class , and season were analyzed.
In 2017, anti-CHIKV antibodies were detected in NHPs aged below five years, indicative of an inter-epidemic period exposure. The large population of exposed NHPs indicated active CHIKV circulation among primates and sylvatic mosquitoes in the park. No human CHIKV infections were documented during the study, indicating that viral spillover from humans to NHPs through mosquitoes was not likely.
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