Seroprevalence of Dengue, Zika, and Chikungunya Viruses in Humans and Colocated Macaques in Thailand and Cambodia
2
Issued Date
2025-09-15
Resource Type
eISSN
15376613
Scopus ID
2-s2.0-105016834288
Pubmed ID
40400169
Journal Title
Journal of Infectious Diseases
Volume
232
Issue
3
Start Page
e496
End Page
e506
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Infectious Diseases Vol.232 No.3 (2025) , e496-e506
Suggested Citation
Mongkol N., Chea S., Man S., Ly P., Hou C., Ly S., Sath R., Lon C., Hok K., Chea H., Leang R., Huy R., Lin S.B., Sae Wang F., Tongthainan D., Fungfuang W., Lijitipoom S., Suthisawat S., Kosoltanapiwat N., Panpeth N., Whitehead S.S., Oliveira F., Christofferson R.C., Manning J.E., Boonnak K., Yek C. Seroprevalence of Dengue, Zika, and Chikungunya Viruses in Humans and Colocated Macaques in Thailand and Cambodia. Journal of Infectious Diseases Vol.232 No.3 (2025) , e496-e506. e506. doi:10.1093/infdis/jiaf262 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/112317
Title
Seroprevalence of Dengue, Zika, and Chikungunya Viruses in Humans and Colocated Macaques in Thailand and Cambodia
Author's Affiliation
National Institute of Allergy and Infectious Diseases (NIAID)
Kasetsart University
Siriraj Hospital
Faculty of Tropical Medicine, Mahidol University
NIH Clinical Center (CC)
Thailand Ministry of Public Health
School of Veterinary Medicine
Rajamangala University of Technology Tawan-ok
Ministry of Health Cambodia
Wildlife
Kasetsart University
Siriraj Hospital
Faculty of Tropical Medicine, Mahidol University
NIH Clinical Center (CC)
Thailand Ministry of Public Health
School of Veterinary Medicine
Rajamangala University of Technology Tawan-ok
Ministry of Health Cambodia
Wildlife
Corresponding Author(s)
Other Contributor(s)
Abstract
BACKGROUND: Arboviruses-short for "arthropod-borne viruses"-are transmitted to humans and animals by infected arthropods. Aedes mosquito-borne arboviruses such as dengue virus (DENV), Zika virus (ZIKV), and chikungunya virus (CHIKV) impose major public health burdens in Southeast Asia. The potential role of sylvatic reservoirs, such as macaques, in maintaining arboviral transmission remains unclear. METHODS: We assessed the role of sylvatic reservoirs in arboviral circulation by examining serological evidence of exposure to DENV, ZIKV, and CHIKV among humans and macaques living in close proximity in endemic regions. Cross-sectional serosurveys were carried out during 2019-2022, involving 649 humans and 398 macaques colocated across 4 sites in Thailand (Hua Hin, Laem Chabang, and Muang Lop Buri) and Cambodia (Chbar Mon). Seropositivity was evaluated using plaque reduction neutralization tests (PRNT50). RESULTS: We found overall higher seropositivity rates across arboviruses among human populations compared to macaques (38.5%-74.4% vs 0%-8.0%, respectively, using PRNT50 cutoff). Virus seroprevalence differed between Thai and Cambodian cohorts and age was the only significant predictor of human seropositivity in multivariate analyses. CONCLUSIONS: The low seropositivity among macaques suggests a limited role of macaques in sustaining and amplifying urban arboviral cycles; rather, low-level macaque seropositivity may signal virus spillback from human populations.