Seroprevalence and associated risk factors of chikungunya, dengue, and Zika in eight districts in Tanzania

International Journal of Infectious Diseases

Francesco Vairo¹  Gerald Misinzo²  Calvin Sindato²  Leonard E.G. Mboera²  Muzamil M. Abdel Hamid³  Susan F. Rumisha⁴  Mark M. Rweyemamu⁵  Sima Rugarabamu⁶  Esron D. Karimuribo⁶  Najmul Haider⁶  Gaspary O. Mwanyika⁶  Richard Kock⁶ 

[1] Department of Veterinary Medicine and Public Health, Sokoine University of Agriculture, Morogoro, Tanzania;Department of Veterinary Microbiology, Parasitology and Biotechnology, Sokoine University of Agriculture, Morogoro, Tanzania;Malaria Atlas Project, Geospatial Health and Development, Telethon Kids Institute, West Perth, Western Australia;National Institute for Medical Research, Tabora Research Centre, Tabora, Tanzania;National Institute for Medical Research, Headquarters, Dar es Salaam, Tanzania;SACIDS Foundation for One Health, Sokoine University of Agriculture, Morogoro, Tanzania;

关键词: Chikungunya;    Dengue;    Zika;    Seroprevalence;    Risk factors;    Tanzania;   

DOI  :  

来源: DOAJ

【 摘 要 】

Background: This study was conducted to determine the seroprevalence and risk factors of chikungunya (CHIKV), dengue (DENV), and Zika (ZIKV) viruses in Tanzania.Methods: The study covered the districts of Buhigwe, Kalambo, Kilindi, Kinondoni, Kondoa, Kyela, Mvomero, and Ukerewe in Tanzania. Blood samples were collected from individuals recruited from households and healthcare facilities. An ELISA was used to screen for immunoglobulin G antibodies against CHIKV, DENV, and ZIKV.Results: A total of 1818 participants (median age 34 years) were recruited. The overall CHIKV, DENV, and ZIKV seroprevalence rates were 28.0%, 16.1%, and 6.8%, respectively. CHIKV prevalence was highest in Buhigwe (46.8%), DENV in Kinondoni (43.8%), and ZIKV in Ukerewe (10.6%) and Mvomero (10.6%). Increasing age and frequent mosquito bites were significantly associated with CHIKV and DENV seropositivity (P < 0.05). Having piped water or the presence of stagnant water around the home (P < 0.01) were associated with higher odds of DENV seropositivity. Fever was significantly associated with increased odds of CHIKV seropositivity (P < 0.001). Visiting mines had higher odds of ZIKV seropositivity (P < 0.05).Conclusions: These findings indicate that DENV, CHIKV, and ZIKV are circulating in diverse ecological zones of Tanzania. There is a need to strengthen the control of mosquito-borne viral diseases in Tanzania.

【 授权许可】

Unknown