Seroprevalence and associated risk factors of chikungunya, dengue, and Zika in eight districts in Tanzania.
Int J Infect Dis
; 111: 271-280, 2021 Oct.
Article
em En
| MEDLINE
| ID: mdl-34428546
ABSTRACT
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.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Vírus Chikungunya
/
Dengue
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Vírus da Dengue
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Febre de Chikungunya
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Zika virus
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Infecção por Zika virus
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article