Sero-epidemiology and risk factor investigation for exposure to Japanese encephalitis virus in swine populations reared in climatically diverse regions of India.

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Název: Sero-epidemiology and risk factor investigation for exposure to Japanese encephalitis virus in swine populations reared in climatically diverse regions of India.
Autoři: Mote, Akash Balasaheb1 (AUTHOR), Singh, Balbir B.2 (AUTHOR), Mehta, Deepa1 (AUTHOR), Patel, Sagar M.1 (AUTHOR), Dhanalakshmi, M.3 (AUTHOR), Suman Kumar, M.1 (AUTHOR), Bhilegaonkar, K. N.1 (AUTHOR), Dhanze, Himani1 (AUTHOR) hdhanze@yahoo.co.in
Zdroj: Tropical Animal Health & Production. Dec2024, Vol. 56 Issue 9, p1-10. 10p.
Druh dokumentu: Article
Author-Supplied Keywords: Ecology
India
Japanese encephalitis
Risk factor
Seroprevalence
Swine
Abstrakt: Japanese encephalitis (JE) is widely prevalent in the Asia–Pacific region. There is limited information on JE virus (JEV) seroprevalence as well as the associated epidemiologic and ecological factors in India. This study aimed to determine the seroprevalence of JEV and associated risk factors in swine populations from climatically diverse regions of the country. A total of 1205 swine serum samples were collected from the backyard/established/slaughterhouse settings of the western (Maharashtra state), northern (Uttar Pradesh state), northern temperate (Uttarakhand state), and northeastern (Assam state) zones of India. Information on demographic (swine population), geographic (paddy cultivation area) and weather (annual rainfall)-related variables was collected and analysed to understand their association with JE seropositivity. A JEV seroprevalence of 20.3% (95% CI: 17.9–22.7) using IgM and 16.6% (95% CI: 14.3–19.1) using IgG ELISA(s) was recorded, with an overall seroprevalence of 17.7% (95% CI: 15.8–19.6). The highest seroprevalence was observed in Assam state (30.2%; 95% CI: 25.9–34.7) followed by Maharashtra (17.2%; 95% CI: 13.6–21.1), Uttarakhand (13.4%; 95% CI: 10.1–17.3) and Uttar Pradesh (11%; 95% CI: 8.2–14.3). JEV seroprevalence was highest during the post-monsoon season (40.3%, 95% CI: 34.7–46.0, n = 205), followed by the monsoon (18.9%, 95% CI: 15.7–22.2, n = 410), winter (17.0%, 95% CI: 13.5–20.9, n = 290), and summer (3.7%, 95% CI: 1.9–6.2, n = 300) seasons. The final multivariable analysis indicated that odds of infection were 2.59 (95% CI: 1.77–3.81, p = 0.001) times greater in the dense swine population area (population > 7616–81872 v/s 313–2006) and 5.77 (95% CI: 3.80–8.76, p = < 0.001) times greater in the small per capita paddy area (0–0.011 v/s > 0.046–0.091 hectares). This is the first study reporting JEV seroprevalence in the swine population of the northern temperate Indian zone, and it is recommended that sentinel surveillance and JE vaccine coverage be extended to the newly reported areas of virus activity. [ABSTRACT FROM AUTHOR]
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Author Affiliations: 1https://ror.org/02jcfzc36 Division of Veterinary Public Health, ICAR – Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
2https://ror.org/00bbeqy02 Centre for One Health, Guru Angad Dev Veterinary & Animal Sciences University, Ludhiana, Punjab, India
3https://ror.org/04waphv22 Veterinary College and Research Institute, Orathanadu, Tamil Nadu Veterinary and Animal Sciences University, Chennai, India
Full Text Word Count: 7273
ISSN: 0049-4747
DOI: 10.1007/s11250-024-04243-0
Přístupové číslo: 181402961
Databáze: Veterinary Source
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