Risk mapping of influenza D virus occurrence in ruminants and swine in Togo using a spatial multicriteria decision analysis approach
2020
Fusade-Boyer, Maxime | Pato, Pidemnéwé S. | Komlan, Mathias | Dogno, Koffi | Batawui, Komla | Go-Maro, Emilie | McKenzie, Pamela | Guinat, Claire | Sécula, Aurélie | Paul, Mathilde | Webby, Richard J. | Tran, Annelise | Waret-Szkuta, Agnès | Ducatez, Mariette
Influenza D virus (IDV) has been identified in several continents, with serological evidence for the virus in Africa. In order to improve the sensitivity and cost–benefit of IDV surveillance in Togo, risk maps were drawn using a spatial multicriteria decision analysis (MCDA) and experts' opinion to evaluate the relevance of sampling areas used so far. Areas at highest risk of IDV occurrence were the main cattle markets. The maps were evaluated with previous field surveillance data collected in Togo between 2017 and 2019: 1216 sera from cattle, small ruminants, and swine were screened for antibodies to IDV by hemagglutination inhibition (HI) assays. While further samples collections are needed to validate the maps, the risk maps resulting from the spatial MCDA approach generated here highlight several priority areas for IDV circulation assessment.
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