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Rift Valley Fever, Mauritania, 2020: Lessons of a One Health Approach

2022; RELX Group (Netherlands); Linguagem: Inglês

10.2139/ssrn.4087383

1556-5068

Yahya Barry, Ahmed Elbara, Mohamed Abdallahi Bollahi, Ahmed Bezeid Ould El Mamy, Mokhtar Fall, Abdellahi Diambar Beyit, Mariem Seyidna Khayar, Ba Aliou Demba, Mohamed Limine Haki, Ousmane Faye, Ludovic Plee, Etienne Bonbon, Baba Doumbia, Elena Arsevska, Catherine Cêtre-Sossah,

Zoonotic diseases and public health

A new outbreak of Rift Valley fever (RVF) occurred in Mauritania from September to November 2020, causing 78 human and 186 animal reported cases. Eleven out of the 13 regions of the country were affected by the epidemic, with the highest number of human and animal cases in Tagant, Assaba and Brakna regions. The most susceptible animal species in this outbreak were the dromedaries, followed by the small ruminants. Among the ten mosquito species caught, six species namely Culex poicilipes, Cx. antennatus, Cx uni-vitattus, Aedes vexans Mansonia africana and Ma. uniformis are known to be involved in the transmission of RVF virus. Phylogenetic analyses based on the partial NSs gene indicated a close proximity of the human/animal Mauritania 2020 viral strains with the Mauritania 2015/Niger 2016 strains suggesting a re-emergence of RVF virus within the country since the last reported outbreak of 2015.