Evidence of persistant activity of West Nile Virus in the Po plain area of Italy

CAA Centro Agricoltura Ambiente > Meetings partecipations > Entomologia e Zoologia Sanitarie > Evidence of persistant activity of West Nile Virus in the Po plain area of Italy

Bellini R., P.Bonilauri, P.Angelini, A.Albieri, R.Veronesi, M.Calzolari, M. Dottori, M.Tamba, L.Venturi, C.Venturelli, B.Borrini, E.Martini

5th SOVE CONGRESS,
11-16 October 2009, Antalya, Turkey.

In the Mediterranean basin, West Nile virus (WNV) causes sporadic outbreaks, which usually affect a low number of humans and animals, after which long periods without virus circulation occur. An hypothesis is that the virus can remain silent, circulating in a sylvatic enzootic bird-mosquito cycle and only under appropriate conditions causing new outbreaks in humans and horses.
During the late summer 2008 a large epidemic of West Nile virus occurred in North-East Italy involving an area of more than 7,000 Kmsq in 3 Regions (Lombardia, Veneto, Emilia-Romagna). This was the largest epidemic ever recorded in the country. Following the first evidence in equine and birds an active entomological surveillance plan was started by the Emilia-Romagna Surveillance Group on Vectorial Disease.

 

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