First confirmed case of a patient in Austria in 2013.

First recorded infection in Hungary in 2013.

First confirmed infection in 2013 in Romania.

WNV recorded in the province of Parma, Emilia-Romagna region.

In the province of Verona, the WN virus is now widespread.

3 infected donors from the province of Modena and another case in the Veneto region have been reported.

4 confirmed cases in 2013.

The provinces of Bologna and Modena were added to the already known risk areas.

First confirmed infection recorded in Greece, Attiki.

Number of cases increased to 201 ill persons by July 4, 2013 and thus now epidemic.