West Nile virus in Europe in 2021 - infections among humans and outbreaks among equids and/or birds, updated 23 September 2021

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Period: 17 Sep 2021 - 23 Sep 2021

Between 17 and 23 September 2021, European Union (EU) and European Economic Area (EEA) countries reported 9 human cases of West Nile virus (WNV) infection and 1 deaths related to WNV infections. Cases were reported by Greece (5) and Italy (4). Deaths were reported by Greece (1). EU-neighbouring countries reported 2 human cases of WNV infection in Serbia (2) and no deaths related to WNV infections.

Since the beginning of the 2021 transmission season and as of 23 September 2021, EU/EEA countries have reported 107 human cases of WNV infection in Greece (48), Italy (36), Romania (7), Spain (5), Hungary (5), Austria (3) and Germany (3) and 7 deaths in Greece (5), Spain (1) and Romania (1). EU-neighbouring countries have reported 15 human cases of WNV infection in Serbia (15) and 3 deaths in Serbia (3).

During the current transmission season, within the reporting countries, human cases of WNV infection were reported from 42 different NUTS 3 or GAUL 1 regions, of which the following regions reported human cases of WNV infection for the first time: Spree-Neiße in Germany and La Spezia in Italy.

Since the beginning of the 2021 transmission season, 15 outbreaks among equids and 4 outbreaks among birds have been reported by EU/EEA countries. Outbreaks among equids have been reported by Germany (9), Spain (4) and Hungary (2). Outbreaks among birds have been reported by Spain (4).

West Nile virus in Europe in 2021 - infections among humans and outbreaks among equids and/or birds, updated 23 September 2021

Weekly updates: 2021 West Nile virus transmission season

Weekly updates with the latest reports on West Nile virus cases in Europe. Interactive maps and tables updated every Friday, during the transmission season.