Weekly updates: 2018 West Nile fever transmission season


Situation update

Between 9 and 15 November 2018, EU Member States reported two human West Nile virus (WNV) infections in France (1) and Romania (1). The most recent onset dates are from week 43 (22 to 28 October). EU neighbouring countries reported 23 cases in Israel (18) and Serbia (5).

All human cases were reported from areas that have been affected during previous transmission seasons.
This week no deaths were reported.

In the same week, three outbreaks among equids were reported by Austria (1), Hungary (1) and Italy (1).

In 2018, as of 15 November 2018, EU Member States have reported 1 491 human cases in Italy (569), Greece (309), Romania (277), Hungary (214), Croatia (53), France (25), Austria (20), Bulgaria (15), the Czech Republic (5), Slovenia (3) and Cyprus (1). EU neighbouring countries reported 557 human cases in Serbia (415), Israel (128) and Kosovo* (14). To date, 171 deaths due to West Nile virus infection have been reported by Greece (45), Italy (42), Romania (42), Serbia (35), Kosovo* (3), Bulgaria (2), the Czech Republic (1) and Hungary (1).

During the current transmission season, 279 outbreaks among equids have been reported by Italy (145), Hungary (91), Greece (15), France (13), Spain (7), Austria (2), Romania (2), Germany (2), Slovenia (1) and Portugal (1).

In accordance with European Commission Directive 2014/110/EU, prospective blood donors should be deferred for 28 days after leaving an area with evidence of WNV circulation among humans unless the results of an individual nucleic acid test are negative.

*This designation is without prejudice to positions on status, and is in line with UNSCR 1244 and the International Court of Justice Opinion on the Kosovo Declaration of Independence.


Data from the ECDC surveillance Atlas

Weekly updates

Case definition

EU case definition for diagnosing and reporting West Nile fever, under Decision No 2119/98/EC of the European Parliament and of the Council.

ECDC is providing, for the current transmission season, weekly updates on the reported cases of West Nile fever in humans and equidae in the EU Member States and neighbouring countries (i.e. those included in WHO European region and/or bordering the Mediterranean Sea). Read more