Weekly updates: 2018 West Nile fever transmission season


Situation update

Between 14 and 20 September 2018, EU Member States reported 186 human West Nile virus infections: Italy (92), Greece (32), Romania (33), Hungary (12), Croatia (11), Austria (2), Slovenia (2) and Bulgaria (2). This week, no human cases were reported by EU neighbouring countries.

In six areas, human cases were reported for the first time: Croatia (2), Slovenia (2), Italy (1) and Greece (1). All other human cases were reported from areas that have been affected during previous transmission seasons.

This week, 25 deaths were reported by Italy (14), Romania (6) and Greece (5).

In the same week, 12 outbreaks among equids were reported by Italy (6), Hungary (5) and Austria (1).

In 2018, as of 20 September 2018, EU Member States have reported 1 134 human cases: Italy (453), Greece (224), Romania (216), Hungary (167), Croatia (36), France (16), Austria (15), Bulgaria (4) and Slovenia (3). EU neighbouring countries reported 370 human cases: Serbia (286), Israel (81) and Kosovo* (3). To date, 115 deaths due to West Nile virus infection have been reported by Italy (35), Serbia (29), Romania (25), Greece (24), Hungary (1) and Kosovo* (1).

During the current transmission season, 175 outbreaks among equids have been reported by Italy (98), Hungary (63), Greece (9), France (2), Romania (2) and Austria (1).

In accordance with European Commission Directive 2014/110/EU, prospective blood donors should defer for 28 days after leaving an area with evidence of West Nile virus 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