Weekly updates: 2018 West Nile fever transmission season

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Number of WNV infections in EU/EEA and EU enlargement countries by epidemiological week of notification*, 2014-2018.
Number of WNV infections in EU/EEA and EU enlargement countries by epidemiological week of notification*, 2014-2018.

Situation update

Between 7 and 13 December 2018, no new human West Nile virus infections have been reported by EU Member States. One case was reported by EU neighbouring countries, by Turkey, with date of onset reported from week 39, 24 to 30 September 2018. This case was reported from a previously affected area. One death was reported this week in Turkey.

In the same week, no new outbreaks among equids were reported.

As no new cases with disease onset in the previous four weeks have been reported, this is the final weekly update for the 2018 transmission season.

In 2018, as of 13 December 2018, EU Member States have reported 1 503 human cases in Italy (576), Greece (311), Romania (277), Hungary (215), Croatia (53), France (27), Austria (20), Bulgaria (15), the Czech Republic (5), Slovenia (3) and Cyprus (1). EU neighbouring countries reported 580 human cases in Serbia (415), Israel (128), Turkey (23) and Kosovo* (14). To date, 181 deaths due to West Nile virus infection have been reported by Greece (47), Italy (46), Romania (43), Serbia (35), Kosovo* (3), Turkey (3), Bulgaria (2), the Czech Republic (1) and Hungary (1).

During the 2018 transmission season, 285 outbreaks among equids have been reported by Italy (149), Hungary (91), Greece (15), France (13), Spain (9), 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.

As no new cases with disease onset in the previous four weeks have been reported, this is the final weekly update for this transmission season. ECDC published an end-of-season epidemiological update.

*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