Since the last epidemiological update on 31 August 2018, European countries have reported 530 new West Nile virus (WNV) cases and 52 deaths. The number of WNV infections reported so far exceeds the total number of infections in the previous five years.
An unusual early start and high number of locally acquired West Nile virus infections has been observed this year. ECDC assesses the epidemiological situation and the public health risk to the EU, in a rapid risk assessment published today.
Vector sampling protocols outlining the recommended methods for collecting vectors have been issued today by ECDC and EFSA, to support entomologists and public-health professionals in Europe. It is a first attempt to summarise best-practices in terms of methods and strategies for sampling mosquitoes, sandflies, biting midges and ticks.
Since the beginning of 2018 and as of 14 May, 2 980 autochthonous cases of dengue have been reported in Réunion. The main areas affected are in the western part of the island. The most prevalent serotype among dengue cases is DENV-2 and the main vector implicated in the outbreak is Aedes albopictus.
During the 2017 transmission season, 204 human cases and 127 equine cases were reported in the European Union. This year, for the first time, ECDC included equine West Nile fever cases in its epidemiological updates.