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West Nile virus - Multistate (Europe) - Monitoring season 2013 (ECDC/CDTR, August 6 2013)

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  • West Nile virus - Multistate (Europe) - Monitoring season 2013 (ECDC/CDTR, August 6 2013)

    [Source: European Centre for Disease Prevention and Control (ECDC), full PDF document: (LINK). Extracts.]


    Week 31, 28 July-3 August 2013


    West Nile virus - Multistate (Europe) - Monitoring season 2013

    Opening date: 3 June 2013 Latest update: 1 August 2013

    Epidemiological summary

    As of 1 August 2013, eight human cases of West Nile fever have been reported in the EU and 34 cases in neighbouring countries.

    EU Member States
    • Greece
      • As of 1 August, Greece has reported eight cases of WNF. The regions affected are East Attiki (6) and Thessaloniki (2).
      • East Attiki has reported three probable and three confirmed cases, and Thessalonki has recorded one probable and one confirmed case, according to the EU case definition.
    Neighbouring countries
    • Russia
      • As of 30 July, fourteen cases of WNF have been reported in Russia: seven cases in Astrakhanskaya oblast and seven cases in Volgograd oblast.
    • Serbia
      • On 26 July, the Serbian Ministry of Health confirmed seven cases of WNF in Grad Beograd (Belgrade), these are the first cases reported this year.
    • The former Yugoslav Republic of Macedonia
      • On 24 July, the former Yugoslav Republic of Macedonia reported its first case of the year in Kocani (Eastern Macedonia).
    • Israel
      • As of 1 August, Israel has reported 12 cases of WNF (4 confirmed and 8 probable), predominantly in the Central District.
    The World Organisation for Animal Health (OIE) reported two equine cases of WNF in Greece: one horse was found positive through active sero-surveillance in Xanthi on 17 July and another clinical case in Attiki, on 23 July.


    ECDC assessment

    West Nile fever in humans is a notifiable disease in the EU. The implementation of control measures are considered important for ensuring blood safety by the national health authorities when human cases of West Nile fever occur. According to the EU blood directive, efforts should be made to defer blood donations from affected areas with ongoing virus transmission.


    ECDC produces weekly West Nile fever risk maps during the transmission season to inform blood safety authorities regarding affected areas.

    ECDC published a West Nile fever risk assessment tool on 3 July 2013.