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Published Date: 2012-08-23 10:42:47
Subject: PRO/AH/EDR> West Nile virus - Eurasia (05): Croatia (VS) equine, OIE
Archive Number: 20120823.1258325

WEST NILE VIRUS - EURASIA (05): CROATIA (VUKOVARSKO-SRIJEMSKA) EQUINE, OIE
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Date: Wed 22 Aug 2012
Source: OIE, WAHID (World Animal Health Information Database), weekly disease information 2012; 25(34) [edited]
http://web.oie.int/wahis/public.php?page=single_report&pop=1&reportid=12224

West Nile Fever, Croatia
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Information received on (and dated) 22 Aug 2012 from Dr Mirjana Matausic-Pisl, Assistant to Minister Ministry of Agriculture, Veterinary Directorate, Ministry of Agriculture, Zagreb, Croatia

Summary
Report type: immediate notification
Start date: 18 Jul 2012
Date of 1s confirmation of the event: 21 Aug 2012
Report date: 22 Aug /2012
Date submitted to OIE: 22 Aug 2012
Reason for notification: 1st occurrence of a listed disease
Manifestation of disease: sub-clinical infection
Causal agent: West Nile virus [WNV]
Nature of diagnosis: laboratory (basic)
This event pertains to the whole country

New outbreaks
Outbreak 1: Ilok, Ilok, Ilok, Vukovarsko-Srijemska
Date of start of the outbreak: 26 Jul 2012
Outbreak status: continuing (or date resolved not provided)
Epidemiological unit: farm
Affected animals:
Species / Susceptible / Cases / Deaths / Destroyed / Slaughtered
Equidae / 8 / 2 / 0 / 0 / 0

Outbreak 2: Korog, Korog, Tordinci, Vukovarsko-Srijemska
Date of start of the outbreak: 18 Jul 2012
Outbreak status: continuing (or date resolved not provided)
Epidemiological unit: farm
Affected animals:
Species / Susceptible / Cases / Deaths / Destroyed / Slaughtered
Equidae / 6 / 1 / 0 / 0 / 0

Summary of outbreaks:
Total outbreaks: 2
Total animals affected:
Species / Susceptible / Cases / Deaths / Destroyed / Slaughtered
Equidae / 14 / 3 / 0 / 0 / 0

Outbreak statistics:
Species / Apparent morbidity rate / Apparent mortality rate / Apparent case fatality rate / Proportion susceptible animals lost*
Equidae / 21.43 percent / 0 percent / 0 percent / 0 percent
* Removed from the susceptible population through death, destruction, and/or slaughter

Epidemiology
Source of the outbreak(s) or origin of infection: unknown or inconclusive; vectors
Epidemiological comments: outbreak detected in the framework of active serosurveillance (no clinical signs).

Control measures
Measures applied: no vaccination; no treatment of affected animals
Measures to be applied: no other measures

Diagnostic test results
Laboratory name and type: Croatian Veterinary Institute (CVI), Zagreb (national laboratory)
Tests and results:
Species / test / test date / results
Equidae / IgM-capture ELISA / 21 Aug 2012 / Positive

Future reporting
The event is continuing. Weekly follow-up reports will be submitted.

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[A map showing the locations of the 2 outbreaks in equines in north eastern Croatia, adjacent to the Serbian border, is included in the OIE report at the source URL above.

According to the most recent update of the European Centre for Disease Prevention and Control (ECDC), dated 16 Aug 2012, 58 human cases of West Nile fever have been reported in the EU during 2012, 57 of them in Greece and 1 in Italy. 97 additional cases have been reported from "neighbouring counties": 4 in Israel, 1 in the Palestinian territory, 91 in the Russian Federation, and 1 in Tunisia. The update, with a map, is available at http://ecdc.europa.eu/en/healthtopics/west_nile_fever/West-Nile-fever-maps/Pages/index.aspx.

WNV-positive non-clinical cases, have been reported since July 2012 in equines in Greece. A new follow-up report (no. 2) from Greece is available at http://web.oie.int/wahis/public.php?page=single_report&pop=1&reportid=12226.

The IgM test results are indicative of recent or current WNV circulation in Croatia. - Mod.AS

A HealthMap/ProMED-mail map can be accessed at: http://healthmap.org/r/39-s.]

See Also