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West-Nile virus now confirmed in Austria

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West-Nile virus now confirmed in Austria
Culex quinquefasciatus, the Southern House Mosquito. Photo: Salvadorjo/Wikimedia
18:28 CEST+02:00
Recent scares over deadly cases of Salmonella, Listeria, and Ebola have raised awareness of blood- and fluid- borne pathogens, with the latest now-confirmed case of the West-Nile virus appearing in Austria.

The Austrian ministry of health announced on Wednesday that a Viennese woman had been tested while donating plasma, and a positive test result was found for the virus.  Such screening is routinely performed, to prevent contamination of blood being stored for transfusion.

The West Nile virus (WNV) is a mosquito-borne zoonotic arbovirus that was first found in Uganda in the 1930s.  

It has spread inexorably around the world wherever mosquitos may be found, due to the travelers coming from infected areas.  It arrived in New York in 1999, and has subsequently spread across the USA, Canada and into Western Europe.

While not as directly dangerous as Ebola or even Malaria, the West Nile virus can in rare cases lead to a debilitating illness with a neurological basis, including meningitis and encephalitis.

There is currently no vaccine to protect against WNV, therefore prevention is the best defense.

Now that a case has officially been detected in Austria, public health officials will step up efforts at screening.  In 2012, WNV killed 286 people in the United States, with Texas being especially hard hit.

The disease is relatively unknown in Europe, with Greece, Serbia and Russia reporting cases in 2014.

According to the European Centre for Disease Prevention and control, as of 14 August 2014, 28 human cases of West Nile fever have been reported since the beginning of the 2014 transmission season:
- 1 confirmed in the EU by Greece, in East Attica (Attiki);
- 27 (probable and confirmed) in neighbouring countries as follows:
 • 7 in Russia, from Samarskaya and Belgorodskaya oblasts;
 • 5 in Serbia, from Grad Beograd, Juzno-backi district and Nisavski districts;
 • 13 in Bosnia and Herzegovina from Republika Srpska area;
 • 2 in Israel from Netanya (Central District) and Tel Aviv.
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