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Last Updated: Thursday, 3 July 2003, 09:39 GMT 10:39 UK
West Nile Disease
Mosquitoes
Mosquitoes can carry West Nile virus
West Nile Disease is a virus which is spread through the bite of an infected mosquito.

Last year alone it killed 280 people in the States and recent tests have shown that it could be present in UK birds, although there have been no cases of the disease in the UK.


What is West Nile Disease?

West Nile virus was first discovered in the West Nile area of Uganda in 1937.

Since then it has been found in a number of other countries, including Israel, Africa, Asia and parts of Eastern Europe.

The most recent outbreaks have been in the States, where two thirds of the East Coast states have reported cases - there has even been a case of West Nile in California.

The UK has had no human cases of the disease, although researchers from Oxford University recently found West Nile antibodies in non-migratory birds in the UK, which suggest the presence of the virus.

How is it spread?

The virus is normally transmitted by mosquitoes which suck the blood of infected birds and then feed on humans.

There is no evidence to suggest that West Nile can be spread from person to person.

How do I protect myself?

The best way to protect yourself is to avoid being bitten by a mosquito.

The mosquitoes which carry West Nile Disease bite at dawn, dusk and early evening, so if you are travelling to an area where the disease is prevalent you should either stay indoors or wear long sleeved shirts and long-trousers and wear insect repellent.

People travelling with young children should ensure that they use a specially prepared insect repellent, rather than the adult version.

What symptoms should I look out for?

A sufferer can incubate the disease for up to a fortnight after being bitten.

Many of those who have become infected will either have no symptoms, or will have mild flu-like symptoms, which last a couple of days.

These symptoms can range from fever, headache and body aches to skin rashes on the trunk of the body and swollen lymph glands.

Less than 1% of those who become infected will get a serious form of the disease. They can suffer from West Nile encephalitis, or meningitis and sometimes even die.

Out of about 1,000 people who became infected in Europe recently, there were about 40 deaths.




SEE ALSO
Deadly virus spreads across US
08 Aug 02 |  Americas
West Nile virus death toll rises
28 Aug 02 |  Americas

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