World Cup Fans Warned Over S.Africa Fever Outbreak

Stephanie Nebehay, Reuters, May 4, 2010

Tourists in South Africa including soccer fans heading to the World Cup must guard against mosquito bites and avoid contact with raw meat due to an outbreak of Rift Valley fever, the World Health Organization said on Tuesday.

Officials in South Africa, the host of the 2010 World Cup from June 11 to July 11, have reported 172 human cases of the animal viral disease this year, including 15 deaths, it said.

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A female German tourist who visited game reserves was confirmed as having the disease upon return from South Africa last month, the WHO said in a statement. Three other travelers fell ill with similar symptoms but all four have recovered.

The virus usually causes relatively mild flu-like symptoms and neck stiffness in people, progressing sometimes to hallucinations, dizziness or even coma, according to the WHO.

A small percentage of victims develop a hemorrhagic form which causes them to vomit blood, pass blood in feces, or bleed from the nose, gums, or skin. Half of such patients die.

Human cases have been confirmed in Free State Province, Eastern Cape Province, Northern Cape Province, Western Cape and North West Province, most after contact with infected livestock.

MOSQUITO BITES

The WHO, a United Nations agency, said it was not advising any international travel restrictions to or from South Africa.

“However, WHO recommends that visitors to South Africa, especially those intending to visit farms and/or game reserves, avoid coming into contact with animal tissues or blood, avoid drinking unpasteurized or uncooked milk or eating raw meat.”

“All travelers should take appropriate precautions against mosquito bites (use of mosquito nets, insect repellents),” it said.

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There is also some evidence that humans may become infected with Rift Valley Fever by drinking the unpasteurized or uncooked milk of infected animals, it said.

The virus can be transmitted through the handling of animal tissue during slaughtering or butchering, assisting with animal births, veterinary procedures or from disposing of carcasses.

Herders, farmers, slaughterhouse workers and veterinarians are at higher risk of infection.

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