The United States has the biggest outbreak of West Nile Virus according to the Centers for Disease Control and Prevention

According to and yahoo news, as of last Tuesday were 1,118 cases of the disease reported. That's the highest number since 1999.

So far, 41 people have died from West Nile infections. About 630 people have developed the rare neuroinvasive form of the disease, which affects the nervous system. The other cases involved West Nile fever, which can cause fever, headache, body aches, nausea, vomiting.

Texas has been hit hardest by the outbreak with 537 cases of West Nile.

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