West Nile Fever in USA - bi-weekly summary

Sporadic cases of West Nile fever have been reported by 39 states and the District of Columbia. There have been 18 deaths among the 662 infected people. States reporting 40 or more cases include Texas (125 cases), South Dakota (98 cases), California (78 cases), Colorado (49 cases), Nebraska (46 cases) and Arizona (40 cases). States reporting at least 10 infected people include Illinois, Kansas, Louisiana, Michigan, Minnesota, Mississippi and North Dakota.

Visit our Health Library for more information on exposure to and the prevention of West Nile Fever.

Advice For Travellers

The risk for the general traveller is very low. However, in many states, horses and trapped mosquitoes have been infected with this virus, and they provide a source for continued transmission of this virus. Since there is no vaccine or treatment for West Nile fever, travellers can minimize their risk of exposure by taking all necessary precautions to avoid mosquito bites.

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