West Nile Fever
Most people who become infected with West Nile virus (WNV) develop no clinical illness or symptoms. In previous outbreaks in the Northern Hemisphere, an estimated 80% of people who became infected with WNV never developed symptoms attributed to the infection. Of the approximately 20% of infected people who do develop symptoms, most develop what has been termed West Nile fever. The incubation period for WNV infection is thought to range from about 2-14 days, although longer incubation periods have been documented.
Clinical Features of West Nile Fever
- Skin rash on the trunk of the body (occasionally)
- Swollen lymph glands (occasionally)
- Eye pain (occasionally)
Information provided by the CDC. Additional information is available at:
The links below provide information for clinicians that may be useful in assessing patients that show symptoms of West Nile virus.
County of San Diego Physician Bulletin Archives:
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WNV Or Other Vectors Contact: