West Nile Virus
Fight the Bite- Avoid mosquitoes!
West Nile Fever in Humans
Most WNV infections are mild and often clinically unapparent. Approximately 20% of those infected develop a generally mild illness. The incubation period is thought to range from 3 to 14 days. Symptoms generally last 3 to 6 days.
How to protect yourself
- Avoid spending time outside when mosquitoes are most active.
- When outdoors, wear long pants and long sleeves when appropriate.
- Apply DEET insect repellent according to instructions.
- Repair or replace damaged screens around windows – insure tight fitting.
- Remove all sources of standing water.
- Report heavy mosquito populations to Vector Control.
Symptoms of West Nile Fever-Humans
Reports from earlier outbreaks describe the mild form of WNV infection as a febrile illness of sudden onset often accompanied by:
- malaise headache
- anorexia myalgia
- nausea rash
- vomiting lymphadenopathy
- eye pain
Advanced Age Groups: The most significant risk factor for developing severe neurological disease is advanced age. Encephalitis is more commonly reported than meningitis. Approximately 1 in 150 infections will result in severe neurological disease.
Rash: A minority of patients with severe disease developed a maculopapular or morbilliform rash involving the neck, trunk, arms, or legs.
Musculoskeletal: Several patients have experienced severe muscle weakness and flaccid paralysis.
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