How Soon Do Infected People Get Sick?
People typically develop symptoms between 3 and 14 days after they are bitten by
the infected mosquito.
How Is WNV Infection Treated?
There is no specific treatment for WNV infection. In cases with mild symptoms,
people experience symptoms such as fever and aches that pass on their own. In
more severe cases, people usually need to go to the hospital where they can
receive supportive treatment including intravenous fluids, help with breathing
and nursing care.
What Should I Do if I Think I Have WNV?
Mild WNV illness improves on its own, and people do not necessarily need to seek
medical attention for this infection. If you develop symptoms of severe WNV
illness, such as unusually severe headaches or confusion, seek medical attention
immediately. Severe WNV illness usually requires hospitalization. Pregnant women
and nursing mothers are encouraged to talk to their doctor if they develop
symptoms that could be WNV.
What Is the Risk of Catching WNV?
For most, risk is low. Less than 1 percent of people who are bitten by
mosquitoes develop any symptoms of the disease and relatively few mosquitoes
actually carry WNV.
Greater risk for those outdoors a lot. People who spend a lot of time
outdoors are more likely to be bitten by an infected mosquito. They should take
special care to avoid mosquito bites.
People over 50 can get sicker. People over the age of 50 are more likely
to develop serious symptoms of WNV if they do get sick and should take special
care to avoid mosquito bites.
Risk through medical procedures is low. The risk of getting WNV through
blood transfusions and organ transplants is very small, and should not prevent
people who need surgery from having it. If you have concerns, talk to your
doctor before surgery.
Pregnancy and nursing do not increase risk of becoming infected with WNV.