West Nile Virus
Most people who get West Nile virus don't have any symptoms. About 1 in 5 will have a fever and other flu-like symptoms. Feeling worn out could take months to go away completely. A few people get a more serious infection that causes brain swelling, or meningitis. There's a very small chance you could die.
People in 48 of the 50 U.S. states, Africa, Europe, the Middle East, and West and Central Asia have had West Nile.
What type you could get depends on where you are:
- LaCrosse -- the 13 states east of the Mississippi River
- St. Louis -- throughout the U.S., especially Florida and Gulf of Mexico states
- Eastern Equine -- Atlantic, Gulf Coast, and Great Lakes states; the Caribbean; Central and South America
- Western Equine -- states west of the Mississippi River, areas of Canada and Mexico
- Japanese -- Asia and the Western Pacific
Your doctor can give you medicine to ease your fever and sore throat. You'll need emergency care right away for severe symptoms, such as confusion, seizures, and muscle weakness, to prevent brain damage and other complications.
You can get shots to prevent Japanese encephalitis before you travel to the area.
First found in Africa in the 1940s, this virus has spread to South and Central America, Mexico, the Caribbean, Southeast Asia, and the Pacific Islands.
Microcephaly causes a baby's head to be small and not fully develop. Babies with this condition may have developmental and intellectual delays and other problems.