West Nile Virus

West Nile Virus was accidentally introduced into the United States in 1999 and by 2003 had spread to almost every state. Most people infected with west Nile wither have very mild symptoms or no symptoms at all. Some mild symptoms include: • Sudden onset confusion • Headaches • Stiff necks • Vomiting More sever symptoms include: • Altered Reflexes • Convulsions • Comas • Inflammation of the brain Through the transmission of West Nile as well as diseases such as malaria, yellow fever, spotted fever, and encephalitis, it can be argued that mosquitoes have caused more human deaths than any other animal.