The West Nile virus shows up in the U.S., and within 10 years, infects 1.8 million people.
Date: 1999
By 2019, over 50,000 cases of illness will have been reported to the Centers for Disease Control and Prevention (CDC). Most often, people are infected when mosquitoes bite carrier birds, and then bite humans, and not through human-to-human transmission. This virus impacts neurological function.