First reports of the West Nile virus rearing its ugly head in the U.S. were in 1999. In New York 62 contaminations and 7 deaths were confirmed.
Since then the virus has caused hundreds of deaths. The CDC not only reports thousands of cases of West Nile virus throughout the US but also Dengue Fever is taking its toll. Malaria outbreaks are still scarce in the US but the mosquito is wreaking havoc as it is.
In 2008 alone, the CDC reported 1,356 cases of West Nile throughout the U.S. and 44 deaths. In 2009 and 2010, outbreaks of dengue fever were reported in the U.S.