"The usual suspect has been caught, not red-handed but red-bellied. Since the beginning of the Zika virus outbreak in Brazil, health authorities and researchers have strongly suspected that the mosquito Aedes aegypti, known for spreading several deadly viruses, was also guilty of spreading Zika from one person to another. But direct evidence had been hard to find. Now, researchers in Rio de Janeiro, Brazil, report that they have found the Zika virus in wild-caught A. aegypti. The researchers did not find the virus in other mosquito species they captured in neighborhoods where Zika was spreading, which strengthens the case that A. aegypti is the main vector driving the outbreak."
Essentially everything South of the Northern border of North Carolina, Tennessee, Arkansas, Oklahoma, New Mexico and Arizona, PLUS all of Virginia, West Virginia, Kentucky, Maryland, Delaware, New Jersey and Puerto Rico, and half of California and Ohio with parts of Hawaii, Pennsylvania, Indiana, Missouri and Kansas.
Roughly the Southern half of the continuous 48 states.