While it's not here yet, transmission of the virus - from mosquito to human and back - has recently been detected in Florida, prompting local officials to plan a response.
Doctors say this is the first case of Zika in the state of Idaho. The woman, who was over the age of 60, is the first reported case of Zika virus infection in the state, which makes the 47th state to report a travel-related Zika virus infection this year, according to state and local health officials; the S-R's full story is online here.
The two mosquito types that can carry the virus, the Aedes aegypti and Aedes albopictus, are now present in the Los Angeles area and other parts of Southern California.
The Chattanooga-Hamilton County Health Department said Wednesday it has received confirmation one person has tested positive for Zika.
A press release by RiverStone Health did not clarify exactly where the man traveled to or the severity of his symptoms. The most common symptoms of infection are fever, rash, muscle and joint aches, and pinkeye.
Because it is mosquito season, WCCHD continues to encourage everyone, especially pregnant women and women planning to become pregnant, to protect themselves from mosquito bites.
Until recently, all cases of the virus have been found only in people who have traveled outside the US or transmitted the virus through sexual contact.
For most, Zika is such a mild disease that people often don't know if they've been infected, but it can lead to severe brain-related birth defects if women are infected during pregnancy.
There is not a vaccine to prevent Zika. Nearly all of those cases are related to travel outside the United States. Idaho has had no confirmed cases of Zika virus infection reported prior to this case.