Outdoor workers in areas with large populations of those mosquitoes should take extra precautions to avoid mosquito bites, according to the Centers for Disease Control and Prevention (CDC), which is working to ensure people living and working in areas where Zika is spreading or in areas where Zika could spread through the local mosquito population know how to protect themselves from infection.

Although the only confirmed cases of local transmission (not travel-related) have been in South Florida, many areas in the United States have the types of mosquitoes that can become infected with and spread Zika virus.