The Zika bearing mosquitoes do not travel. The entire area of risk in Miami is less than one square mile. The real areas of risk are dense urban areas where those form of mosquitoes can survive. Here is what the real authorities in our government have to say on the subject.

http://wwwnc.cdc.gov/travel/destinations/traveler/none/british-virgin-islands

If you are worried about Zika try to stay out of the urban tropical cities.