There is no evidence of an ongoing, active transmission of Zika virus to others, according to the health department.
Health officials said the case emerged after a couple had traveled to Cuba and one partner became ill with symptoms consistent with Zika shortly after returning to Florida.
An epidemiological investigation by the health department suggests that the traveler contracted Zika in Cuba, was bitten by a mosquito in Florida, and the insect then spread the virus to the infected person's partner.
So far in 2017, there have been 187 cases of Zika in Florida, with 154 of them being travel related. A test conducted this week showed evidence of a past Zika infection.
The health department has notified mosquito control, which will take measures to reduce the number of mosquitoes in the Manatee County area.
It is critical for people who recently traveled overseas to an area with Zika to prevent mosquito bites for at least three weeks after they return home. The virus also can be transmitted sexually. Centers for Disease Control and Prevention (CDC). Zika can persist in semen over extended periods of time. The virus poses the greatest threat to regnant women, who are at greatest risk from Zika because the virus can cause birth defects and neurological problems in the fetus. If a Zika zone was established, which it has not, the health department would specify the location. Mosquitoes can breed in as little as one teaspoon of water so it is critical to drain all sources of standing water to keep mosquitoes from multiplying.