- home to perennially popular tourist attractions like Disney World, Universal Studios and SeaWorld - and are believed to be the first cases of the disease actually being transmitted from within the US.
Until now, the infection - which is carried by mosquitos - has been mostly spread by travel to Latin America and the Caribbean, where the disease is most prevalent, or by sexual transmission.
Contracting Zika results in only a slight illness in most people, but the virus is believed to cause profound brain defects in newborns (the most common condition being microcephaly) - hence the danger to pregnant women.
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There is no treatment or preventive vaccine for Zika, and, with the Rio Olympics due to start next weekend in the midst of a continental Zika crisis, the UK authorities recently advised pregnant women to avoid travelling to the Games.
Now, Public Health England has updated its travel advice about Florida, saying:
"The risk in Florida is considered moderate based on the number and spread of cases and their demonstrated ability to implement effective control measures for similar diseases such as dengue - a virus transmitted by the same mosquito.
"Pregnant women should consider postponing non-essential travel to affected areas until after the pregnancy. At present, only a zone of about one square mile in Miami-Dade County is considered at risk of active transmission."
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(Mario Tama/Getty Images)
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Meanwhile, in the UK this week, three patients who had come back to Britain from overseas, tested positive for the virus at hospitals in Calderdale and Huddersfield, West Yorkshire.
Dr Gavin Boyd, infection control lead at Calderdale and Huddersfield hospitals,
told Metro:
"There is no specific treatment for Zika and it usually wears off naturally after two to seven days.
"After a diagnosis patients are cared for by their GPs if needed. There is extremely low risk of contracting Zika virus in the UK as the mosquito that transmits the infection is not present in the UK, however it can be spread by sexual transmission."
of its website devoted to advice about Zika and travel, while the Irish Department of Foreign Affairs
for pregnant women and those trying to become pregnant.
