4 Zika cases likely came from Florida mosquitoes

2016-07-29 16:27
A natural resources officer takes water samples  to check for the presence of mosquito larvae in Pembroke Pines, Florida. (Lynne Sladky,AP)

A natural resources officer takes water samples to check for the presence of mosquito larvae in Pembroke Pines, Florida. (Lynne Sladky,AP)

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Orlando - Florida's governor said on Friday the state likely has the first cases of Zika transmitted by mosquitoes on the US mainland.

Governor Rick Scott said during a news conference in Orlanda that no mosquitoes in the state have tested positive for Zika. But he said one woman and three men in Miami-Dade and Broward counties likely contracted the virus through mosquito bites.

More than 1 650 Zika infections have been reported in the US, but the four patients in Florida would be the first not linked to travel outside the US mainland.

Scott said health officials believe the infections occurred in a small area just north of downtown Miami.

Zika primarily spreads through bites from tropical mosquitoes. In most people, the virus causes only mild illness, but infection during pregnancy can lead to severe brain-related birth defects for the fetus.

Miami-Dade County has reported 96 Zika cases, the most in Florida so far, and Broward County has 55. Until Friday, health officials said all the cases stemmed from international travel.

Zika is mainly spread by mosquitoes, as well as sex. There is no vaccine.

The tropical mosquito that spreads Zika and other viruses is found in the southern US. While health officials have predicted that mosquitoes in the continental US would begin spreading Zika this summer, they also have said they expect only isolated clusters of infections and not widespread outbreaks.

The US Food and Drug Administration has told blood centres in Miami-Dade and Broward counties to suspend collections until they can screen each unit of blood for the Zika virus with authorised tests.

The FDA also has recommended that neighbouring counties implement the same precautions, and visitors to South Florida in the last month are urged to defer donations as well.

The FDA previously advised US blood banks to refuse donations from people who recently travelled to areas outside the country that have Zika outbreaks.

Florida's main supplier of blood, OneBlood, said it was working as quickly as possible to comply with the FDA's "unanticipated" request and would start testing all its collections for Zika on Friday.

Read more on:    us  |  zika virus

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