The head of the government's infectious disease center said the states along the Gulf Coast are most at risk for an outbreak of the Zika virus, pointing specifically to Louisiana as it deals with destructive flooding.

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"I would not be surprised if we see cases in Texas, in Louisiana — particularly now, where you have a situation with flooding in Louisiana," Dr. Anthony Fauci, director of the National Institutes of Health said on ABC's "This Week."

"When you have a sub-tropical, or semi-tropical region with the right mosquitoes, and individuals who have travel-related cases that are in the environment, it would not be surprising that we will see additional cases, not only in Florida, but perhaps in other of the Gulf Coast states."

The Centers for Disease Control and Prevention (CDC) last week issued a travel warning to Miami-Dade County in Florida. The CDC said pregnant women and their partners should postpone "nonessential travel to all parts of Miami-Dade County."

Zika is most commonly spread by mosquitoes in tropical climates. The newborns of women who are pregnant when they contract the virus can be born with microcephaly, a condition that causes babies to have abnormally small heads due to unusual brain development.

Fauci said on Sunday that he doesn't expect a widespread outbreak of Zika in the continental United States.

"I do not think, although we need to be prepared for it, that we're going to see a diffuse, broad outbreak in the United States because of a number of issues. Particularly, the conditions in our country ... would not really make that a very likely happening," Fauci said.

He said he expects that the Zika virus could be around for a year or two.

"Hopefully, we get to a point to where we could suppress it so that we won't have any risk of it," he said.