A top U.S. public health official on Sunday warned that the mosquito-borne Zika virus could extend its reach across the U.S. Gulf Coast, after officials last week confirmed it is active in Miami Beach.
"It would not be surprising we would see additional cases perhaps in other Gulf Coast states," Dr. Anthony Fauci, director of the allergy and infectious diseases unit of the National Institutes of Health (NIH), said in an interview with ABC News.