Making its way from Latin America to the U.S. shores, the Zika virus is spreading. And as the mosquito population grows — and the summer rapidly approaches — concern is rising over a potential U.S. outbreak.
On Friday, a 70-year-old man in Puerto Rico infected with the disease died from complications, according to health officials, becoming the first U.S. casualty from the deadly infection. In an interview with CNBC, a top public health official warned the United States could very well see more instances.
"The mosquitoes that carry Zika are in parts of the United States," Dr. Denise Jamieson, chief of the women's health and fertility branch of the Centers for Disease Control and Prevention, told "On the Money" in a recent interview.
"In the continental U.S., there are no cases of local transmission from mosquito bites," Jamieson said, but added that in Puerto Rico "there are ongoing cases of Zika virus." The island has become ground zero for the virus, where hundreds have been diagnosed.
There's currently no vaccine for Zika, but Jamieson told CNBC that "researchers are working" on one. "There are some vaccines to other related viruses so researchers have a jump-start on that. But it's still going to take time."
"In the meantime, it's really important that pregnant women know how to protect themselves" from Zika. "Notably, avoid mosquito bites."