U.S. health officials this week added two more Caribbean islands to a Zika virus travel alert for pregnant women: Aruba and Bonaire.
There are about 30 destinations with outbreaks of the mosquito-borne virus, mostly in the Caribbean and Latin America.
Meanwhile, the UC Davis Health System on Saturday will hold an informational forum in Sacramento about the virus to help answer people's questions.
"In Sacramento in particular we don't have the right mosquitoes that we know of yet," said Dr. Chris Barker on Insight with Beth Ruyak. Barker is one of the panelists scheduled to appear at tomorrow's forum. He's an epidemiologist who specializes in the surveillance and control of mosquito-borne viruses.
"There are the right mosquitoes in different parts of California," said Barker. "So I'm concerned to the extent that I think we ought to be vigilant and watching for imported cases and doing everything we can to keep mosquito populations low and from spreading into new areas."
Earlier this month, health officials confirmed that a person living in Yolo County, who had traveled out of the country, had tested positive for Zika.
Tomorrow's forum is from 3 to 4 p.m. at the UC Davis Mind Institute Auditorium.
The Zika virus is suspected of causing a rare birth defect of babies with abnormally small heads.