Zika virus

That's what 76 percent said in a recent Kaiser Family Foundation survey. Half the respondents also said they'd be uncomfortable traveling to places in Florida where mosquitoes are spreading Zika.

Before the games, computer scientists weren't worried about the spread of Zika. But some public health experts were. What does the data show?

The recommendations from the Food and Drug Administration represent a major expansion in testing blood for Zika. The agency had earlier advised testing only in areas with an active outbreak.

The organization is going door to door in some of the city's poorest neighborhoods. The goal: Reach 25,000 households in six weeks with information about Zika prevention and family planning services.

The Centers for Disease Control and Prevention expanded its advice to travelers, advising pregnant women to avoid parts of Miami Beach where the Zika virus is spreading.

For some obstetricians and gynecologists, Zika virus is transforming how they practice medicine. Talks with pregnant patients now include testing for the virus and the risks of long-term effects.