These maps show
- The new estimated range maps have been updated from a variety of published and unpublished sources.
- These maps show CDC’s best estimate of the potential range of Aedes aegypti andAedes albopictus in the United States.
- These maps include areas where mosquitoes are or have been previously found.
- Maps are not meant to represent risk for spread of disease.
These maps DO NOT show
- Likelihood that these mosquitoes will spread viruses. Shaded areas on the map do not necessarily mean that there are infected mosquitoes in that area.
- Numbers of mosquitoes: These maps do not show how many mosquitoes are living in an area. Mosquito population numbers vary widely across the shaded areas on the map, from high numbers of mosquitoes in some parts of Florida and Texas to rare reports of mosquitoes further north.
- Exact locations of mosquitoes: These maps are our best estimate of where mosquitoes could potentially live. Actual mosquito populations will vary by state and county. Mosquito populations may be found in an area that is not shaded on the maps and may not be found in all shaded areas.
About 1 in 10 pregnant women infected with Zika in the United States last year had a baby or fetus with serious birth defects, according to a study released Tuesday that represents the largest and most comprehensive study of Zika’s consequences for pregnant women.
Women infected during the first trimester of pregnancy had an even higher risk of birth defects, about 15 percent, according to the analysis by the Centers for Disease Control and Prevention.
These estimates are higher than what U.S. health officials have previously reported and underscore the serious risk for birth defects posed by Zika virus infection during pregnancy. With warm weather, a new mosquito season and summer travel approaching, prevention is crucial to protecting the health of mothers and babies, said Anne Schuchat, the CDC’s acting director.
It may seem like Zika is last year’s problem, she said, but that is not true, and pregnant women, their male partners, and clinicians can’t be complacent.
“Don’t let this outbreak be your family’s heartbreak,” she said Tuesday during a telephone briefing with reporters.
Zika poses even greater risk for birth defects than was previously known, CDC reports
Among the report’s key findings:
- A total of 1,297 pregnant women with some evidence of Zika infection were reported to the U.S. Zika Pregnancy Registry in 2016.
- Of the 972 pregnancies that were completed by the end of the year, more than 50 had Zika-related birth defects.
- Among pregnant women with confirmed Zika infections, about 1 in 10 had a fetus or baby with birth defects. Confirmed infections in the first trimester posed the highest risk — with about 15 percent having Zika-related birth defects.
- About 1 in 3 babies with possible Zika infection had no report of Zika testing at birth.
- Only 1 in 4 babies with possible Zika infection were reported to have received brain imaging after birth.