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TX Reports 1st Likely Case of Local Zika Infection

來源:WebMD Medical News 作者: 2016-11-30
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摘要: 28, 2016 (HealthDay News) -- Texas reported its first possible case of locally transmitted Zika infection on Monday。 If confirmed, Texas would join Florida as the only states with local transmissions of the mosquito-borne illness linked to birth defects。 “Texas is doing the right thing by incr......


By Robert Preidt

HealthDay Reporter

MONDAY, Nov. 28, 2016 (HealthDay News) -- Texas reported its first possible case of locally transmitted Zika infection on Monday. If confirmed, Texas would join Florida as the only states with local transmissions of the mosquito-borne illness linked to birth defects.

The case involves a woman who lives in Brownsville, near Mexico, and she had no travel-related risk factors for Zika infection, the U.S. Centers for Disease Control and Prevention said. The virus is typically spread through the bite of the Aedes aegyptimosquito, although it can also be transmitted through sexual contact.

"Even though it is late in the mosquito season, mosquitoes can spread Zika in some areas of the country," CDC Director Dr. Tom Frieden said in an agency news release. "Texas is doing the right thing by increasing local surveillance and trapping and testing mosquitoes in the Brownsville area."

As of Nov. 23, an estimated 182 of more than 4,400 reported cases of Zika infection in the United States were spread by mosquitoes, according to the CDC. Most of the infections reported in the United States occurred in areas of Latin America and the Caribbean, where Zika cases have been at epidemic proportions.

Thirty-six of the cases in the United States were believed to be sexually transmitted and one was the result of a laboratory exposure. Those numbers do not include the Texas case, the CDC said.

Most adults who are infected with Zika experience mild symptoms. But, the babies of women who are infected while pregnant can experience devastating birth defects, the most common of which has been microcephaly, where the brain is underdeveloped and the head is abnormally small.

And surprising new research released last week reported that fetuses exposed to the Zika virus can look normal at birth but later show signs of microcephaly and other brain abnormalities.

In that study, scientists found that 13 infants in Brazil who were exposed to the virus in the womb had normal head size as newborns, but subsequently experienced slower head growth.


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