A woman in Cameron County in Texas is apparently the first person in that state to become locally infected with the Zika virus, The Texas Tribune reports. The case, announced today, is the first documented instance of transmission from a mosquito to a person on the mainland of the United States outside Florida. The Texas Department of State Health Services released few details, other than to note that the woman had not recently traveled anywhere with known, local transmission of the virus. The U.S. Centers for Disease Control and Prevention separately issued a press release about what it called the “possible” local transmission, noting that the infected person is a resident of Brownsville, the seat of Cameron County. Brownsville borders Mexico, and officials have long considered it an ideal place for locally transmitted Zika. The city is home to the Zika-carrying Aedes aegypti mosquito, which has caused small outbreaks of chikungunya and dengue there in the past. And although fall has arrived, the temperature in Brownsville for the past few weeks has remained above 27°C, a condition that allows A. aegypti to thrive.
*Correction, 29 November, 11:10 a.m.: The story originally mistakenly reported that the unidentified woman is pregnant. We regret the error.