Zika virus is primarily spread to people through mosquito bites. The virus can be spread from mother to child. Spread of the virus through blood transfusion and sexual contact has also been reported.
Most people infected with the virus have mild or no symptoms. For those who do develop symptoms, illness is generally mild and typically lasts a few days to a week. The most common symptoms of Zika virus disease are fever, rash, joint pain, and conjunctivitis (red eyes).
Severe disease requiring hospitalization is uncommon and fatalities are rare. An increase in Guillain-Barré syndrome was noted during an outbreak of Zika virus in French Polynesia in 2014. An increase in microcephaly was noted during an outbreak of Zika virus in Brazil in 2015.
Zika Virus – June 29, 2016.
Texas has had 49 reported cases of Zika virus disease. Of those, 48 were in travelers who were infected abroad and diagnosed after they returned home; one of those travelers was a pregnant woman. One case involved a Dallas County resident who had sexual contact with someone who acquired the Zika infection while traveling abroad.
Texas Zika Cases by County:
Note: Zika case data for Texas will be updated each weekday no later than 11 a.m.
June 24, 2016 - Weekly Texas Data for National Zika Pregnancy Registry
Texas has reported to the CDC one confirmed case of Zika in a pregnant woman who traveled abroad to an area with Zika transmission. There have been 22 additional pregnancies in Texas with laboratory evidence of Zika infection since tracking and testing for Zika began, but all of those 22 had no symptoms and do not meet the Zika case definition. Texas provides this data to the CDC’s Pregnancy Registry weekly.
The registry casts a wider net – beyond confirmed Zika cases – to track and follow pregnancies that may have been impacted by Zika. States are reporting confirmed cases but also the number of pregnancies that can’t be confirmed to be Zika-infected but have some lab indication of a flavivirus infection. Flaviviruses are known to cross-react during confirmatory testing, making it difficult to determine if the person was infected with Zika or some other flavivirus.
Who Texas Counts for the CDC Registry
Any pregnant women residing in Texas whose testing for Zika virus infection yielded positive or inconclusive test results, regardless of whether the woman has symptoms.
Who Texas Counts as Zika Pregnancy Case
To be reported as a Zika pregnancy case, the pregnant woman has to have had a rash or fever plus at least one other symptom, and also have a positive Zika-specified test result.
Note: Pregnancy Registry counts will be updated weekly. No other details will be provided about Texas pregnancies reported to the CDC due to privacy concerns and that it is not warranted from a public health standpoint.