ZIKA virus is sexually transmitted. SEE DETAILS

                                                                                                                                             Zika has been sexually transmitted in Texas, the Centers for Disease Control and Prevention said Tuesday. It is the first known case of the virus being locally acquired in the continental United States in the current outbreak.

The case, announced by Dallas County health officials, involved a patient who had sex with someone who had recently returned from Venezuela infected with the mosquito-borne virus.

In

a statement to CNN, the CDC said it confirmed the test results showing Zika present in the blood of a "nontraveler in the continental United States." They stressed that there was no risk to a developing fetus in this instance.                                                                                                                                                                                                                                                                                                                              Before this case, there have been only two documented cases linking Zika to sex. During the 2013 Zika outbreak in French Polynesia, semen and urine samples from a 44-year-old Tahitian man tested positive for Zika even when blood samples did not. Five years before that, in 2008, a Colorado microbiologist named Brian Foy contracted Zika after travel to Senegal; his wife came down with the disease a few days later even though she had not left northern Colorado and was not exposed to any mosquitoes carrying the virus.