his mother, rachel, was the former chief of staff of charlene mcquay . a lot of people are talking. new concerns about the spread of the zika virus. there is a new way for it to be spread. it came in the country through sexual contact , not mosquitoes. it's kind of frightening . >> it takes it to a whole other level. the cdc lab test confirmed that the first non-traveler was infected in the dallas area.now, we know it could be spread through sexual contact and efforts are being doubled up to develop a vaccine and educate the public . >> the cdc confirms a person in texas has become infected through sex. venezuela, came home to the us and started showing symptoms. the virus was found in a sexual partner who never left the country. this is one day after the world health organization declared a global emergency. the race is on to develop tests and vaccines. >> if we can develop a single test that can be usable, not only for existing diseases like the zika virus but also prepared for the next disease on the horizon. >> they officials estimate 4 million cases of ego could show up in the