KPIX CBS Evening News With Scott Pelley January 28, 2016 01:49:00
Research is needed about the risk of transmission through sexual contact and blood transfusion. fd, scott, a vaccine could be three to five years away. >> pelley: jon, thanks very much. john answered questions about zika virus in a facebook chat this evening. you can find his responses on our facebook page. and we'll be right back. my tip is, it your country when you're too weak to put on your uniform. (announcer)you can quit. for free help, call 1-800-quit-now. that gives you better taste and better nutrition in so many varieties. classic. cage free. and organic. only eggland's best. better t...