CDC Director Speaks Out on Fight Against Zika Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Zika is the latest mosquito-borne illness to spread. It is not lethal, but researchers are investigating possible links to birth defects. ( Copyright: claffra / Shutterstock ) Produced by Ellen Frankman and Isabel Angell Produced by PRI and WNYC