Weeks ago, hardly anyone in the U.S. knew what the Zika virus was. Now the mosquito-borne illness is raising serious fears, especially for pregnant women. Judy Woodruff talks to Dr. Anthony Fauci of the National Institutes of Health about the…

The Zika virus is a mosquito-borne illness predominately in Central and South America, but outbreaks have occurred in Africa, Southeast Asia, the Pacific Islands and the Americas, according to the Centers for Disease Control and Prevention.