CDC expands Zika virus travel warning

The CDC has expanded to 22 the number of countries and territories pregnant women should not visit due to the risk of contracting Zika virus, a mosquito-transmitted disease that may be causing microencephaly in infants born to infected mothers. Although initial concern has focused on Brazil, where 3,893 suspected cases of microcephaly have been reported with a major uptick since 2010, the World Health Organization said today that the virus will likely reach all of the Americas except Chile and Canada. Reuters (1/25), CNN (1/22)