Zika virus

The spread of Zika is probably limited by window screens and other mosquito-control measures in common use in the U.S. Also, the primary mosquito that carries Zika has a somewhat limited range.

The government is trying to wipe out Zika virus, which has been linked to a severe birth defect. But is it doing enough to help families whose children have been affected?

The Centers for Disease Control is concerned about an increase in a rare birth defect in Brazil that could be linked to the virus. But Zika is not just in Brazil; see a map of where it is spreading.