3,100 Pregnant Colombian Women Have Zika

Reuters/Carlos Jasso

More than 3,100 pregnant Colombian women have been infected with the mosquito-borne Zika virus, according to the country's president. It is believed that Zika causes microcephaly in fetuses, which results in brain defects. "The projection is that we could end up having 600,000 cases," President Juan Manuel Santos said on Saturday.