GENEVA , Switzerland (AFP) — The World Health Organization on Thursday urged pregnant women not to travel to Rio for the Olympics and urged athletes and visitors to the Games to take precautions to avoid Zika infection. Acknowledging the widespread anxiety surrounding the threat of mosquito-borne Zika, which is rampant in Brazil and which experts agree causes the birth defect microcephaly in babies born to women infected with the virus, WHO issued its first guidelines […]