Caio Julio Vasconcelos who was born with microcephaly, an abnormally small head, is kissed by a therapist at the Institute for the Blind in Joao Pessoa, Brazil, in February. (Andre Penner/Associated Press) The UN health agency says sexual transmission of Zika is more common than first thought, so its updated advice to women who have been in areas hit by the virus tells them to … Read More