Daniele Santos, 29, holds her son Juan Pedro who is 2-months old and born with microcephaly, as his great-grandmother Maria Jose (R), 66, holds the pacifier for him in front of their house in Recife, Brazil, February 9, 2016. The mosquito-borne virus, which is widespread in Brazil and has been linked to birth defects, has prompted concern among athletes and sports officials around the world as they prepare for the Olympic Games in Rio de Janeiro. REUTERS/Nacho Doce