The WHO said such a move would not significantly alter the spread of the virus, which has been linked to serious birth defects. In an open letter to the health body, more than 150 leading scientists and doctors have stated that the new findings about Zika make it unethical for the Games to go ahead. They also said the global health body should revisit its Zika guidance. However, the International Olympic Committee has stated that it sees no reason to delay or move the Games because of the mosquito-borne disease. The outbreak began in Brazil a year ago, but now more than sixty countries and territories have continuing transmission. Watch Live:.