The World Health Organization has said there have been no confirmed cases of Zika among travellers or athletes at the Rio Olympics.
The WHO said its prediction that the Games would not fuel the spread of the Zika virus was being proved correct. Some health experts had criticised the organisation for not calling for the Games to be moved or postponed.
At a news conference in Geneva, the head of the WHO's health emergency programme Peter Salama, said: "We don't have any confirmed cases of Zika amongst travellers or amongst indeed athletes."
And he said of the Paralympics, due to start on 7 September: "We are optimistic that the same risk assessment will hold and there will be little additional risks."
