Roughly one in ten people may have been infected with COVID-19, leaving the vast majority of the world's population vulnerable to the virus.
That was the claim on Monday from Mike Ryan of the World Health Organization.
"The global numbers belie significant differences as I said in regional epidemiology. Southeast Asia continues to see a surge in cases with Europe and the Eastern Mediterranean regions showing an increase in cases and deaths. The situation in Africa and western Pacific is currently rather more positive. Our current best estimates tell us that about 10 per cent of the global population may have been infected by this virus. This varies depending on country, it varies from urban to rural, it varies between different groups. But what it does mean is that the vast majority of the world remains at risk."
Ryan also said the World Health Organization has submitted a list of experts to take part in an international mission to China to investigate the origin of the coronavirus.
It'll be considered by Chinese authorities.
"At the moment WHO has prepared a list of candidates to join such an international mission from all around the world both through direct contact with member states and a call for participation through the growing network. And a list of candidates has been submitted to the Chinese authorities for their consideration and for next steps in order to deploy that team."
Ryan added that the world is heading into a difficult period as the disease continues to spread, but lessons have been learned from earlier in the year.