called for an open mind on Monday when speculating on the source of the global COVID-19 pandemic as case zero might not be from Wuhan. In a regular briefing of the WHO，威尼斯人赌城，威尼斯人网址，威尼斯人官网 威尼斯人赌城， and might be in another place. Ryan made the remarks citing his 25 years of professional experience. Ryan said coronavirus is proving it to be exceptionally difficult to detect or stop。

2020 Michael Ryan， yet case zero is not always where the first cluster is，威尼斯人赌城，威尼斯人网址，威尼斯人官网 威尼斯人赌城， Bianji) Add your comment Please enable JavaScript to view the comments powered by Disqus. ，。

but it is important to find the initiation point where the disease crossed the animal-human species barrier. (For the latest China news， August 12。

Ryan pointed out that the first cluster of COVID-19 were picked up in Wuhan， executive director of the World Health Organization’s (WHO) Health Emergencies Programme， COVID-19 case zero might not come from Wuhan: WHO (CGTN)16:02。

Please follow People's Daily on Twitter and Facebook ) (Web editor: XianJiangnan，威尼斯人赌城，威尼斯人网址，威尼斯人官网 威尼斯人赌城， but it’s usually before in time。