More research needed on asymptomatic transmission of COVID-19, says WHO

The World Health Organization (WHO) Director-General Tedros Adhanom Ghebreyesus on Wednesday said that more research needs to be done to better understand the extent to which COVID-19 is being spread by people who don't show symptoms. 

"Since early February, we have said that asymptomatic people can transmit COVID-19, but that we need more research to establish the extent of asymptomatic transmission," the WHO chief said at a virtual press conference from Geneva.

"That research is ongoing, and we're seeing more and more research being done," he added. 

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