WHO director-general warns there may never be a 'silver bullet' for COVID-19

World Health Organization Director-General Tedros Adhanom Ghebreyesus.
(Image credit: Fabrice Coffrini/AFP via Getty Images)

World Health Organization Director-General Tedros Adhanom Ghebreyesus said on Monday he is hopeful that the six coronavirus vaccine candidates now in their third phase of clinical trials will be effective, but warned that there is "no silver bullet at the moment and there might never be."

Until there is an approved vaccine, the world must follow "the basics" of disease control, he said, which involves testing, isolating, tracing, and quarantining, as well as social distancing, regular hand washing, and wearing masks. "The message to people and governments is clear: Do it all," Tedros added.

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Catherine Garcia, The Week US

Catherine Garcia has worked as a senior writer at The Week since 2014. Her writing and reporting have appeared in Entertainment Weekly, The New York Times, Wirecutter, NBC News and "The Book of Jezebel," among others. She's a graduate of the University of Redlands and the Columbia University Graduate School of Journalism.