June 29, 2020 / 3:55 PM / 12 days ago

WHO sees 'tremendous work' towards COVID-19 vaccine, but no guarantee

FILE PHOTO: A logo is pictured on the World Health Organization (WHO) headquarters in Geneva, Switzerland, November 22, 2017. REUTERS/Denis Balibouse/File Photo

GENEVA (Reuters) - The World Health Organization sees tremendous work towards finding a safe and effective vaccine to prevent COVID-19, but there are no guarantee of success, the head of its emergencies programme, Mike Ryan, said on Monday.

Editing by Alison Williams

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