No evidence yet to support a change in vaccines as they are 'highly effective', the World Health Organization says.
from Al Jazeera – Breaking News, World News and Video from Al Jazeera https://ift.tt/3lzUmFA
from Al Jazeera – Breaking News, World News and Video from Al Jazeera https://ift.tt/3lzUmFA
WHO chief scientist urges people not to panic over Omicron
![WHO chief scientist urges people not to panic over Omicron]()
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December 03, 2021
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