The World Health Organization says there is preliminary evidence that COVID-19 vaccines may be less effective against the Omicron COVID-19 variant.
Full story: https://www.rappler.com/world/global-affairs/covid-19-vaccines-may-be-less-effective-against-omicron-who/
Full story: https://www.rappler.com/world/global-affairs/covid-19-vaccines-may-be-less-effective-against-omicron-who/
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