Dr @mvankerkhove talks about an Omicron recombinant called XE, its transmissibility, and how WHO monitors changes in the virus that causes #COVID19 ⬇️
— World Health Organization (WHO) (@WHO) April 6, 2022
EMA and @ECDC_EU issue advice on 4th doses, or 2nd booster, of mRNA #COVID19vaccines. Read our full statement.
— EU Medicines Agency (@EMA_News) April 6, 2022
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