While the chances are rare, reinfection with BA.2 can occur shortly after initial BA.1 infection, according to a study by Danish researchers.
The #OmicronVariant can be divided into 3 subtypes: BA.1, BA.2 and BA.3. pic.twitter.com/rAKq0vaENP— IANS Tweets (@ians_india) February 23, 2022
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