`Wear face masks`: WHO urges travellers as new Covid-19 variant XBB.1.5 spreads
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XBB.1.5 is the most transmissible Omicron subvariant detected so far. It accounted for 27.6% of Covid-19 cases in the US last week.
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XBB.1.5 is the most transmissible Omicron subvariant detected so far. It accounted for 27.6% of Covid-19 cases in the US last week.
Full ArticleThree years into the pandemic and yet another new variant of the coronavirus has emerged. The omicron subvariant known as XBB.1.5..