'Wear face masks': WHO urges travellers as new Covid-19 variant XBB.1.5 spreads
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.
Jan 11, 2023, 09:30 AM IST
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.
Jan 11, 2023, 09:30 AM IST