About 52% of new Covid-19 cases in Thailand are being caused by the XBB sub-strain of the Omicron variant, according to the Centre for Medical Genomics, with a top doctor calling on the public to get a booster shot before the rainy season arrives.
Sub-strains of the XBB variant have been blamed for the recent spikes of Covid-19 cases across the globe, prompting the World Health Organization (WHO) to reclassify the XBB.1.16 sub-substrain from a "variant under monitoring" to "variant of interest".
