Most Covid-19 cases linked to mild variant
The NB.1.8.1 strain has become the dominant Covid-19 variant in Thailand over the past year, although health authorities say there is no evidence it spreads faster or causes more severe illness.
The NB.1.8.1 strain has become the dominant Covid-19 variant in Thailand over the past year, although health authorities say there is no evidence it spreads faster or causes more severe illness.