In Singapore, the XBB variant surged through the population, going from being responsible for 22 percent of the cases to over half of all infected in one week.
Sunday 30 October 2022
Covid fears over new 'nightmare' variants with UK health chiefs 'monitoring closely'
In Singapore, the XBB variant surged through the population, going from being responsible for 22 percent of the cases to over half of all infected in one week.
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