Explained: What are BA.4 and BA.5 sub-variants of Omicron, and can they lead to a Covid surge in India? - The Indian Express

The European CDC is anticipating a significant overall increase in Covid-19 cases in the coming weeks and months due to the BA.4 and BA.5 sub-variants of Omicron. What are these new strains, and could they trigger a fourth wave in India as well?

The European Centre for Disease Control and Prevention has declared the BA.4 and BA.5 sub-variants of Omicron as ‘variants of concern’. Being sub-variant of Omicron, the World Health Organisation (WH… [+4844 chars]

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