BA.4 And BA.5 Omicron: How Worried Should We Be? - The ASEAN Post

6/20/2022 12:00:00 AM2 years 10 months ago

Ever since it first emerged, COVID has been mutating or shape-shifting.

Two new fast-spreading subvariants of Omicron are causing fresh surges of COVID around the world. BA.4 and BA.5 were first identified in South Africa and may soon become the dominant strains in Euro… [+3248 chars]

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