what do we know about the new Omicron sub-variants? - OI Canadian

BA.4 and BA.5, the two new variants of Omicron, are of concern to the European Center for Disease Prevention and Control and Public Health France. Omicron has certainly circulated a lot in France, and

BA.4 and BA.5, the two new variants of Omicron, are of concern to the European Center for Disease Prevention and Control and Public Health France. Omicron has certainly circulated a lot in France, … [+2118 chars]

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