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World

Should we worry about the BA.2 Omicron variant?

20 March 2022

8:53 PM

20 March 2022

8:53 PM

When the Omicron variant (now categorised as BA.1) swept across the world at the end of last year it was seen by optimists as the final chapter in the Covid story – it was so contagious it would infect essentially anyone, but would be far less likely to cause serious illness.

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