BA.2, a sub-variant of the Omicron coronavirus variant, has now become dominant globally, representing nearly 86 percent of all sequenced cases, according to the World Health Organization.
First detected in the early days of January, the sub-variant is even more transmissible than its highly contagious Omicron siblings, BA.1 and BA.1.1.
Why is it called the ‘stealth variant’?
That’s because BA.2 is slightly harder to track.
Global Picture
The rise of BA.2 has been blamed for recent surges in China as well as record infections in European countries like Germany and the UK. Yet some European countries are now seeing a slower uptick in new cases, or even a decline.
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