The emerging BA.2 Omicron sub-variant does not appear to be more severe than the original BA.1 – but is more transmissible and more able to infect vaccinated people, according to reports.The subvariant, one of at least four descendants of Omicron, has been detected in 57 countries since emerging in southern Africa 10 weeks ago, the World Health Organization said.It is widely being dubbed “stealth Omicron” because of a genetic trait that makes it harder to detect.
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