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Omicron sub-variants BA.4, BA.5 may fuel next Covid surge, Top health official warns
Also Read: New covid sub-variant detected in India monitored by WHO: 10 points While they’re more transmissible and better able to evade immune defenses than earlier versions, people who have been vaccinated or previously infected are generally suffering low rates of severe illness, according to Dan Barouch, a virologist at Beth Israel Deaconess Medical Center in Boston. Also Read: Omicron BA.2.75 is alarming! Experts point 3 key reasons why tracking new COVID variant is essential Meanwhile, a new sub-lineage BA.2.75 of the Omicron variant of the coronavirus, which has been detected in India and some other countries, are being closely tracked by the World Health Organisation, Director-General Tedros Adhanom Ghebreyesus said. “In Europe and America, BA.4 and BA.5 are driving waves.