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WHO's top scientist says Omicron could displace Delta but a new vaccine might not be needed.

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Dec 3 (Reuters) - The World Health Organization's chief scientist told the Reuters Next conference on Friday the Omicron variant could become dominant because it is highly transmissible, but that a different vaccine may not be needed.

Soumya Swaminathan also said it was too early to say whether Omicron is milder than other variants of the coronavirus that causes COVID-19 and cast doubt over its origin, saying it was far from certain it emerged in southern Africa.

"It is possible that it could become (the) dominant variant," Swaminathan said, adding that it was however impossible to predict. The Delta variant now accounts for 99% of infections globally, she said.

Scientists in the European Union and Australia are forecasting that Omicron may account for more infections than Delta within a few months. read more

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Swaminathan, a qualified paediatrician from India, raised doubts about the origin of the new variant, which was first detected in southern Africa, where the highest number of cases is also being recorded.

"Where did it originate? We don't know," she said noting it could have originated in countries which do not have enough genomic sequencing.

"We may never know." ...

 

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