New Omicron subvariants BA.4 and BA.5 ‘not a surprise’: Ong Ye Kung

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SINGAPORE: The discovery of new Omicron subvariants is “not a surprise at all”, as it is known that the virus that causes COVID-19 will continue to mutate, said Health Minister Ong Ye Kung on Wednesday (May 18). Speaking on the sidelines of a media event, Mr Ong noted how cases of the BA.4 and BA.