The prevalence of Covid-19 infections in England rose to around one in 60 people in the week ending November 27, led higher by the dominant Delta variant rather than the newly identified Omicron, Britain's Office for National Statistics (ONS) has said.

The prevalence was up from one in 65 reported the previous week, the ONS said, adding that 99 per cent of all coronavirus infections which were sequenced were genetically compatible with the Delta variant.

"To date, we have not identified any infections compatible with the new Omicron variant (B.1.1.529) among our survey participants," the ONS said.

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