Omicron variant now the dominant strain of COVID-19 in the Arun district
The Wellcome Sanger Institute analysed more than 34,000 positive Covid-19 tests taken in the week to January 1 to determine which variant they were.
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Hide AdIn more than 30 local authority areas, Omicron was the only variant found.
The number of Delta samples found across England has fallen dramatically in recent weeks - suggesting that Omicron cases are replacing rather than adding to those caused by Delta.
But there are also pockets of the country where Delta remains a significant minority of cases.
In the Arun district, 52 out of the 53 positive cases analysed were reported to have a non-Delta variant.
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Hide Ad49 out of the 52 variations were the Omicron variant of the coronavirus.
This means that 94.2 per cent of the positive COVID-19 variations were of the Omicron variant.