New Omicron sub-lineages detected in Bengaluru, BA.2 continues to be dominant Covid strain in Karnataka

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According to a June 21 report of Indian SARS-CoV-2 Consortium on Genomics (INSACOG), 44 samples from Bengaluru sent for genome sequencing between June 2 and June 9 were found to be infected with BA.3, BA.4 and BA.5 sub-lineages of Covid variant Omicron.
This development comes after a recent sewage surveillance report had also shown the presence of BA.4 and BA.5 sub-lineages of Omicron in the city. On the advice of the Covid technical advisory committee (TAC), the health department on June 7 set up a sewage surveillance appraisal committee headed by the committee’s chairman M K Sudarshan.
Meanwhile, Omicron’s sub-lineage BA.2 continues to be the dominant strain in Karnataka. According to genome sequencing data shared by Health Minister Dr Sudhakar K on Twitter Wednesday, 99.20 per cent of all samples sequenced in the May-June period (2198 of 2215) showed Omicron’s presence, of which BA.2 accounted for 89.40 per cent (1,964).
Delta was the dominant strain in the state between March and December 2021, accounting for 90.70 per cent of the samples sequenced while Omicron took over as the leading strain from the beginning of this year as 87.80 per cent of the samples sequenced between January and April showed its presence, according to the chart shared by the minister. Since last March, 12,755 samples have been sequenced in the state, it showed.

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