The BA.2 subtype of Omicron was identified in 18.4 percent of the samples sequenced in the state from January to March 2022, Tamil Nadu’s Public Health Department said in a statement.
It should be noted that the BA.2 sub-version is driving the COVID-19 cases in the UK. Genomic analysis on samples also found that the sub-variant BA.1.1 was identified in 43 percent of the samples, while the BA.1 sub-variant was detected in 37.3 percent of the samples.
The Department of Health also said that Omicron was the dominant form in circulation in the state. Whole Genome Sequencing (WGS) at the State Public Health Laboratory showed that 93 per cent of the 496 variants sequenced in the state were of omicron variants.
The study also revealed that 6.6 percent of the samples sequenced in the state were of the delta type.
Tamil Nadu Health Secretary, J. Speaking to IANS, Radhakrishnan said, “The whole genome sequencing (WGS) data was not meant to create any panic among the people. However it is to make people aware about the BA.2 variant.”
He also said that there was not much clinical difference between the two types in Tamil Nadu and added that people need to be cautious as several countries have registered a surge in cases in the past week.
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