PTI, citing government data. Genome sequencing of 578 samples collected from the deceased showed that 560 of them had the Omicron variant.
The remaining 18 people were carrying other variants, including Delta, which fuelled the ferocious second wave of infections in April and May last year, and sublineages.
Overall, the Omicron variant was found in all the 504 samples analysed at genome sequencing laboratories in the capital in March.
Driven by Omicron, the third wave of Covid-19 had seen a lesser number of hospitalisations and severe cases across the country.