The Omicron variant of coronavirus and its sub-types are driving the surge in Delhi, government sources said on Thursday, April 21. Samples have shown the presence of BA.2.12.1 and eight other subtypes of Omicron. The findings were arrived at after studying genome sequencing of samples.
The World Health Organization (WHO) in February had said that the BA.2 sub-variant of Omicron is more transmissible than the BA.1 strain. However, there was no cause for alarm as it was no more severe than the original strain, it said.
So far, the World Health Organisation has put five subtypes of Omicron on its watch list - BA.1, BA.1.1, BA.2, BA.4, BA.5.