Covid positivity rate of more than 10%, while in 24 districts, including seven in Kerala and four each in Maharashtra and Mizoram, the weekly positivity rate is between five and 10%.
Speaking on this topic, Guleria said, as quoted by news agency PTI, complacency has set in among people towards following Covid-appropriate behaviour.
In addition, some people who are due for a precautionary dose are not taking it, which possibly has increased the pool of a susceptible population.
Echoing similar views, Dr N K Arora, chairman of the National Technical Advisory Group on Immunisation (NTAGI), said, there is increased mobility due to the summer holidays, easing of travel restrictions both nationally and internationally and full-fledged opening up of economic activities, because of which there has been a spread of the infection among vulnerable individuals.