The national capital on Sunday reported 3,194 Covid cases, the highest single-day rise since May 20, as the positivity rate rose to 4.59%, according to data shared by Delhi's health department.
The city also reported one death due to the disease. Sunday's tally of coronavirus cases was 17% higher than the 2,716 infections registered a day before.
If the positivity rate is over 5% for two consecutive days it would trigger a 'red alert' under the Delhi Disaster Management Authority-approved Graded Response Action Plan leading to a 'total curfew' and halting of most economic activities.
Mumbai also recorded a steep rise in the daily coronavirus cases with 8,063 infections on Sunday.
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On Saturday, the city had recorded 6,347 infections, and Sunday's addition was a rise of 27%, officials pointed out.
The city did not see any death during the day due to the infection and 89% of the cases reported are asymptomatic, it added.