The civic body said 279 COVID-19 samples were examined in the 12th series batch at the Genome Sequencing Lab in BMC-run Kasturba Hospital. Out of the total, 202 samples were collected from Mumbai, while the remaining were from outside the city.
The nor'wester hit North and South 24 Parganas, Hooghly and Purba Bardhaman districts, besides Kolkata, a Met Office spokesperson said.
