Mumbai's COVID-19 mortality rate was just 0.03 per cent and strict implementation of the mask rule and other initiatives have helped keep deaths in check in the city, civic commissioner Iqbal Singh Chahal said on Tuesday.

The city has reported 953 deaths in the last 70 days, a period covering the second COVID-19 wave which started around mid-February, according to the Brihanmumbai Municipal Corporation (BMC) data.