Even though it generated 4,000 messages for vaccine recipients on the CoWIN app, the alerts did not reach most health workers and the BMC had to call people ahead of the second day of the vaccination drive, a report in this paper said.

The civic body had decided to go ahead with the vaccination drive recently, irrespective of how the app worked. There had been several glitches in the app, necessitating a suspension for two days. Then, the BMC decided to go back to the old system and started trying to contact the 4,000 people shortlisted for the drive over phone, via ward-level war rooms.