The coverage has dropped in Kolkata compared to what it was in 2019, in the pre-Covid days, said an official of the KMC...

Health workers will conduct camps from 11am to 2pm at specified sites for children who have missed out on the oral polio vaccination dose last Sunday...

The trial is aimed at finding out whether OPV can reduce the combined risk of hospital admission or death from the virus in the 6 months after the vaccinations...