Mumbai.Only those who have registered themselves in the CoWIN app and who have been given the prescribed immunisation centre and time (slot) would be given the jab.The phase 3 vaccination drive has come into force from 1 May.Here's a list of reminders shared by BMC:1) Covid-19 vaccination only for 18 to 44-year-olds today2) Only beneficiaries in the 18-44 age group who have booked a slot will be administered vaccine3) No walk-ins at centres4) 45 and above due for the second dose will be updated about dates eventually5) Carry an IDDear Mumbaikars A few important reminders - Vaccination only for 18-44 year olds today - Only 18-44s who have booked a slot will be administered vaccine - No walk-ins at centres - 45 and above due for second dose.