The centre on Tuesday issued a series of deadlines for vaccination of health workers and frontline medical staff. The government said that by February 20, the first dose should be administered to all healthcare workers. The mop up rounds for those left out should be finished by February 24. For frontline workers, the centre has asked states to finish the first dose of vaccinations by March 1, and mop up rounds by March 6. The centre said those who don't come forward before the deadline will have to wait for age-wise phases of vaccination.