two-day trial run to test the planned operations and the laid-out mechanisms for Covid-19 vaccination drive was successfully conducted in four states, the Ministry of Health and Family Welfare said on Tuesday.The drill was conducted on December 28 and 29 Assam, Andhra Pradesh, Punjab and Gujarat.Also Read | How Indians lived online during 2020"All states expressed satisfaction in terms of the operational approach and use of IT platform to ensure transparency and effective monitoring of vaccination processes expected to cover a large number of people across the country," the ministry said.The two-day end-to-end dry run was undertaken in Krishna district in Andhra Pradesh, Rajkot and Gandhinagar in Gujarat, Ludhiana and Shaheed Bhagat Singh.