Odisha has urged for 15 to 20 lakh advance doses of coronavirus vaccine - Covishield - from the Centre.Additional chief secretary (Health and Family Welfare) of the state Odisha, PK Mohapatra wrote a letter to the Secretary of Union Ministry of Health and Family Welfare urging for additional doses of the vaccine to ensure that the planned vaccination sessions are conducted smoothly in the coming days.In the letter, Mohapatra said, "Odisha has already administered more than 35.67 lakh doses of vaccine to Health Care Workers, Front line Workers and Citizens 45 years & above, Since 1 st April 2021, the average vaccination coverage of the State is more than 2.31 lakh per day.""As on April 6th, we have stock of 3, 47,180 doses of Covishield and.