COVID-19 vaccine.As approved in the 30th meeting of the governing body of the NBTC held on February 17, the deferral criteria for blood donation post COVID-19 vaccine was finalised as "28 days post vaccination deferral after the last dose of COVID-19 vaccination irrespective of the type of the vaccine received." The order implies that the donor has to wait for 28 days after taking second dose of the vaccine, which means that he or she cannot donate for 56 days after taking the first jab.The order was issued by NBTC director Dr Sunil Gupta on March 5.According to the Union Health Ministry, two doses of the vaccine need to be taken by an individual 28 days apart to complete the immunisation schedule.Protective levels of antibodies are.