The government advisory panel, which met on Thursday, also reviewed the findings of a study by the Christian Medical College (CMC) in Vellore on the feasibility of allowing as precaution dose a Covid vaccine different from the one used for primary vaccination.The government advisory panel, which met on Thursday, also reviewed the findings of a study by the Christian Medical College (CMC) in Vellore on the feasibility of allowing as precaution dose a Covid vaccine different from the one used for primary vaccination.