The second phase of the coronavirus vaccination drive will begin March 1, with priority given to people over 60 and those over 45 with co-morbidities, Union Minister Prakash Javadekar said Wednesday afternoon, adding that details of what counted as a comorbidity will be released by the Health Ministry. The shots will be given at 10,000 government-run centres (where it will be free of cost) and 20,000 private centres. Charges for vaccination at privately-run centres will be confirmed in a few days.