With varied mutations of the SARS-CoV-2 rising within the close to future, there could be a necessity for the nation to undertake a booster dose with second-generation COVID-19 vaccines, mentioned All India Institute of Medical Sciences (AIIMS) chief Dr Randeep Guleria. “It appears that evidently we in all probability want the booster dose of vaccines as with the passage of time the immunity tends to fall. There may be waning immunity. We want to have booster dose that may cowl for varied rising variants,” Dr Guleria mentioned in an interview with ANI.