need a booster with a second-generation Covid-19 shot, said Dr Randeep Guleria, the chief of All India Institute of Medical Sciences (AIIMS). "It seems that we probably need the booster dose of vaccines as with the passage of time the immunity tends to fall.
There is waning immunity. We would like to have a booster dose that will cover for various emerging variants," Guleria was quoted as saying by news agency ANI. "We will have second-generation vaccines which would be better in terms of the immunity they give, covering of the new variants and a having a better overall efficacy.
Trails of booster vaccine shots are already going on," he added. He further shed light on an approximate timeline of when the booster dose should be