"chills"

The study led by University of Oxford researchers, earlier this year, began to investigate the effect of alternate doses of the Oxford-AstraZeneca vaccine and the Pfizer vaccine.

Malaria is a life-threatening disease caused by parasites that are transmitted to people through the bites of infected female Anopheles mosquitoes.

So far, the government has procured 1.1 crore Covishield and 55 lakh Covaxin vaccines at a cost of Rs 200 and Rs 206 per dose, respectively.