Keeping Pfizer's Covid-19 vaccine at low temperatures will be challenging for India, others: AIIMS Director

Dr Randeep Guleria, Director, All India Institute of Medical Sciences Delhi (AIIMS), Delhi on Wednesday said the results of Pfizer's Covid-19 vaccine phase III trials are very encouraging but preserving it at very low temperatures, -70 degree C, will be a challenge for India and other nations, especially in rural areas.