Covid-19 vaccine likely to have 50-100% efficacy, says ICMR

Dr Balram Bhargava

New Delhi: Indian Council of Medical Research (ICMR) has said the vaccine against coronavirus disease (Covid-19) is likely to be anywhere between 50 to 100% effective.

According to Director General, ICMR, Dr Balram Bhargava, “all the vaccines for respiratory viruses are not 100% effective. The World Health Organisation (WHO) says that there are three things key for a vaccine: safety (how safe it is for human use), immunogenicity (whether it is able to provoke body’s immune response) and its efficacy (how effective it is against the virus).”

He added: “And WHO says even if we get 50% efficacy that is more than acceptable. So for respiratory viruses we will never get a vaccine with 100% efficacy. We are obviously aiming at 100% efficacy but we may get anywhere between 50 to 100%.”


NT Bureau