Bharat Biotech's Covaxin induces wider immune response, say experts

A recent, yet to be published study on heterologous vaccine boosting by Christian Medical College Vellore showed that Covishield-boosted and Covaxin-primed individuals display high levels of antibodies against Sars-CoV-2, the virus that causes Covid-19.

However, experts say that Covaxin induces a wider immune response and thus antibody production against the spike protein may be less intense.

Samiran Panda, head of epidemiology and infectious diseases at the Indian Council of Medical Research (ICMR) that has worked with Bharat Biotech to co-develop Covaxin, said there was no need to panic because of studies. “Every vaccine tries to induce a humoral (antibody) response