High immune response to variants after 2 Covaxin jabs: ICMR study

In a recent ICMR study, breakthrough cases after full vaccination with Covaxin have shown a significant increase in the immune response against coronavirus variants of concern — Beta, Delta and Omicron.

Individuals who recovered from Covid also showed significant immunity boost post-vaccination with Covaxin but lower than the breakthrough cases.

However, those who had taken two doses of Covaxin had very low neutralizing titres demonstrating the waning immunity after three months of the second dose of Covaxin, the study showed.

“The study highlights the significance of administering a booster dose or precaution dose of Covid vaccine as it provides better protection against the disease,” Dr Pragya Yadav, a senior scientist at NIV Pune and the lead investigator of the study, told

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