Experts seek delay in 2nd jab to boost efficacy

Public health experts have cited emerging evidence and said India could consider delaying the second dose of the Covid vaccine to improve immunogenicity. Currently, the follow-up shot is given 28 days after the first one. TOI spoke to several experts who said suggested extending that timeline. Dr Gagandeep Kang, a member of the Strategic Advisory Group of Experts (SAGE), which is advising the WHO, said the decision to delay was not just about supply constraints, but improved efficacy too.

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