Explained: Here's what to know as India starts second dose of Covid

The first dose of Pfizer-BioNTech COVID-19 Vaccine is administered three weeks after receipt of the previous dose and the second dose is

WHO recommends that the second dose should be administered 4–8 weeks after the first dose; an interval of 8 weeks between doses is preferred as

2nd dose vaccine When the second dose is given the immune response against the vaccine will be much faster and more effective than the first dose Thus, a delay

mahalakshmi vaccines People aged 65 years and older who received 1 dose of a 2023–2024 COVID-19 vaccine should get an additional dose Phase 2: Study the effectiveness, by