As more people get vaccinated each day scientists are learning that not only is it safe to wait longer for the second dose of the Covid-19 vaccine but new research shows that people who’ve already been infected by the virus might only need a single shot of the vaccine.
The study, published in the New England Journal of Medicine, looked at 109 people with and without previous SARS-CoV-2 immunity. What they found was that those who had already contracted Covid-19 developed antibodies within days of the first dose of vaccine at a rate 10 to 20 times higher than those who were uninfected, and at a more than tenfold rate after the second dose.