Three doses of the same Covid-19 vaccine or a combination of jabs work equally well in preventing infections, according to the largest study of its kind. Now a global analysis of data from more than 100 million people confirms the number of doses is the key to boosting immunity rather than jab combinations. Three doses of either the same vaccine or a combination of different types work comparably well in preventing Covid-19 infections, even against different variants, according to the study. Despite a rapid decline in Covid-19 infections and deaths, concerns about waning vaccine immunity and new variants makes it important to understand which vaccine combinations are most effective, the BMJ said. “Heterologous and homologous three dose regimens work comparably well in preventing Covid-19 infections, even against different variants.”

Source: The Guardian June 01, 2022 08:00 UTC