Covid vaccines, with the third most effective dose: the study

Vaccines against Covid are safe and effective and the administration of a third dose can confer greater protective efficacy. This is what emerges from the study conducted on 3,720 health workers of the Irccs Policlinico San Matteo di Pavia Foundation to prospectively investigate the risk of Sars-CoV-2 infection in vaccinated subjects. The work, one of the largest conducted to date, was published in the journal ‘Nature Communications’.