Longitudinal evaluation of two different COVID-19 vaccination strategies in individuals with and without previous SARS-CoV-2 infection.

Background: We tested the antibody response to SARS-CoV-2 vaccination in individuals with and without previous infection that received different vaccination strategies.

Methods: We recruited 203 volunteers. Individuals who have had SARS-CoV-2 infection during the six months preceding vaccination received one dose (group 1), the others received two (group 2).