Sivo D, Russo A, Maselli C, Balzano A, Carelli D, Durante P, et al. Effects of regular testing as a sort of Covid-19 filter, by identifying, isolating and thus filtering out currently infected persons, using antigenic tests among healthcare workers in three hospitals in the South of Italy. JAHC [Internet]. 2021 Jan. 29 [cited 2024 Jul. 4];3(3). Available from: https://www.jahc.it/index.php/jahc/article/view/179