Results from a survey in healthy blood donors in South Eastern Italy indicate that we are far away from herd immunity to SARS-CoV-2. - Fiore JR; Centra M; De Carlo A; Granato T; Rosa A; Sarno M; De Feo L; Di Stefano M; Errico M; Caputo SL; De Nittis R; Arena F; et al. (Journal of medical virology, 2021)