Routine surveillance helps detect asymptomatic SARS-CoV-2 vaccine breakthrough infections

By | October 28, 2021
In a study published in Annals of Internal Medicine, researchers from Italy systematically monitored 2,397 HCWs who were fully vaccinated with BNT162 at the ASST Settelaghi hospitals in Lombardy, Italy during February 2021. HCWs who worked in 8 wards deemed at “high risk” for infection from attending patients had to undergo mandatory nasopharyngeal swab testing with SARS-CoV-2 polymerase chain reaction every two weeks. HCWs working in 8 “moderate-risk” wards were tested every four weeks.