Lower Severe Acute Respiratory Syndrome Coronavirus 2 Viral Shedding Following Coronavirus Disease 2019 Vaccination Among Healthcare Workers in Los Angeles, California

Open Forum Infect Dis. 2021 Nov 18;8(11):ofab526. doi: 10.1093/ofid/ofab526. eCollection 2021 Nov.

Abstract

Among 880 healthcare workers with a positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) test, 264 (30.0%) infections were identified following receipt of at least 1 vaccine dose. Median SARS-CoV-2 cycle threshold values were highest among individuals receiving 2 vaccine doses, corresponding to lower viral shedding. Vaccination might lead to lower transmissibility of SARS-CoV-2.

Keywords: COVID-19; SARS-CoV-2; cycle threshold; vaccine; viral load.