• Homologous and Heterologous Covid-19 Booster Vaccinations.

      Atmar, Robert L; Lyke, Kirsten E; Deming, Meagan E; Jackson, Lisa A; Branche, Angela R; El Sahly, Hana M; Rostad, Christina A; Martin, Judith M; Johnston, Christine; Rupp, Richard E; et al. (Massachusetts Medical Society, 2022-01-26)
      In this phase 1-2, open-label clinical trial conducted at 10 sites in the United States, adults who had completed a Covid-19 vaccine regimen at least 12 weeks earlier and had no reported history of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection received a booster injection with one of three vaccines: mRNA-1273 (Moderna) at a dose of 100 μg, Ad26.COV2.S (Johnson & Johnson-Janssen) at a dose of 5×1010 virus particles, or BNT162b2 (Pfizer-BioNTech) at a dose of 30 μg. The primary end points were safety, reactogenicity, and humoral immunogenicity on trial days 15 and 29.