Comparative Effectiveness of Moderna, Pfizer-BioNTech, and Janssen (Johnson & Johnson) Vaccines in Preventing COVID-19 Hospitalizations Among Adults Wi…
Johnson & Johnson says additional dose boosts Covid vaccine efficacy [See also J&J press release.] Johnson & Johnson said Tuesday that a large, global …
Safety, Immunogenicity, and Efficacy of COVID-19 Vaccine in Children and Adolescents: A Systematic Review [Preprint.] Eight published studies with 2851…
Vaccinating people who have had covid-19: why doesn’t natural immunity count in the US? [BMJ feature.] The substantial number of infections, coupled wi…
What’s the evidence for COVID-19 booster shots? As of Aug. 15, Israel reported 514 hospitalizations for severe or critical COVID-19 — up 31% from four …
Monitoring Incidence of COVID-19 Cases, Hospitalizations, and Deaths, by Vaccination Status — 13 U.S. Jurisdictions, April 4–July 17, 2021 Across 13 U.…
A Study of the Effectiveness of Governmental Strategies for Managing Mortality from COVID-19 We investigate the effectiveness of seven government conta…
What We Know About Mu, the WHO’s Latest Variant of Interest [Media report.] According to Public Health England, the variant shares mutations with other…
Effectiveness of vaccination against symptomatic and asymptomatic SARS-CoV-2 infection: a systematic review and meta-analysis[Preprint. Studies include…
Do Delta ‘breakthroughs’ really mean vaccine protection is waning, and are boosters the answer?[Science News report.] “[Vaccine] efficacy drops with De…
Hospital admission and emergency care attendance risk for SARS-CoV-2 delta (B.1.617.2) compared with alpha (B.1.1.7) variants of concern: a cohort stud…
Effectiveness of COVID-19 Vaccines in Preventing SARS-CoV-2 Infection Among Frontline Workers Before and During B.1.617.2 (Delta) Variant Predominance …