Early Estimates of Bivalent mRNA Vaccine Effectiveness in Preventing COVID-19–Associated Emergency Department or Urgent Care Encounters and Hospitalizations Among Immunocompetent Adults — VISION Network, Nine States, September–November 2022 | MMWR
Vaccines | Free Full-Text | Is Booster Dose Strategy Sufficient for Omicron Variant of SARS-CoV-2?
Effectiveness of a COVID-19 Additional Primary or Booster Vaccine Dose in Preventing SARS-CoV-2 Infection Among Nursing Home Residents During Widespread Circulation of the Omicron Variant — United States, February 14–March 27, 2022 | MMWR
Safety and efficacy of the ChAdOx1 nCoV-19 vaccine (AZD1222) against SARS-CoV-2: an interim analysis of four randomised controlled trials in Brazil, South Africa, and the UK - The Lancet
COVID-19 mRNA booster provides additional protection, most beneficial for older adults
A Bivalent Omicron-Containing Booster Vaccine against Covid-19 | NEJM
Single-dose administration and the influence of the timing of the booster dose on immunogenicity and efficacy of ChAdOx1 nCoV-19 (AZD1222) vaccine: a pooled analysis of four randomised trials - The Lancet
What We Know So Far About Waning Vaccine Effectiveness - The New York Times
Vaccines | Free Full-Text | The Four Ws of the Fourth Dose COVID-19 Vaccines: Why, Who, When and What
BioNTech SE on X: "95.6% relative vaccine efficacy against #Covid19 after a booster shot with our #mRNA vaccine, during a period when Delta was the prevalent strain. These are the first efficacy
Pfizer, BioNTech say COVID-19 booster shot showed high efficacy in large study | Reuters
Boosting immunity to COVID-19 vaccines | Nature Medicine
COVID-19 vaccine breakthrough infections | Science
FDA authorizes new guidance on Pfizer vaccines and boosters for children and adults : Oregon Health News Blog
MOH Recommends Pfizer Booster For AstraZeneca, Sinopharm Covid-19 Vaccine Recipients - CodeBlue
Safety and Efficacy of a Third Dose of BNT162b2 Covid-19 Vaccine | NEJM
Effectiveness of an inactivated Covid-19 vaccine with homologous and heterologous boosters against Omicron in Brazil | Nature Communications
Vaccines | Free Full-Text | Efficacy of the Second COVID-19 Vaccine Booster Dose in the Elderly
Moderna COVID vaccine booster dose results in immune memory
Testing fractional doses of COVID-19 vaccines | PNAS
Efficacy of a Fourth Dose of Covid-19 mRNA Vaccine against Omicron | NEJM
Booster and Additional Primary Dose COVID-19 Vaccinations Among Adults Aged ≥65 Years — United States, August 13, 2021–November 19, 2021 | MMWR
Covid booster vaccines effective against severe illness from omicron, CDC says
Boosting immunity to Omicron | Nature Medicine
