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
Effectiveness of Bivalent mRNA Vaccines in Preventing Symptomatic SARS-CoV-2 Infection — Increasing Community Access to Testing Program, United States, September–November 2022 | MMWR
Rollout Strategy for the Pfizer-BioNTech COVID-19 Vaccine in Ontario - Ontario COVID-19 Science Advisory Table
Vaccines | Free Full-Text | Efficacy of the Second COVID-19 Vaccine Booster Dose in the Elderly
RACGP - Does mixing COVID boosters provide better immunity?
Boosting immunity to COVID-19 vaccines | Nature Medicine
Boosting immunity to Omicron | Nature Medicine
Vaccines | Free Full-Text | The Four Ws of the Fourth Dose COVID-19 Vaccines: Why, Who, When and What
Effectiveness of the second COVID-19 booster against Omicron: a large-scale cohort study in Chile | Nature Communications
COVID-19 Vaccines and Booster Shots: Which Combination is Most Effective? - Homage Malaysia
Boosters wane but showed protection against hospitalization during omicron, CDC study says - The Washington Post
Effectiveness of a second BNT162b2 booster vaccine against hospitalization and death from COVID-19 in adults aged over 60 years | Nature Medicine
Frontiers | Association Between Risk Perception and Acceptance for a Booster Dose of COVID-19 Vaccine to Children Among Child Caregivers in China
Pfizer says its COVID shots are 73 percent effective in children under 5 | PBS NewsHour
Cohort study of Covid-19 vaccine effectiveness among healthcare workers in Finland, December 2020 - October 2021 - ScienceDirect
Frontiers | Effectiveness of SARS-CoV-2 vaccines against Omicron infection and severe events: a systematic review and meta-analysis of test-negative design studies
What We Know So Far About Waning Vaccine Effectiveness - The New York Times
Effects of BNT162b2 Covid-19 Vaccine Booster in Long-Term Care Facilities in Israel | NEJM
Efficacy of a Fourth Dose of Covid-19 mRNA Vaccine against Omicron | NEJM
Effectiveness of a third dose of the BNT162b2 mRNA COVID-19 vaccine for preventing severe outcomes in Israel: an observational study - The Lancet
Severity of omicron variant of concern and effectiveness of vaccine boosters against symptomatic disease in Scotland (EAVE II): a national cohort study with nested test-negative design - The Lancet Infectious Diseases
Frequently asked questions and answers about Moderna COVID-19 vaccine | Bangkok Hospital
What We Know About Getting a Second Booster Shot of COVID-19 Vaccines | The Scientist Magazine®
COVID-19 vaccine breakthrough infections | Science
Vaccines | Free Full-Text | Is Booster Dose Strategy Sufficient for Omicron Variant of SARS-CoV-2?
What We Know So Far About Waning Vaccine Effectiveness - The New York Times
