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Why do Covid boosters offer greater protection against Omicron?
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
RACGP - Does mixing COVID boosters provide better immunity?
Effectiveness of a second BNT162b2 booster vaccine against hospitalization and death from COVID-19 in adults aged over 60 years | Nature Medicine
Boosting immunity to Omicron | Nature Medicine
Rollout Strategy for the Pfizer-BioNTech COVID-19 Vaccine in Ontario - Ontario COVID-19 Science Advisory Table
Effectiveness of a third dose of the BNT162b2 mRNA COVID-19 vaccine for preventing severe outcomes in Israel: an observational study - The Lancet
Covid booster doses will be offered to over-40s - BBC News
COVID-19 Vaccines and Booster Shots: Which Combination is Most Effective? - Homage Malaysia
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 vaccine breakthrough infections | Science
What We Know About Getting a Second Booster Shot of COVID-19 Vaccines | The Scientist Magazine®
Why are Covid vaccine boosters needed and who in the UK will receive them?
Effectiveness of Bivalent mRNA Vaccines in Preventing Symptomatic SARS-CoV-2 Infection — Increasing Community Access to Testing Program, United States, September–November 2022 | MMWR
A Bivalent Omicron-Containing Booster Vaccine against Covid-19 | NEJM
What We Know So Far About Waning Vaccine Effectiveness - The New York Times
Covid booster vaccines effective against severe illness from omicron, CDC says
Safety Monitoring of COVID-19 mRNA Vaccine Second Booster Doses Among Adults Aged ≥50 Years — United States, March 29, 2022–July 10, 2022 | MMWR
Pfizer says its COVID shots are 73 percent effective in children under 5 | PBS NewsHour
Frontiers | Association Between Risk Perception and Acceptance for a Booster Dose of COVID-19 Vaccine to Children Among Child Caregivers in China
Booster and Additional Primary Dose COVID-19 Vaccinations Among Adults Aged ≥65 Years — United States, August 13, 2021–November 19, 2021 | MMWR
Cohort study of Covid-19 vaccine effectiveness among healthcare workers in Finland, December 2020 - October 2021 - ScienceDirect
Boosting immunity to COVID-19 vaccines | Nature Medicine
