Cohort study of Covid-19 vaccine effectiveness among healthcare workers in Finland, December 2020 - October 2021 - ScienceDirect
Rollout Strategy for the Pfizer-BioNTech COVID-19 Vaccine in Ontario - Ontario COVID-19 Science Advisory Table
Effectiveness of COVID-19 booster vaccination strategies in partially vaccinated populations
Measuring Vaccination Impact & Coverage
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
Booster and Additional Primary Dose COVID-19 Vaccinations Among Adults Aged ≥65 Years — United States, August 13, 2021–November 19, 2021 | MMWR
Pfizer/BioNTech COVID-19 booster dose demonstrates high efficacy
Vaccines | Free Full-Text | Is Booster Dose Strategy Sufficient for Omicron Variant of SARS-CoV-2?
Effectiveness of a third dose of the BNT162b2 mRNA COVID-19 vaccine for preventing severe outcomes in Israel: an observational study - The Lancet
After Three Months, Sinovac Vaccine Only 28% Effective Against ICU Admission - CodeBlue
Vaccines | Free Full-Text | Efficacy of the Second COVID-19 Vaccine Booster Dose in the Elderly
ATAGI statement on recommendations on a winter booster dose of COVID-19 vaccine | Australian Government Department of Health and Aged Care
Covid booster vaccines effective against severe illness from omicron, CDC says
Boosting immunity to COVID-19 vaccines | Nature Medicine
What We Know So Far About Waning Vaccine Effectiveness - The New York Times
COVID-19 mRNA booster provides additional protection, most beneficial for older adults
Effectiveness of Bivalent mRNA Vaccines in Preventing Symptomatic SARS-CoV-2 Infection — Increasing Community Access to Testing Program, United States, September–November 2022 | MMWR
Effectiveness of an inactivated Covid-19 vaccine with homologous and heterologous boosters against Omicron in Brazil | Nature Communications
mRNA-1273 COVID-19 vaccine effectiveness against the B.1.1.7 and B.1.351 variants and severe COVID-19 disease in Qatar | Nature Medicine
Efficacy of a Fourth Dose of Covid-19 mRNA Vaccine against Omicron | NEJM
Khairy Jamaluddin 🇲🇾🌺 on X: "Real world data from Chile has shown significant increase in vaccine effectiveness after a booster for people who took Sinovac for their primary series. Biggest boost came
