Booster needed to neutralize the fast-spreading variant | World Economic Forum
Efficacy of a Fourth Dose of Covid-19 mRNA Vaccine against Omicron | NEJM
Covid booster shots up to 75% effective against Omicron, UK study finds
Severity of omicron variant of concern and effectiveness of vaccine boosters against symptomatic disease in Scotland | The University of Edinburgh
Omicron: Three vaccine doses key for protection against variant - BBC News
Boosting immunity to Omicron | Nature Medicine
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
New Omicron-specific vaccines offer similar protection to existing boosters
COVID Vaccine Booster Efficacy Against Infection May Fade Quickly | MedPage Today
How booster shots can help protect you from Omicron | National Geographic
Omicron – NIH Director's Blog
Boosters wane but showed protection against hospitalization during omicron, CDC study says - The Washington Post
Early Estimates of Bivalent mRNA Booster Dose Vaccine Effectiveness in Preventing Symptomatic SARS-CoV-2 Infection Attributable to Omicron BA.5– and XBB/XBB.1.5–Related Sublineages Among Immunocompetent Adults — Increasing Community Access to Testing ...
Effectiveness of BNT162b2 Vaccine against Omicron Variant in South Africa | NEJM
Eric Topol on X: "First data on booster vaccine effectiveness vs Omicron (581 cases): drop in protection vs symptomatic infection by 2 doses (AZ ->0, Pfizer-> <40%) restored to ~75% with 3rd
mRNA-based COVID-19 vaccine boosters induce neutralizing immunity against SARS-CoV-2 Omicron variant - ScienceDirect
Why do Covid boosters offer greater protection against Omicron?
Vaccines | Free Full-Text | The Four Ws of the Fourth Dose COVID-19 Vaccines: Why, Who, When and What
A Bivalent Omicron-Containing Booster Vaccine against Covid-19 | NEJM
Effect of mRNA Vaccine Boosters against SARS-CoV-2 Omicron Infection in Qatar | NEJM
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
COVID-19 vaccine effectiveness against the omicron (BA.2) variant in England - The Lancet Infectious Diseases
Effectiveness of primary series and booster vaccination against SARS-CoV-2 infection and hospitalisation among adolescents aged 12–17 years in Singapore: a national cohort study - The Lancet Infectious Diseases
COVID-19 vaccine booster dose needed to achieve Omicron-specific neutralisation in nursing home residents - eBioMedicine
Effectiveness of a fourth dose of covid-19 mRNA vaccine against the omicron variant among long term care residents in Ontario, Canada: test negative design study | The BMJ
Effectiveness of mRNA-1273 against SARS-CoV-2 Omicron and Delta variants | Nature Medicine
Effectiveness of an inactivated Covid-19 vaccine with homologous and heterologous boosters against Omicron in Brazil | Nature Communications
Sputnik V on X: "Canadian real-world study of mRNA vaccines efficiency vs # Omicron shows negative efficacy of 2 mRNA doses and quickly waning efficiency of homologous #mRNA booster: “A third dose provides
