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
New Omicron-specific vaccines offer similar protection to existing boosters
Effectiveness of Bivalent mRNA Vaccines in Preventing Symptomatic SARS-CoV-2 Infection — Increasing Community Access to Testing Program, United States, September–November 2022 | MMWR
Potentially breaking the COVID-19 stalemate with variant booster, bivalent or polyvalent vaccines
Vaccines | Free Full-Text | Vaccine Confidence and Uptake of the Omicron Bivalent Booster in Tennessee: Implications for Vulnerable Populations
FDA vaccine advisers 'disappointed' and 'angry' that early data about new Covid-19 booster shot wasn't presented for review last year | CNN
Why do Covid boosters offer greater protection against Omicron?
Effectiveness of BNT162b2 Vaccine against Omicron Variant in South Africa | NEJM
Real-world COVID-19 vaccine effectiveness against the Omicron BA.2 variant in a SARS-CoV-2 infection-naive population | Nature Medicine
Omicron – NIH Director's Blog
Bivalent Booster Is Effective, First Real-World Data Show | Time
Booster needed to neutralize the fast-spreading variant | World Economic Forum
Pfizer-BioNTech Covid-19 shot loses power against Omicron variant
Covid: Vaccines should work against Omicron variant, WHO says - BBC News
Omicron: Three vaccine doses key for protection against variant - BBC News
Andy Larsen: How well does the vaccine work against omicron? Here's the real-world data.
Vaccines | Free Full-Text | COVID-19 Vaccine Booster Strategies for Omicron SARS-CoV-2 Variant: Effectiveness and Future Prospects
Boosting immunity to Omicron | Nature Medicine
Updated COVID-19 booster targets subvariants responsible for 98% of cases today : Oregon Health News Blog
Vaccines appear weak at blocking Omicron, better against severe disease | Reuters
Coronavirus (COVID-19) Update: FDA Takes Multiple Actions to Expand Use of Pfizer-BioNTech COVID-19 Vaccine | FDA
Severity of omicron variant of concern and effectiveness of vaccine boosters against symptomatic disease in Scotland | The University of Edinburgh
Efficacy of a Fourth Dose of Covid-19 mRNA Vaccine against Omicron | NEJM
Effectiveness of an inactivated Covid-19 vaccine with homologous and heterologous boosters against Omicron in Brazil | Nature Communications
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
Covid booster vaccines effective against severe illness from omicron, CDC says
Vaccines and Boosters Offer Best Defense Against Omicron
