Waning 2-Dose and 3-Dose Effectiveness of mRNA Vaccines Against COVID-19–Associated Emergency Department and Urgent Care Encounters and Hospitalizations Among Adults During Periods of Delta and Omicron Variant Predominance — VISION Network, 10 States, August 2021–January 2022

Association Between 3 Doses of mRNA COVID-19 Vaccine and Symptomatic Infection Caused by the SARS-CoV-2 Omicron and Delta Variants

(2022) Emma K. Accorsi et al.   JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION

Effectiveness of a Third Dose of mRNA Vaccines Against COVID-19–Associated Emergency Department and Urgent Care Encounters and Hospitalizations Among Adults During Periods of Delta and Omicron Variant Predominance — VISION Network, 10 States, August 2021–January 2022

(2022) Mark G. Thompson et al.   MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT

Effectiveness of Covid-19 Vaccines in Ambulatory and Inpatient Care Settings

(2021) Mark G. Thompson et al.   NEW ENGLAND JOURNAL OF MEDICINE

Effectiveness of COVID-19 Vaccines in Preventing SARS-CoV-2 Infection Among Frontline Workers Before and During B.1.617.2 (Delta) Variant Predominance — Eight U.S. Locations, December 2020–August 2021

(2021) Ashley Fowlkes et al.   MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT

Sustained Effectiveness of Pfizer-BioNTech and Moderna Vaccines Against COVID-19 Associated Hospitalizations Among Adults — United States, March–July 2021

(2021) Mark W. Tenforde et al.   MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT

Effectiveness of mRNA BNT162b2 COVID-19 vaccine up to 6 months in a large integrated health system in the USA: a retrospective cohort study

(2021) Sara Y Tartof et al.   LANCET

Effectiveness of a third dose of the BNT162b2 mRNA COVID-19 vaccine for preventing severe outcomes in Israel: an observational study

(2021) Noam Barda et al.   LANCET

Effectiveness of mRNA-1273 against delta, mu, and other emerging variants of SARS-CoV-2: test negative case-control study

(2021) Katia J Bruxvoort et al.   BMJ-British Medical Journal