Severity of Disease Among Adults Hospitalized with Laboratory-Confirmed COVID-19 Before and During the Period of SARS-CoV-2 B.1.617.2 (Delta) Predominance — COVID-NET, 14 States, January–August 2021

Clinical Trends Among U.S. Adults Hospitalized With COVID-19, March to December 2020

(2021) Shikha Garg et al.   ANNALS OF INTERNAL MEDICINE

Prevention and Attenuation of Covid-19 with the BNT162b2 and mRNA-1273 Vaccines

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

Effectiveness of COVID-19 Vaccines in Preventing Hospitalization Among Adults Aged ≥65 Years — COVID-NET, 13 States, February–April 2021

(2021) Heidi L. Moline et al.   MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT

Trends in COVID-19 Cases, Emergency Department Visits, and Hospital Admissions Among Children and Adolescents Aged 0–17 Years — United States, August 2020–August 2021

(2021) David A. Siegel et al.   MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT

SARS-CoV-2 B.1.617.2 (Delta) Variant COVID-19 Outbreak Associated with a Gymnastics Facility — Oklahoma, April–May 2021

(2021) Kendra Dougherty et al.   MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT

Hospitalizations Associated with COVID-19 Among Children and Adolescents — COVID-NET, 14 States, March 1, 2020–August 14, 2021

(2021) Miranda J. Delahoy et al.   MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT

Evaluation of the relative virulence of novel SARS-CoV-2 variants: a retrospective cohort study in Ontario, Canada

(2021) David N. Fisman et al.   CANADIAN MEDICAL ASSOCIATION JOURNAL

Characteristics and Maternal and Birth Outcomes of Hospitalized Pregnant Women with Laboratory-Confirmed COVID-19 — COVID-NET, 13 States, March 1–August 22, 2020

(2020) Miranda J. Delahoy et al.   MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT