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

Sara Y. Tartof, Jeff Slezak, Heidi Fischer, +12

The Lancet

VaccinationVaccine SafetyRetrospective Cohort StudyPreventive MedicineVaccine Efficacy +4

Obesity and Mortality Among Patients Diagnosed With COVID-19: Results From an Integrated Health Care Organization

Sara Y. Tartof, Lei Qian, Vennis Hong, +14

Annals of Internal Medicine

Clinical outcomes associated with SARS-CoV-2 Omicron (B.1.1.529) variant and BA.1/BA.1.1 or BA.2 subvariant infection in Southern California

Joseph A. Lewnard, Vennis Hong, Manish M. Patel, +3

Nature Medicine

Covid-19 PandemicClinical EpidemiologyClinical OutcomesPublic HealthCovid-19 +3

Durability of BNT162b2 vaccine against hospital and emergency department admissions due to the omicron and delta variants in a large health system in the USA: a test-negative case–control study

Sara Y. Tartof, Jeff Slezak, Laura Puzniak, +6

The Lancet Respiratory Medicine

VaccinationVaccine SafetyVaccinologyBnt162b2 VaccineVaccine Development +8

Effectiveness of nirmatrelvir–ritonavir in preventing hospital admissions and deaths in people with COVID-19: a cohort study in a large US health-care system

Joseph A. Lewnard, John M. McLaughlin, Vennis Hong, +8

The Lancet Infectious Diseases

Impact of the COVID-19 Pandemic on Health Care Utilization in a Large Integrated Health Care System: Retrospective Cohort Study

Stanley Xu, Sungching Glenn, Lina S. Sy, +4

Journal of Medical Internet Research

Effectiveness of a third dose of BNT162b2 mRNA COVID-19 vaccine in a large US health system: A retrospective cohort study

Sara Y. Tartof, Jeff Slezak, Laura Puzniak, +12

The Lancet Regional Health - Americas

Clinical outcomes associated with Omicron (B.1.1.529) variant and BA.1/BA.1.1 or BA.2 subvariant infection in southern California

Joseph A. Lewnard, Vennis Hong, Manish Patel, +3

Differential ProtectionCovid-19 EpidemiologyCovid-19Healthcare-associated InfectionClinical Epidemiology +15

Hospitalization and Emergency Department Encounters for COVID-19 After Paxlovid Treatment — California, December 2021–May 2022

Deborah E. Malden, Vennis Hong, Bruno Lewin, +4

MMWR Morbidity and Mortality Weekly Report

Effectiveness of BNT162b2 BA.4/5 bivalent mRNA vaccine against a range of COVID-19 outcomes in a large health system in the USA: a test-negative case–control study

Sara Y. Tartof, Jeff Slezak, Laura Puzniak, +11

The Lancet Respiratory Medicine