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Open Forum Infectious Diseases|March 17, 2025
Evaluating Hospital Admission Data as Indicators of COVID-19 Severity: A National Assessment in QatarLayan Sukik, Hiam Chemaitelly, Houssein H Ayoub, et al.
BMJ Open Respiratory Research|March 26, 2025
Protection conferred by SARS-CoV-2 infection across a spectrum of reinfection symptoms and severitiesLayan Sukik, Hiam Chemaitelly, Houssein H Ayoub, et al.
Influenza and Other Respiratory Viruses|November 29, 2023
SARS-CoV-2 infection and effects of age, sex, comorbidity, and vaccination among older individuals: A national cohort studyMai A Mahmoud, Houssein H Ayoub, Peter Coyle, et al.
Plos Medicine|December 16, 2021
Introduction and expansion of the SARS-CoV-2 B.1.1.7 variant and reinfections in Qatar: A nationally representative cohort studyLaith J Abu-Raddad, Hiam Chemaitelly, Houssein H Ayoub, et al.
The New England Journal of Medicine|June 15, 2022
Effects of Previous Infection and Vaccination on Symptomatic Omicron InfectionsHeba N Altarawneh, Hiam Chemaitelly, Houssein H Ayoub, et al.
Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America|October 17, 2021
Severity, Criticality, and Fatality of the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Beta VariantLaith J Abu-Raddad, Hiam Chemaitelly, Houssein H Ayoub, et al.
The New England Journal of Medicine|March 9, 2022
Effect of mRNA Vaccine Boosters against SARS-CoV-2 Omicron Infection in QatarLaith J Abu-Raddad, Hiam Chemaitelly, Houssein H Ayoub, et al.
BMJ Public Health|February 28, 2025
Turning point in COVID-19 severity and fatality during the pandemic: a national cohort study in QatarHiam Chemaitelly, Houssein H Ayoub, Jeremy Samuel Faust, et al.
Nature Communications|June 2, 2022
Duration of mRNA vaccine protection against SARS-CoV-2 Omicron BA.1 and BA.2 subvariants in QatarHiam Chemaitelly, Houssein H Ayoub, Sawsan AlMukdad, et al.
The New England Journal of Medicine|October 6, 2021
Waning of BNT162b2 Vaccine Protection against SARS-CoV-2 Infection in QatarHiam Chemaitelly, Patrick Tang, Mohammad R Hasan, et al.
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