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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.
Eclinicalmedicine|May 3, 2021
SARS-CoV-2 antibody-positivity protects against reinfection for at least seven months with 95% efficacyLaith J Abu-Raddad, Hiam Chemaitelly, Peter Coyle, et al.
JAMA|November 1, 2021
Association of Prior SARS-CoV-2 Infection With Risk of Breakthrough Infection Following mRNA Vaccination in QatarLaith J Abu-Raddad, Hiam Chemaitelly, Houssein H Ayoub, et al.
Communications Medicine|July 2, 2025
Immune histories and natural infection protection during the omicron eraHiam Chemaitelly, Houssein H Ayoub, Niklas Bobrovitz, et al.
Scientific Reports|March 19, 2021
Characterizing the Qatar advanced-phase SARS-CoV-2 epidemicLaith J Abu-Raddad, Hiam Chemaitelly, Houssein H Ayoub, et al.
Nature Communications|January 28, 2022
Relative infectiousness of SARS-CoV-2 vaccine breakthrough infections, reinfections, and primary infectionsLaith J Abu-Raddad, Hiam Chemaitelly, Houssein H Ayoub, et al.
Nature Communications|August 9, 2022
Protection of Omicron sub-lineage infection against reinfection with another Omicron sub-lineageHiam Chemaitelly, Houssein H Ayoub, Peter Coyle, et al.
Scientific Reports|June 5, 2021
Analytic comparison between three high-throughput commercial SARS-CoV-2 antibody assays reveals minor discrepancies in a high-incidence populationGheyath K Nasrallah, Soha R Dargham, Farah Shurrab, 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.
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