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Effectiveness of influenza vaccination against SARS-CoV-2 infection among healthcare workers in Qatar

Elias, Tayar; Abdeen, Sami; Abed Alah, Muna; Chemaitelly, Hiam; Bougmiza, Iheb; ... more authors ... less authors ( Elsevier , 2023 , Article)

BackgroundSome studies have reported that influenza vaccination is associated with lower risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and/or coronavirus disease 2019 (COVID-19) morbidity ...

Population immunity of natural infection, primary-series vaccination, and booster vaccination in Qatar during the COVID-19 pandemic: an observational study

Suelen H., Qassim; Chemaitelly, Hiam; Ayoub, Houssein H.; Coyle, Peter; Tang, Patrick; ... more authors ... less authors ( Elsevier , 2023 , Article)

BackgroundWaning of natural infection protection and vaccine protection highlight the need to evaluate changes in population immunity over time. Population immunity of previous SARS-CoV-2 infection or of COVID-19 vaccination ...

Turning point in COVID-19 severity and fatality during the pandemic: a national cohort study in Qatar

Chemaitelly, Hiam; Ayoub, Houssein H; Faust, Jeremy Samuel; Coyle, Peter; Tang, Patrick; ... more authors ... less authors ( BMJ Publishing Group , 2023 , Article)

Objective To assess the evolution of COVID-19 severity and fatality in a unique setting that consistently applied, throughout the pandemic, rigorous and standardised criteria for defining severe COVID-19 outcomes. Methods ...

SARS-CoV-2 infection and effects of age, sex, comorbidity, and vaccination among older individuals: A national cohort study

Mahmoud, Mai A.; Ayoub, Houssein H.; Coyle, Peter; Tang, Patrick; Hasan, Mohammad R.; ... more authors ... less authors ( Wiley , 2023 , Article)

Background: We investigated the contribution of age, coexisting medical conditions, sex, and vaccination to incidence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and of severe, critical, or ...

Effects of previous infection, vaccination, and hybrid immunity against symptomatic Alpha, Beta, and Delta SARS-CoV-2 infections: an observational study

Heba N., Altarawneh; Chemaitelly, Hiam; Ayoub, Houssein H.; Tang, Patrick; Hasan, Mohammad R.; ... more authors ... less authors ( Elsevier , 2023 , Article)

BackgroundProtection against SARS-CoV-2 symptomatic infection and severe COVID-19 of previous infection, mRNA two-dose vaccination, mRNA three-dose vaccination, and hybrid immunity of previous infection and vaccination ...