Area of research
Infectious Diseases · Health
Research interest
Research interests include SARS-CoV-2 and COVID-19 Research, COVID-19 Clinical Research Studies, Vaccine Coverage and Hesitancy, and SARS-CoV-2 detection and testing.
Differential protection against SARS-CoV-2 reinfection pre- and post-Omicron
Assessing healthy vaccinee effect in COVID-19 vaccine effectiveness studies: a national cohort study in Qatar
Effectiveness of two and three doses of COVID-19 mRNA vaccines against infection, symptoms, and severity in the pre-omicron era: A time-dependent gradient
Long-term COVID-19 booster effectiveness by infection history and clinical vulnerability and immune imprinting: a retrospective population-based cohort study
Effects of previous infection, vaccination, and hybrid immunity against symptomatic Alpha, Beta, and Delta SARS-CoV-2 infections: an observational study
All-cause and COVID-19 mortality in Qatar during the COVID-19 pandemic
Short- and longer-term all-cause mortality among SARS-CoV-2- infected individuals and the pull-forward phenomenon in Qatar: a national cohort study
Effect of mRNA Vaccine Boosters against SARS-CoV-2 Omicron Infection in Qatar
Duration of mRNA vaccine protection against SARS-CoV-2 Omicron BA.1 and BA.2 subvariants in Qatar
Duration of immune protection of SARS-CoV-2 natural infection against reinfection
Relative infectiousness of SARS-CoV-2 vaccine breakthrough infections, reinfections, and primary infections
Protection of Omicron sub-lineage infection against reinfection with another Omicron sub-lineage
Protection from previous natural infection compared with mRNA vaccination against SARS-CoV-2 infection and severe COVID-19 in Qatar: a retrospective cohort study
Effects of BA.1/BA.2 subvariant, vaccination and prior infection on infectiousness of SARS-CoV-2 omicron infections
Effectiveness of influenza vaccination against SARS-CoV-2 infection among healthcare workers in Qatar
COVID-19 Disease Severity in Persons Infected With Omicron BA.1 and BA.2 Sublineages and Association With Vaccination Status
One Year of SARS-CoV-2: Genomic Characterization of COVID-19 Outbreak in Qatar