Browsing by Author "Almukdad, Sawsan"
Now showing items 1-14 of 14
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All-cause and COVID-19 mortality in Qatar during the COVID-19 pandemic
( BMJ Publishing Group , 2023 , Article)Objective To investigate all-cause mortality, COVID-19 mortality and all-cause non-COVID-19 mortality in Qatar during the COVID-19 pandemic. Methods A national, retrospective cohort analysis and national, matched, retrospective ... -
Bivalent mRNA-1273.214 vaccine effectiveness against SARS-CoV-2 omicron XBB* infections
(2023 , Article)In October of 2022, Qatar introduced COVID-19 bivalent vaccination for persons ≥ 12 years using the 50-μg mRNA-1273.214 vaccine combining SARS-CoV-2 ancestral and omicron BA.1 strains.1 We estimated this vaccine’s effectiveness ... -
Covid-19 Vaccine Protection among Children and Adolescents in Qatar.
( Massachusetts Medical Society , 2022 , Article)The BNT162b2 vaccine against coronavirus disease 2019 (Covid-19) has been authorized for use in children 5 to 11 years of age and adolescents 12 to 17 years of age but in different antigen doses. We assessed the real-world ... -
Duration of mRNA vaccine protection against SARS-CoV-2 Omicron BA.1 and BA.2 subvariants in Qatar.
( Nature Research , 2022 , Article)SARS-CoV-2 Omicron BA.1 and BA.2 subvariants are genetically divergent. We conducted a matched, test-negative, case-control study to estimate duration of protection of the second and third/booster doses of mRNA COVID-19 ... -
Economic Evaluation of the Cyp2c19 Genotype-Guided Antiplatelet Therapy Compared To Universal Use of Ticagrelor or Clopidogrel in Qatar
(2020 , Master Thesis)Background: Clopidogrel requires activation primarily by cytochrome P450 2C19 (CYP2C19). Patients with CYP2C19 loss-of-function alleles (LOF) are at increased risk of major adverse cardiovascular events. Ticagrelor is ... -
Effect of mRNA Vaccine Boosters against SARS-CoV-2 Omicron Infection in Qatar.
( Massachusetts Medical Society , 2022 , Article)Waning of vaccine protection against coronavirus disease 2019 (Covid-19) and the emergence of the omicron (or B.1.1.529) variant of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have led to expedited ... -
Effectiveness of the neutralizing antibody sotrovimab among high-risk patients with mild-to-moderate SARS-CoV-2 in Qatar
( Elsevier , 2022 , Article)ObjectivesTo estimate the real-world effectiveness of sotrovimab against severe, critical, or fatal COVID-19 in Qatar at a time in which most SARS-CoV-2 incidences occurred due to the BA.2 Omicron subvariant. MethodsWe ... -
Effects of BA.1/BA.2 subvariant, vaccination, and prior infection on infectiousness of SARS-CoV-2 omicron infections.
( Oxford University Press , 2022 , Article)Compared to BA.1, BA.2 was associated with lower RT-qPCR cycle threshold (Ct) value-3.53 fewer cycles (95% CI: 3.46-3.60), signifying higher infectiousness. This may reflect higher viral load and/or longer duration of ... -
Epidemiology of herpes simplex virus type 1 and genital herpes in Australia and New Zealand: Systematic review, meta-analyses and meta-regressions
( Cambridge University Press , 2023 , Article)Herpes simplex virus type 1 (HSV-1) infection is a lifelong infection that is acquired primarily orally and during childhood. We aimed to characterise HSV-1 epidemiology in Australia and New Zealand. HSV-1-related data as ... -
Epidemiology of Neisseria gonorrhoeae in South-East Asia: Systematic review, meta-analyses, and meta-regressions
( Elsevier , 2025 , Article)ObjectivesThe epidemiology of Neisseria gonorrhoeae (NG) infection in South-East Asia remains inadequately understood. This study aimed to systematically review and analyze the available evidence on NG prevalence to provide ... -
Protection against the omicron variant from previous SARS-CoV-2 infection
( Massachusetts Medical Society , 2022 , Other)Natural infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) elicits strong protection against reinfection with the B.1.1.7 (alpha),1,2 B.1.351 (beta),1 and B.1.617.2 (delta)3 variants. However, the ... -
Protection from previous natural infection compared with mRNA vaccination against SARS-CoV-2 infection and severe COVID-19 in Qatar: a retrospective cohort study
( Elsevier , 2022 , Article)BackgroundUnderstanding protection conferred by natural SARS-CoV-2 infection versus COVID-19 vaccination is important for informing vaccine mandate decisions. We compared protection conferred by natural infection versus ... -
Status of the HIV epidemic in key populations in the Middle East and north Africa: knowns and unknowns.
( The Lancet HIV , 2022 , Article)The Middle East and north Africa is one of only two world regions where HIV incidence is on the rise, with most infections occurring among key populations: people who inject drugs, men who have sex with men, and female sex ... -
Syphilis infection prevalence in the Middle East and North Africa: a systematic review and meta-analysis
( Elsevier , 2024 , Article)Background: Syphilis is a sexually transmitted infection (STI) that can be prevented and effectively treated; yet it continues to be a cause of morbidity and mortality worldwide. There is a limited understanding of the ...
