• Antibody Response to SARS-CoV-2: A Cohort Study in Qatar's Primary Care Settings. 

      Syed, Mohamed Ahmed; Al Nuaimi, Ahmed Sameer; Nasrallah, Gheyath K; Althani, Asmaa Ali J F; Zainel, Abduljaleel Abdullatif; ... more authors ( SAGE Publications , 2021 , Article)
      Globally, countries are rolling out Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) quarantine policies and vaccination programs. Research studies are needed in helping understand the likelihood of acquired ...
    • COVID-19 effect on patients with noncommunicable diseases: A narrative review 

      Al-Qudimat, Ahmad R.; Al Darwish, Mohamed B.; Elaarag, Mai; Al-Zoubi, Raed M.; Rejeb, Mohamed Amine; ... more authors ( Wiley-Blackwell , 2022 , Article)
      Background and Aims: On March 11, 2020, the WHO has declared COVID-19 a global pandemic, affecting our day-to-day lives. Physical distancing and lockdown made significant obstacles to populations, particularly healthcare ...
    • Demographic and Clinical Characteristics of Early Travel-Associated COVID-19 Cases 

      Marei, Reham M.; Emara, Mohamed M.; Elsaied, Omar M.; Nasrallah, Gheyath K.; Chivese, Tawanda; ... more authors ( Frontiers Media , 2020 , Article)
      © Copyright © 2020 Marei, Emara, Elsaied, Nasrallah, Chivese, Al-Romaihi, Althani, Al Thani, Farag and Yassine. Background: SARS-CoV-2 continues to claim hundreds of thousands of people's lives. It mostly affects the elderly ...
    • Distinct Clinical and Prognostic Features of Myelodysplastic Syndrome in Patients from the Middle East, North Africa, and Beyond: A Systemic Review 

      Al-Haidose, Amal; Yassin, Mohamed A.; Ahmed, Muna N.; Kunhipurayil, Hasna H.; Al-Harbi, Asrar A.; ... more authors ( Multidisciplinary Digital Publishing Institute (MDPI) , 2023 , Article)
      Myelodysplastic syndrome (MDS) describes a group of bone marrow malignancies with variable morphologies and heterogeneous clinical features. The aim of this study was to systematically appraise the published clinical, ...
    • Duration of immune protection of SARS-CoV-2 natural infection against reinfection. 

      Chemaitelly, Hiam; Nagelkerke, Nico; Ayoub, Houssein H; Coyle, Peter; Tang, Patrick; ... more authors ( Oxford University Press , 2022 , Article)
      The future of the SARS-CoV-2 pandemic hinges on virus evolution and duration of immune protection of natural infection against reinfection. We investigated duration of protection afforded by natural infection, the effect ...
    • Effects of BA.1/BA.2 subvariant, vaccination, and prior infection on infectiousness of SARS-CoV-2 omicron infections. 

      Qassim, Suelen H; Chemaitelly, Hiam; Ayoub, Houssein H; AlMukdad, Sawsan; Tang, Patrick; ... more authors ( 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 ...
    • Effects of SARS-CoV-2 Alpha, Beta, and Delta variants, age, vaccination, and prior infection on infectiousness of SARS-CoV-2 infections 

      Qassim, Suelen H.; Hasan, Mohammad R.; Tang, Patrick; Chemaitelly, Hiam; Ayoub, Houssein H.; ... more authors ( Frontiers Media , 2022 , Article)
      In 2021, Qatar experienced considerable incidence of SARS-CoV-2 infection that was dominated sequentially by the Alpha, Beta, and Delta variants. Using the cycle threshold (Ct) value of an RT-qPCR-positive test to proxy ...
    • Epidemiology Profile of Viral Meningitis Infections Among Patients in Qatar (2015-2018) 

      Mathew, Shilu; Al Khatib, Hebah A; Al Ansari, Khalid; Nader, Joanne; Nasrallah, Gheyath K; ... more authors ( Frontiers Media , 2021 , Article)
      Little is known about the etiology of meningitis in the MENA region, including Qatar. Viral agents are considered the major cause for meningitis worldwide. Here, we present primary data about the etiology and clinical and ...
    • Genetic Epidemiology of Primary Congenital Glaucoma in the 22 Arab Countries: A Systematic Review. 

      Jemmeih, Sara; Malik, Shaza; Okashah, Sarah; Zayed, Hatem ( Taylor and Francis , 2021 , Article)
      Primary congenital glaucoma (PCG) is a rare glaucoma type that develops in early infantile period and contributes to an elevated pressure on ocular cavity. Variants in gene are the most encountered in PCG cases. The ...
    • Severity, Criticality, and Fatality of the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Beta Variant 

      Abu-Raddad, Laith J; Chemaitelly, Hiam; Ayoub, Houssein H; Yassine, Hadi M; Benslimane, Fatiha M; ... more authors ( Oxford Academic , 2021 , Article)
      Beta (B.1.351) variant COVID-19 disease was investigated in Qatar. Compared to Alpha (B.1.1.7) variant, odds of progressing to severe disease were 1.24-fold (95% CI: 1.11-1.39) higher for Beta. Odds of progressing to ...
    • Spectrum of mutations of cystic fibrosis in the 22 Arab countries: A systematic review. 

      Al-Sadeq, Duaa; Abunada, Taghreed; Dalloul, Rajaa; Fahad, Sara; Taleb, Sara; ... more authors ( Wiley , 2018 , Article)
      Cystic fibrosis (CF) is an autosomal recessive genetic disease caused by mutations in the CFTR gene, with various clinical manifestations that affect pulmonary, digestive, exocrine and male reproductive functions as well ...