• BNT162b2 and mRNA-1273 COVID-19 vaccine effectiveness against the SARS-CoV-2 Delta variant in Qatar. 

      Tang, Patrick; Hasan, Mohammad R; Chemaitelly, Hiam; Yassine, Hadi M; Benslimane, Fatiha M; ... more authors ( Nature Researc , 2021 , Article)
      With the global expansion of the highly transmissible SARS-CoV-2 Delta (B.1.617.2) variant, we conducted a matched test-negative case-control study to assess the real-world effectiveness of COVID-19 messenger RNA vaccines ...
    • 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 ...
    • Emerging COVID-19 variants and their impact on SARS-CoV-2 diagnosis, therapeutics and vaccines 

      Fernandes, Queenie; Inchakalody, Varghese Philipose; Merhi, Maysaloun; Mestiri, Sarra; Taib, Nassiba; ... more authors ( Taylor and Francis , 2022 , Article)
      The emergence of novel and evolving variants of SARS-CoV-2 has fostered the need for change in the form of newer and more adaptive diagnostic methods for the detection of SARS-CoV-2 infections. On the other hand, developing ...
    • Improving Influenza Vaccination Rate among Primary Healthcare Workers in Qatar 

      Elawad, Khalid H; Farag, Elmoubasher A; Abuelgasim, Dina A; Smatti, Maria K; Al-Romaihi, Hamad E; ... more authors ( MDPI , 2017 , Article)
      The purpose of this study was to improve influenza vaccination, and determine factors influencing vaccine declination among health care workers (HCW) in Qatar. We launched an influenza vaccination campaign to vaccinate ...
    • Level of Maternal Respiratory Syncytial Virus (RSV) F Antibodies in Hospitalized Children and Correlates of Protection. 

      Taleb, Sara A; Al-Ansari, Khalid; Nasrallah, Gheyath K; Elrayess, Mohamed A; Al-Thani, Asmaa A; ... more authors (2021)
      RSV is a major cause of lower respiratory infections among children, where no vaccine is available. The stabilized form of the fusion (F) protein, pre-F, is a leading vaccine candidate targeting different populations, ...
    • Molecular and Biological Mechanisms Underlying Gender Differences in COVID-19 Severity and Mortality 

      Wehbe, Zena; Hammoud, Safaa Hisham; Yassine, Hadi M; Fardoun, Manal; El-Yazbi, Ahmed F; ... more authors ( Frontiers Media , 2021 , Article)
      Globally, over two million people have perished due to the recent pandemic caused by SARS-CoV-2. The available epidemiological global data for SARS-CoV-2 portrays a higher rate of severity and mortality in males. Analyzing ...
    • Nanomedicine as a Potential Tool against Monkeypox. 

      Mohamed, Nura Adam; Zupin, Luisa; Mazi, Sarah Ismail; Al-Khatib, Hebah A; Crovella, Sergio ( MDPI , 2023 , Article Review)
      Human monkeypox is a rare viral zoonosis that was first identified in 1970; since then, this infectious disease has been marked as endemic in central and western Africa. The disease has always been considered rare and ...
    • Relative infectiousness of SARS-CoV-2 vaccine breakthrough infections, reinfections, and primary infections. 

      Abu-Raddad, Laith J; Chemaitelly, Hiam; Ayoub, Houssein H; Tang, Patrick; Coyle, Peter; ... more authors ( Springer , 2022 , Article)
      SARS-CoV-2 breakthrough infections in vaccinated individuals and in those who had a prior infection have been observed globally, but the transmission potential of these infections is unknown. The RT-qPCR cycle threshold ...