COVID-19 Research: Recent submissions

Now showing items 601-620 of 822

    • Effectiveness of the BNT162b2 Covid-19 Vaccine against the B.1.1.7 and B.1.351 Variants. 

      Abu-Raddad, Laith J; Chemaitelly, Hiam; Butt, Adeel A ( Massachusetts Medical Society , 2021 , Other)
      The messenger RNA vaccine BNT162b2 (Pfizer–BioNTech) has 95% efficacy against coronavirus disease 2019 (Covid-19). Qatar launched a mass immunization campaign with this vaccine on December 21, 2020. As of March 31, 2021, ...

    • Reinfections in COVID-19 Patients: Impact of Virus Genetic Variability and Host Immunity 

      Fakhroo, Aisha; AlKhatib, Hebah A; Al Thani, Asmaa A; Yassine, Hadi M ( MDPI , 2021 , Article)
      The COVID-19 pandemic is still posing a devastating threat to social life and economics. Despite the modest decrease in the number of cases during September-November 2020, the number of active cases is on the rise again. ...

    • Repurposing Ivermectin for COVID-19: Molecular Aspects and Therapeutic Possibilities 

      Wehbe, Zena; Wehbe, Maya; Iratni, Rabah; Pintus, Gianfranco; Zaraket, Hassan; ... more authors ( Frontiers Media , 2021 , Article)
      As of January 2021, SARS-CoV-2 has killed over 2 million individuals across the world. As such, there is an urgent need for vaccines and therapeutics to reduce the burden of COVID-19. Several vaccines, including mRNA, ...

    • Epidemiology of SARS-CoV2 in Qatar's primary care population aged 10 years and above 

      Syed, Mohamed Ahmed; Al Nuaimi, Ahmed Sameer; A/Qotba, Hamda Abdulla; Nasrallah, Gheyath K; Althani, Asmaa A; ... more authors ( BMC , 2021 , Article)
      There is an urgent need to elucidate the epidemiology of the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV2) and characterize its potential impact. Investing in characterising the SARS-CoV2 will help plan and ...

    • Nasopharyngeal Expression of Angiotensin-Converting Enzyme 2 and Transmembrane Serine Protease 2 in Children within SARS-CoV-2-Infected Family Clusters. 

      Hasan, Mohammad Rubayet; Ahmad, Muneera Naseer; Dargham, Soha Roger; Zayed, Hatem; Al Hashemi, Alaa; ... more authors ( American Society for Microbiology , 2021 , Article)
      Lower levels of angiotensin-converting enzyme 2 (ACE2) and transmembrane serine protease 2 (TMPRSS2) in the nasal epithelium of children may be related to a lower incidence of severe acute respiratory syndrome coronavirus ...

    • Attitudes and Intentions toward COVID-19 Vaccination among Health Professions Students and Faculty in Qatar 

      Zaidi, Amine; Elmasaad, Amal; Alobaidli, Hend; Sayed, Rana; Al-Ali, Dana; ... more authors ( MDPI , 2021 , Article)
      A population’s desire to take the COVID-19 vaccine is an important predictor of a country’s future pandemic management. This cross-sectional study examines the impact of psychological and sociodemographic factors on attitudes ...

    • 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 ...

    • Association of Prior SARS-CoV-2 Infection With Risk of Breakthrough Infection Following mRNA Vaccination in Qatar. 

      Abu-Raddad, Laith J; Chemaitelly, Hiam; Ayoub, Houssein H; Yassine, Hadi M; Benslimane, Fatiha M; ... more authors ( American Medical Association , 2021 , Article)
      The effect of prior SARS-CoV-2 infection on vaccine protection remains poorly understood. To assess protection from SARS-CoV-2 breakthrough infection after mRNA vaccination among persons with vs without prior SARS-CoV-2 ...

    • Real-Time SARS-CoV-2 Genotyping by High-Throughput Multiplex PCR Reveals the Epidemiology of the Variants of Concern in Qatar 

      R. Hasan, Mohammad; K.R. Kalikiri, Mahesh; Mirza, Faheem; Sundararaju, Sathyavathi; Sharma, Anju; ... more authors ( Elsevier , 2021 , Article)
      Complementing whole genome sequencing strategies with high-throughput multiplex RT-qPCR genotyping allows for more comprehensive and real-time tracking of SARS-CoV-2 variants of concern. During the second and third waves ...

    • ABO blood group association and COVID-19. COVID-19 susceptibility and severity: a review 

      Shibeeb, Sapha; Khan, Aisha ( Elsevier , 2021 , Article)
      Introduction The SARS-CoV-2 pandemic has been affecting the health and economic, as well as social, life of the entire globe since the end of 2019. The virus causes COVID-19, with a wide range of symptoms among the infected ...

    • External Validation and Recalibration of the CURB-65 and PSI for Predicting 30-Day Mortality and Critical Care Intervention in Multiethnic Patients with COVID-19 

      Elmoheen, Amr; Abdelhafez, Ibrahim; Salem, Waleed; Bahgat, Mohamed; Elkandow, Ali; ... more authors ( Elsevier , 2021 , Article)
      Objectives: To validate and recalibrate the CURB-65 and pneumonia severity index (PSI) in predicting 30-day mortality and critical care intervention (CCI) in a multiethnic population with COVID-19, along with evaluating ...

    • COVID-19 Vaccine Platforms: Challenges and Safety Contemplations 

      Al-Jighefee, Hadeel; Najjar, Hoda; Ahmed, Muna; Qush, Abeer; Awwad, Sara; ... more authors ( MDPI , 2021 , Article Review)
      The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has become a pandemic as of March 2020, creating a global crisis and claiming millions of lives. To halt the pandemic and alleviate its impact on society, ...

    • 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 infection presented as Guillain-Barre Syndrome: Report of two new cases and review of 116 reported cases and case series 

      Elzouki, Abdel-Naser; A.M. Osman, Maab; A.E. Ahmed, Mohanad; Al-Abdulmalek, Abdulrahman; Altermanini, Mohammad; ... more authors ( Elsevier , 2021 , Article)
      Aims: Corona virus disease 2019 (COVID 19) is a pandemic infectious disease of 2020, which often presents with respiratory and gastrointestinal symptoms. The behavior of the virus and its full clinical picture has not been ...

    • Waning of BNT162b2 Vaccine Protection against SARS-CoV-2 Infection in Qatar. 

      Chemaitelly, Hiam; Tang, Patrick; Hasan, Mohammad R; AlMukdad, Sawsan; Yassine, Hadi M; ... more authors ( Massachusetts Medical Society , 2021 , Article)
      Waning of vaccine protection against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection or coronavirus disease 2019 (Covid-19) is a concern. The persistence of BNT162b2 (Pfizer-BioNTech) vaccine ...

    • Pfizer-BioNTech mRNA BNT162b2 Covid-19 vaccine protection against variants of concern after one versus two doses. 

      Abu-Raddad, Laith J; Chemaitelly, Hiam; Yassine, Hadi M; Benslimane, Fatiha M; Al Khatib, Hebah A; ... more authors ( Oxford University Press , 2021 , Article)
      Strategies for rolling out vaccination against Coronavirus Disease 2019 (Covid-19) varied across countries. A key question is whether delaying administration of the second vaccine dose to vaccinate the largest number of ...

    • SARS-CoV-2 antibody-positivity protects against reinfection for at least seven months with 95% efficacy 

      Laith J., Abu-Raddad; Chemaitelly, Hiam; Coyle, Peter; Malek, Joel A.; Ahmed, Ayeda A.; ... more authors ( Elsevier , 2021 , Article)
      Background Reinfection with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been documented, raising public health concerns. SARS-CoV-2 reinfections were assessed in a cohort of antibody-positive persons ...

    • mRNA-1273 COVID-19 vaccine effectiveness against the B.1.1.7 and B.1.351 variants and severe COVID-19 disease in Qatar 

      Chemaitelly, Hiam; Yassine, Hadi M.; Benslimane, Fatiha M.; Al Khatib, Hebah A.; Tang, Patrick; ... more authors (2021 , Article)
      The SARS-CoV-2 pandemic continues to be a global health concern. The mRNA-1273 (Moderna) vaccine was reported to have an efficacy of 94.1% at preventing symptomatic COVID-19 due to infection with ‘wild-type’ variants in a ...

    • COVID-19 and Migrants in the GCC states: Challenges, responses and key lessons 

      Rahman, Md Mizanur ( College of Arts and Sciences - Gulf Studies Center , 2021 , Working Paper)
      As the COVID-19 pandemic unfolds, the GCC countries face an unprecedented challenge of controlling the spiralling COVID-19 cases. The challenge has become even more formidable in containing the virus among non-national ...

    • Occupational changes during the COVID-19 lockdown in Jordan 

      Malkawi, Somaya H.; Alqatarneh, Nisrin S.; Malkawi, Asma H.; Amro, Ahmad F.Saleem; Crowe, Terry K. ( Taylor and Francis , 2021 , Article)
      Background: Measures to limit the spread of COVID-19 have disrupted the lives of countless millions of individuals worldwide. Objective: To explore the experiences of occupational disruption and changing social roles among ...