• Analytic comparison between three high-throughput commercial SARS-CoV-2 antibody assays reveals minor discrepancies in a high-incidence population 

      Nasrallah, Gheyath K; Dargham, Soha R; Shurrab, Farah; Al-Sadeq, Duaa W; Al-Jighefee, Hadeel; ... more authors ( Nature Research , 2021 , Article)
      Performance of three automated commercial serological IgG-based assays was investigated for assessing SARS-CoV-2 "ever" (past or current) infection in a population-based sample in a high exposure setting. PCR and serological ...
    • 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 ...
    • 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 ...
    • Can commercial automated immunoassays be utilized to predict neutralizing antibodies after SARS-CoV-2 infection? A comparative study between three different assays. 

      Ismail, Ahmed; Shurrab, Farah M; Al-Jighefee, Hadeel T; Al-Sadeq, Duaa W; Qotba, Hamda; ... more authors ( IMR , 2021 , Article)
      Background: High-throughput assays that can infer neutralizing activity against SARS-CoV-2 are of great importance for assessing the immunity induced by natural infection and COVID-19 vaccines. We aimed to evaluate the ...
    • Dengue and chikungunya seroprevalence among Qatari nationals and immigrants residing in Qatar. 

      Humphrey, John M; Al-Absi, Enas S; Hamdan, Munia M; Okasha, Sara S; Al-Trmanini, Diyna M; ... more authors ( Public Library of Science , 2019 , Article)
      The objective of this study is to characterize the seroprevalence of anti-dengue (DENV) and anti-chikungunya (CHIKV) antibodies among blood donors residing in Qatar who are Middle East and North Africa (MENA) nationals and ...
    • 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, ...
    • Estimating seroprevalence of herpes simplex virus type 1 among different Middle East and North African male populations residing in Qatar. 

      Nasrallah, Gheyath K; Dargham, Soha R; Mohammed, Layla I; Abu-Raddad, Laith J ( BMJ Publishing Group , 2018 , Article)
      HSV-1 epidemiology in the Middle East and North Africa (MENA) remains poorly understood. Our study aimed to measure HSV-1 antibody prevalence (seroprevalence) and its age-distribution among select MENA populations residing ...
    • Health in times of uncertainty in the eastern Mediterranean region, 1990–2013: a systematic analysis for the Global Burden of Disease Study 2013 

      Mokdad, Ali H; Forouzanfar, Mohammad Hossein; Daoud, Farah; El Bcheraoui, Charbel; Moradi-Lakeh, Maziar; ... more authors ( Elsevier, Ltd , 2016 , Article)
      Background: The eastern Mediterranean region is comprised of 22 countries: Afghanistan, Bahrain, Djibouti, Egypt, Iran, Iraq, Jordan, Kuwait, Lebanon, Libya, Morocco, Oman, Pakistan, Palestine, Qatar, Saudi Arabia, Somalia, ...
    • Herpes Simplex Virus Type 2 Seroprevalence among Different National Populations of Middle East and North African Males. 

      Dargham, Soha R; Nasrallah, Gheyath K; Al-Absi, Enas S; Mohammed, Layla I; Al-Disi, Rana S; ... more authors ( Lippincott, Williams & Wilkins , 2018 , Article)
      BACKGROUND: There are limited data on herpes simplex virus type 2 (HSV-2) seroprevalence in the Middle East and North Africa (MENA). We examined country- and age-specific HSV-2 seroprevalence among select MENA populations ...
    • Molecular epidemiology and genotype distribution of Human Papillomavirus (HPV) among Arab women in the state of Qatar 

      Bansal, Devendra; Elmi, Asha A; Skariah, Sini; Haddad, Pascale; Abu-Raddad, Laith J; ... more authors ( BioMed Central Ltd. , 2014 , Article)
      Background: Human Papilloma Virus (HPV) infection is the major cause of cervical cancer worldwide. With limited data available on HPV prevalence in the Arab countries, this study aimed to identify the prevalence and ...
    • Performance evaluation of four type-specific commercial assays for detection of herpes simplex virus type 1 antibodies in a Middle East and North Africa population. 

      Aldisi, Rana S; Elsidiq, Malaz S; Dargham, Soha R; Sahara, Afifah S; Al-Absi, Enas S; ... more authors ( Elsevier , 2018 , Article)
      The number of diagnostic assays for the detection of herpes simplex virus type 1 (HSV-1) antibodies has increased over the years. However, their performance characteristics could vary among global populations. To investigate ...
    • 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 ...
    • Prevalence of Chlamydia trachomatis infection in the general population of women in Qatar 

      Al-Thani, Asma; Abdul-Rahim, Hanan; Alabsi, Enas; Bsaisu, Haneen N; Haddad, Pascale; ... more authors ( BMJ Publishing Group , 2013 , Article)
      Objectives The Arabian Gulf region has limited epidemiological data related to sexually transmitted infections. The objective of this study was to estimate the prevalence of Chlamydia trachomatis infection among general ...
    • SARS-CoV-2 Infection Is at Herd Immunity in the Majority Segment of the Population of Qatar. 

      Al-Thani, Mohamed H; Farag, Elmoubasher; Bertollini, Roberto; Al Romaihi, Hamad Eid; Abdeen, Sami; ... more authors ( Oxford University Press , 2021 , Article)
      Qatar experienced a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) epidemic that disproportionately affected the craft and manual worker (CMW) population, who comprise 60% of the total population. This study ...
    • 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 ...