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Immune histories and natural infection protection during the omicron era

Chemaitelly, H. S.; Ayoub, Houssein H.; Bobrovitz, Niklas Jh; Coyle, Peter Valentine; Tang, Patrick K.C.; ... more authors ... less authors ( Springer Nature , 2025 , Article)

Background: Past immunological events can either enhance or compromise an individual's future immune protection. This study investigated how different severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) natural ...

Insects in agricultural greenhouses: a metagenomic analysis of microbes in Trialeurodes vaporariorum infesting tomato and cucumber crops

Qush, Abeer; Assaad, Nada; Alkhayat, Fatima Abdulla; Al-Kuwari, Mohammed Saif; Al-Khalaf, Nasser; ... more authors ... less authors ( Frontiers Media SA , 2025 , Article)

Introduction: With the predicted 9-10 billion world population increase by 2050 and its accompanying need for sustainable food production, and with the harsh climate conditions challenging agriculture and food security in ...

Enhancing Influenza Detection through Integrative Machine Learning and Nasopharyngeal Metabolomic Profiling: A Comprehensive Study

Sumon, Md. S.; Hossain, Md S.; Al-Sulaiti, Haya; Yassine, Hadi M.; Chowdhury, Muhammad E. H. ( Multidisciplinary Digital Publishing Institute (MDPI) , 2024 , Article)

Background/Objectives: Nasal and nasopharyngeal swabs are commonly used for detecting respiratory viruses, including influenza, which significantly alters host cell metabolites. This study aimed to develop a machine learning ...

Seroprevalence and detection of Human herpesvirus-8 (HHV-8) among healthy blood donors residing in Qatar

Zedan, Hadeel T.; Elkhider, Alaa; Hicazi, Asalet; Amanullah, Fathima; Al-Sadeq, Duaa W.; ... more authors ... less authors ( Elsevier , 2024 , Article)

BackgroundHuman herpesvirus 8 (HHV-8) is a critical causative agent behind Kaposi sarcoma (KS), an oncogenic disease with profound consequences in immunocompromised individuals. Studies suggested HHV-8 seroprevalence in ...

Seroprevalence of influenza A H1N1 and influenza D viruses in ruminants in Qatar

Hadeel T., Zedan; Alziftawi, Tasnim; Abdalla, Abrar; Yassine, Hadi M. ( Elsevier , 2025 , Article)

BackgroundInfluenza is among the most common viruses affecting humans and many animals worldwide. While influenza A (IAV) and D (IDV) viruses are associated with respiratory disease in humans and animals, respectively, ...

Evaluating Hospital Admission Data as Indicators of COVID-19 Severity: A National Assessment in Qatar.

Sukik, Layan; Chemaitelly, Hiam; Ayoub, Houssein H; Coyle, Peter; Tang, Patrick; ... more authors ... less authors ( Oxford University Press , 2025 , Article)

Accurately assessing SARS-CoV-2 infection severity is essential for understanding the health impact of the infection and evaluating the effectiveness of interventions. This study investigated whether SARS-CoV-2-associated ...

Evaluating chemiluminescent immunoassays for syphilis detection: A comparative analysis

Ahmed, Ismail; Younes, Nadin; Ayoub, Houssein; Nasrallah, Dana F.; Al-Emadi, Jawaher A.; ... more authors ... less authors ( Elsevier , 2025 , Article)

BackgroundSyphilis, caused by Treponema pallidum (TP), remains a significant global public health concern, with approximately 8 million new cases annually. Diagnosing syphilis is challenging due to its often-asymptomatic ...

Prevalence of syphilis infection among migrant workers in Qatar: a nationwide cross-sectional survey

Nasrallah, Gheyath K; Chemaitelly, Hiam; Ismail, Ahmed Ismail Ahmed; Al-Sadeq, Duaa W; Amanullah, Fathima H; ... more authors ... less authors ( BMJ Publishing Group , 2024 , Article)

Objectives Scant data are available on syphilis infection within migrant populations worldwide and in the population of the Middle East and North Africa region. This study investigated the prevalence of both lifetime and ...

Protection conferred by SARS-CoV-2 infection across a spectrum of reinfection symptoms and severities

Sukik, Layan; Chemaitelly, Hiam; Ayoub, Houssein H; Coyle, Peter; Tang, Patrick; ... more authors ... less authors ( BMJ Publishing Group , 2025 , Article)

Background SARS-CoV-2 infection is associated with protection against reinfection. This study analysed this protection across different reinfection symptoms and severities, comparing the preomicron and omicron eras. Methods ...

Comprehensive analysis of human coronavirus antibody responses in ICU and non-ICU COVID-19 patients reveals IgG3 against SARS-CoV-2 spike protein as a key biomarker of disease severity

Ali, Fatma H.; Gentilcore, Giusy; Al-Jighefee, Hadeel T.; Taleb, Sara Ahmad; Hssain, Ali Ait; ... more authors ... less authors ( Microbiology Society , 2025 , Article)

Introduction. Pre-existing immunity to human coronaviruses (HCoVs) may shape the immune response in COVID-19 patients. Increasing evidence suggests that immune cross-reactivity between SARS-CoV-2 and other coronaviruses ...