Gheyath K. Nasrallah
College of Health Sciences, Bahrain
EpidemiologyAcute toxicityInternal medicineGenotypeDemographyVirologyAntibodyChemistryImmunologyVirusHepatitisZebrafishTransmission (medicine)AsymptomaticSeroprevalenceDiseasePopulationToxicitySevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2)Coronavirus disease 2019 (COVID-19)Incidence (epidemiology)SerologyMedicineBiologyImmune systemCell biology
Publications 138
#1Shekhah Ali Al-Kandari (Kuniv: Kuwait University)H-Index: 3
#2Aboubakr M. Abdullah (Center for Advanced Materials)H-Index: 24
Last. Talal Altahtamouni (Florida State University College of Arts and Sciences)H-Index: 3
view all 0 authors...
Boron nitride (BN) and reduced graphene oxide (rGO) of different loadings were composited with commercial P25 TiO2 (Ti) through the hydrothermal method. The as-prepared nanocomposites were characterized using various techniques: X-ray photoelectron spectroscopy, X-ray diffraction, thermal gravimetric analysis, Fourier transform infrared and Raman spectroscopies, and transmission and scanning electron microscopies. It was observed that 10% and 0.1% of BN and rGO, respectively, loaded on TiO2 (10B...
#1Sara Taleb (Khalifa University)H-Index: 5
#2Khalid Alansari (Hamad Medical Corporation)H-Index: 1
Last. Hadi M. Yassine (College of Health Sciences, Bahrain)H-Index: 28
view all 0 authors...
Abstract null null Background null 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, including pregnant women. This study aimed to determine the magnitude and nature of RSV-directed maternal antibodies (matAbs) in hospitalized children with RSV infection. null null null Methods null 65 paired blood samples were collected from RSV-...
#1Gheyath K. Nasrallah (Qatar University)H-Index: 27
#2Soha R. Dargham (Cornell University)H-Index: 11
Last. Laith J. Abu-Raddad (Cornell University)H-Index: 67
view all 24 authors...
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 testing was performed on 394 individuals. SARS-CoV-2-IgG seroprevalence was 42.9% (95% CI 38.1-47.8%), 40.6% (95% CI 35.9-45.5%), and 42.4% (95% CI 37.6-47.3%) using the CL-900i, VidasIII, and Elecsys assays, respectively. Between the three assays, overall, positive, and neg...
#1Salma Younes (Hamad Medical Corporation)H-Index: 6
#2Muthanna Samara (KUL: Kingston University)H-Index: 18
Last. Nader Al-Dewik (Hamad Medical Corporation)H-Index: 8
view all 15 authors...
Preterm birth (PTB) and early term birth (ETB) are associated with high risks of perinatal mortality and morbidity. While extreme to very PTBs have been extensively studied, studies on infants born at later stages of pregnancy, particularly late PTBs and ETBs, are lacking. In this study, we aimed to assess the incidence, risk factors, and feto-maternal outcomes of PTB and ETB births in Qatar. We examined 15,865 singleton live births using 12-month retrospective registry data from the PEARL-Peris...
#1Peter Coyle (Hamad Medical Corporation)H-Index: 13
#2Hiam Chemaitelly (Cornell University)H-Index: 21
Last. Laith J. Abu-Raddad (Cornell University)H-Index: 67
view all 31 authors...
Summary The study objective was to assess level of detectable SARS-CoV-2 antibodies in the urban population of Qatar. Antibody testing was performed on residual blood specimens for 112,941 individuals (∼10% of Qatar’s urban population) attending for routine/other clinical care between May 12-September 9, 2020. Seropositivity was 13.3% (95% CI=13.1-13.6%) and was independently associated with sex, age, nationality, clinical-care encounter type, and testing date. Median optical density (antibody t...
1 CitationsSource
#1Roberta Giordo (College of Health Sciences, Bahrain)H-Index: 13
#2Yusra M. A. Ahmed (College of Health Sciences, Bahrain)
Last. Gianfranco Pintus (University of Sassari)H-Index: 32
view all 8 authors...
Diabetes-associated complications, such as retinopathy, nephropathy, cardiomyopathy, and atherosclerosis, the main consequences of long-term hyperglycemia, often lead to organ dysfunction, disability, and increased mortality. A common denominator of these complications is the myofibroblast-driven excessive deposition of extracellular matrix proteins. Although fibroblast appears to be the primary source of myofibroblasts, other cells, including endothelial cells, can generate myofibroblasts throu...
#1Mohamed H. Al-Thani (Qatar Airways)H-Index: 13
#2Elmoubasher Farag (Qatar Airways)H-Index: 13
Last. Laith J. Abu-Raddad (Cornell University)H-Index: 67
view all 53 authors...
1 CitationsSource
#1Laith J. Abu-Raddad (Cornell University)H-Index: 67
#2Hiam Chemaitelly (Cornell University)H-Index: 21
Last. Roberto Bertollini (Qatar Airways)H-Index: 11
view all 23 authors...
Abstract 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 in Qatar. Methods All SARS-CoV-2 antibody-positive persons from April 16 to December 31, 2020 with a PCR-positive swab ≥14 days after the first-positive antibody test were investigated for evidence of reinfection. Viral genome sequencing was conducted for paired vir...
1 CitationsSource