Riyadh
Saudi Arabia · 3 retained evidence mentions
Source-grounded findings
Supporting evidence
| Type | Entity | Source evidence | Confidence | Extractor |
|---|---|---|---|---|
| population | Saudi Arabia, Riyadh | “Molecular Surveillance of Coronaviruses in Riyadh (2025-2026): Persistent Genotype C and Conserved N-Glycosylation Motifs in Human Coronavirus OC43. We investigated the molecular epidemiology and spike (S) protein structural variation of circulating coronaviruses in Riyadh, Saudi Arabia, during the 2025-2026 winter season, with particular emphasis on genotype persistence and glycosylation architecture in HCoV-OC43. Among 293 nasopharyngeal aspirates (NPAs) collected from hospitalized patients with acute respiratory illness, HCoV-OC43 was detected in 26 cases (8.87%), whereas other seasonal coronaviruses were not identified. Phylogenetic reconstruction demonstrated that all Riyadh isolates clustered within genotype C, together with previously circulating local strains, supporting sustained endemic persistence and in situ evolution. A genotype-associated K68N substitution generated an additional N-glycosylation motif (68NGTD) in multiple Riyadh isolates, potentially modifying local glycan shielding without disrupting the overall glycosylation framework. Collectively, these findings indicate that genotype C persistence in Riyadh is accompanied by conserved S architecture and subtle glycosylation adjustments that may modulate immune recognition while maintaining structural integrity.” | 0.95 | saudi_context_rules_v1 |
| population | Saudi Arabia, Riyadh | “Resource Utilization and Caring Cost of People Living with Human Immunodeficiency Virus (PLHIV) in Saudi Arabia: A Tertiary Care University Hospital Experience. The aim of this study is to determine healthcare and treatment costs of caring for PLHIV at one of the tertiary care university hospitals in Riyadh, Saudi Arabia. The majority of patients were male (85.7%) and Saudi (88.1%). During the study period, 26 patients (61.9%) were initiated on a single-tablet regimen.” | 0.95 | saudi_context_rules_v1 |
| population | Saudi Arabia, Riyadh | “PARTICIPANTS: All the cases with confirmed tissue diagnosis of orbital rhabdomyosarcoma presenting at a tertiary eye hospital in Riyadh, Saudi Arabia during the period 1985-2015. METHODS: Charts and histological slides of 26 patients were reviewed.” | 0.95 | saudi_context_rules_v1 |