Publication date: Dec 09, 2025
This study aimed to characterize the incidence, seasonality, and co-infection patterns of respiratory syncytial virus (RSV), influenza A and B, and SARS-CoV-2 among hospitalized children aged 0-5 years in Hamedan Province, a semi-arid region in western Iran, from April 2023 to March 2024. Key research questions included assessing post-pandemic shifts in viral seasonality, evaluating the extent of RSV circulation, and determining the frequency of co-infections in a resource-limited pediatric setting where regional data remain scarce. A total of 586 nasopharyngeal/oropharyngeal samples were collected from children aged 0-5 years hospitalized with acute respiratory symptoms (≥ 2 of: fever ≥ 38 ^0C, cough, dyspnea, oxygen saturation
| Concepts | Keywords |
|---|---|
| Influenza | Epidemiology |
| Iran | Iran |
| Limited | Pediatric hospitalization |
| Oropharyngeal | Post-COVID-19 surveillance |
| SARS-CoV-2 | |
| Seasonality |
Semantics
| Type | Source | Name |
|---|---|---|
| disease | MESH | COVID-19 |
| disease | MESH | Influenza |
| disease | MESH | co-infection |
| pathway | KEGG | Influenza A |
| disease | MESH | included |
| disease | MESH | cough |
| disease | MESH | dyspnea |
| drug | DRUGBANK | Oxygen |