Human Rhinovirus and Disease Severity in Children
OBJECTIVE: To evaluate retrospectively human rhinovirus (HRV) infections in children up to 5 years old and factors involved in disease severity.
METHODS: Nasopharyngeal aspirates from 434 children presenting a broad range of respiratory infection symptoms and severity degrees were tested for presence of HRV and 8 other respiratory viruses. Presence of host risk factors was also assessed.
RESULTS: HRV was detected in 181 (41.7%) samples, in 107 of them as the only agent and in 74 as coinfections, mostly with respiratory syncytial virus (RSV; 43.2%). Moderate to severe symptoms were observed in 28.9% (31/107) single infections and in 51.3% (38/74) coinfections (P = .004). Multivariate analyses showed association of coinfections with lower respiratory tract symptoms and some parameters of disease severity, such as hospitalization. In coinfections, RSV was the most important virus associated with severe disease. Prematurity, cardiomyopathies, and noninfectious respiratory diseases were comorbidities that also were associated with disease severity (P = .007).
CONCLUSIONS: Our study showed that HRV was a common pathogen of respiratory disease in children and was also involved in severe cases, causing symptoms of the lower respiratory tract. Severe disease in HRV infections were caused mainly by presence of RSV in coinfections, prematurity, congenital heart disease, and noninfectious respiratory disease.
- AdV —
- ARI —
- acute respiratory infection
- HC-UFU —
- Hospital de Clínicas of Universidade Federal de Uberlândia
- hMPV —
- human metapneumovirus
- HRV —
- human rhinovirus
- ICD-10 —
- International Classification of Diseases, 10th Revision
- LRTI —
- lower respiratory tract infection
- PIV —
- parainfluenza virus
- RSV —
- respiratory syncytial virus
- URTI —
- upper respiratory tract infection
- Accepted November 22, 2013.
- Copyright © 2014 by the American Academy of Pediatrics