Related Experiment Video
Updated: Jun 20, 2026

An In vitro Model to Study Immune Responses of Human Peripheral Blood Mononuclear Cells to Human Respiratory Syncytial Virus Infection
Published on: December 10, 2013
Polyomaviruses KI and WU in children with respiratory tract infection
Andreas Mueller1, Arne Simon, Julia Gillen
1Department of Pediatrics, University of Bonn, Bonn, Germany. a.mueller@ukb.uni-bonn.de
Insights
KI polyomavirus (KIPyV) and WU polyomavirus (WUPyV) were rarely detected in German children with respiratory infections. Further studies are needed to determine the clinical relevance of these newly discovered polyomaviruses.
Area of Science:
- Virology
- Pediatrics
- Infectious Diseases
Background:
- KI polyomavirus (KIPyV) and WU polyomavirus (WUPyV) are recently identified human polyomaviruses.
- These viruses have been associated with respiratory tract infections, necessitating further investigation into their prevalence and impact.
Observation:
- A study screened 229 pediatric patients with acute respiratory tract infections in a German hospital.
- Polymerase chain reaction (PCR) methods were used to detect KIPyV and WUPyV in nasopharyngeal aspirates and bronchoalveolar lavage samples.
Findings:
- KIPyV was detected in 0.9% of patients, and WUPyV in 0.4%, totaling 1.3% positive cases.
- No co-infections with other respiratory viruses were observed, but one immunocompromised patient had co-detection of CMV, EBV, and HHV-6.
- The low detection rate suggests a limited role or specific conditions for KIPyV and WUPyV in pediatric respiratory infections.
Implications:
- The clinical significance of KIPyV and WUPyV in pediatric respiratory infections remains uncertain due to their low prevalence in this cohort.
- Further research is warranted to elucidate the pathogenic potential and clinical impact of these polyomaviruses in children.
- This study highlights the need for ongoing surveillance and characterization of emerging viral pathogens in pediatric populations.
Abstract:
The polyomaviruses KI (KIPyV) and WU (WUPyV) have recently been discovered in specimens from patients with respiratory tract infections. To analyze the frequency and clinical impact in a cohort of pediatric patients in a German University Children's Hospital. Nasopharyngeal aspirates or bronchoalveolar lavage specimens of 229 children with acute respiratory tract infection were screened for KIPyV and WUPyV using polymerase chain reaction-based methods. KIPyV was detected in 2 (0.9%) and WUPyV in 1 (0.4%) patients, without co-infections with other respiratory viruses but with co-detection of CMV, EBV and HHV 6 in one immunocompromised patient. Only a very small proportion (1.3%) of positive samples for KIPyV and WUPyV was documented in this study; the clinical relevance of these viruses remains unclear and requires further evaluation.
Related Concept Videos
Respiratory Syncytial Virus Disease
Poliomyelitis
Cytomegalovirus Disease
Acute Respiratory Failure-II
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
Pneumonia II: Pathophysiology
Acute Respiratory Failure-V
Ensure that patients are monitored continuously for their response to therapy, including changes in...