Korean J Pediatr Infect Dis.  2002 Nov;9(2):182-192. 10.14776/kjpid.2002.9.2.182.

Adenoviral Lower Respiratory Tract Infections in Children; Serotypes and Clinical Characteristics

• Shin SH
• Lee HJ
• Yoon HS

• KMID: 2440111
• DOI: http://doi.org/10.14776/kjpid.2002.9.2.182

Abstract

PURPOSE
This study was performed to characterize the epidemiologic and clinical features of acute adenoviral lower respiratory tract infections(LRTIs).
METHODS
Virological analysis was done from respiratory specimens obtained from patients with LRTIs hospitalized to other hospitals and referred to the Department of Pediatrics, Seoul National University Children's Hospital(SNUCH) from June 1998 to July 2000. Viral diagnosis was made by isolation of viruses employing HEp-2 cell culture and indirect immunofluorescent staining with monoclonal antibodies. Serotypes of adenoviruses were determined by neutralization test using antiserum for types 1, 2, 3, 4, 5, 6, 7 and 11. Medical records of children admitted to the SNUCH were reviewed retrospectively.
RESULTS
Adenovirus was isolated from 118(9.0%) of 1,305 children with LRTIs. Serotypes were 3(39.0%), 7(16.9%), 1(11.0%), 2(7.6%), 4(7.6%), 6(5.9%), 11(2.5%), and 5(0.8%) and 10 strains(8.5%) were not neutralized by antisera included in the study. Infections by type 3 and type 7 occurred in outbreaks. Male to female ratio was 1.0:0.9 and mean age was 1.95 years. The clinical diagnoses were pneumonia(83%), acute tracheobronchitis(12%) and bronchiolitis(5%). Associated symptoms, signs and abnormal laboratory findings included cough(100%), sputum(73.5%), fever(54.2%), rale(59.3%), wheezing(34%), anemia(35%) and leukopenia(15.8%). Mortality was in 13.5%. Residual radiologic sequelae was identified in 32.6% of the patients followed.
CONCLUSION
These data confirms that adenovirus may cause severe lower respiratory tract diseases, and infections by type 3 and 7 may occured in outbreaks.

Keyword

Adenovirus; LRTIs(lower respiratory tract infection); Serotypes

MeSH Terms

Adenoviridae
Antibodies, Monoclonal
Cell Culture Techniques
Child*
Diagnosis
Disease Outbreaks
Female
Humans
Immune Sera
Male
Medical Records
Mortality
Neutralization Tests
Pediatrics
Respiratory System*
Respiratory Tract Diseases
Respiratory Tract Infections*
Retrospective Studies
Seoul
Serogroup*
Antibodies, Monoclonal
Immune Sera