AJ Daley, MBBS, BAppSc(MLS), DipPaed, FRACP, Infectious Diseases Registrar. R Nallusamy, MBBS, MRCP, Visiting Fellow. D Isaacs, MD, FRACP, Director.
Comparison of influenza A and influenza B virus infection in hospitalized children
Article first published online: 24 DEC 2001
Journal of Paediatrics and Child Health
Volume 36, Issue 4, pages 332–335, August 2000
How to Cite
Daley, A., Nallusamy, R. and Isaacs, D. (2000), Comparison of influenza A and influenza B virus infection in hospitalized children. Journal of Paediatrics and Child Health, 36: 332–335. doi: 10.1046/j.1440-1754.2000.00533.x
- Issue published online: 24 DEC 2001
- Article first published online: 24 DEC 2001
- influenza viruses;
- respiratory tract infection
Background: Influenza A and B viruses were cocirculating in Australia in the winter of 1997.
Objective: To compare the clinical and demographic features of children with influenza A or influenza B virus infection admitted to a paediatric tertiary referral centre.
Methodology: Retrospective chart review of 91 hospitalized children with culture-proven influenza A or B virus infection during 1997.
Results: Thirty-six (56%) of 64 children with influenza A were under 12 months of age compared with seven (26%) of 27 children with influenza B virus infection (P = 0.02). Influenza B virus infection was more common in children with underlying medical problems (P = 0.01). Neurological manifestations were present in eight (12.5%) of 64 children with influenza A and none with influenza B virus infection (P = 0.09). There were no significant differences in signs and symptoms of children with influenza A and B virus infection, in severity of illness or in duration of hospital stay.
Conclusions: A greater proportion of children admitted with influenza A virus infection were under 12 months of age. Influenza B virus infection is associated more commonly with underlying medical disorders. It is not possible to differentiate between influenza A or B virus infection from presenting clinical signs and symptoms.