Korean J Pediatr.
2011 Mar;54(3):117-122. 10.3345/kjp.2011.54.3.117.
Novel influenza A (H1N1) 2009 infection in the pediatric patients with hematologic and oncologic diseases in the Yeungnam region
- Affiliations
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- 1Department of Pediatrics, College of Medicine, Yeungnam University, Daegu, Korea. johah@med.yu.ac.kr
- 2Department of Pediatrics, College of Medicine, Kyungbook National University, Daegu, Korea.
- 3Department of Pediatrics, College of Medicine, Keimyung University, Daegu, Korea.
- 4Department of Pediatrics, College of Medicine, Daegu Catholic University, Daegu, Korea.
- 5Department of Pediatrics, College of Medicine, Pusan National University, Busan, Korea.
- 6Department of Pediatrics, College of Medicine, Inje university, Busan, Korea.
- 7Department of Pediatrics, College of Medicine, Gyeongsang National University, Jinju, Korea.
- KMID: 2284376
- DOI: http://doi.org/10.3345/kjp.2011.54.3.117
Abstract
- PURPOSE
Natural history and consequences of the novel 2009 influenza A H1N1 (2009 H1N1) infection in immunocompromised pediatric patients are not yet fully understood. In this study, we investigated the clinical features and outcomes of the 2009 H1N1 infection in pediatric patients with hematological and oncological diseases.
METHODS
We retrospectively reviewed the medical records of 528 patients who had hematological and oncological diseases and who were treated at 7 referral centers located in the Yeungnam region. Among the 528 patients, 27 with definite diagnosis of 2009 H1N1 infection were the subjects of this study. All patients were divided into the following 3 groups: patients who were receiving chemotherapy (group 1), patients who were immunosuppressed due to a non-malignant hematological disease (group 2), and patients who were off chemotherapy and had undergone their last chemotherapy course within 2 years from the influenza A pandemic (group 3).
RESULTS
All 28 episodes of 2009 H1N1 infection were treated with the antiviral agent oseltamivir (Tamiflu(R)), and 20 episodes were treated after hospitalization. Group 1 patients had higher frequencies of lower respiratory tract infection and longer durations of fever and hospitalization as compared to those in group 2. Ultimately, all episodes resolved completely with no complications.
CONCLUSION
These results suggest that early antiviral therapy did not influence the morbidity or mortality of pediatric patients with hematological and oncological diseases in the Yeungnam region of Korea after the 2009 H1N1 infection. However, no definite conclusions can be drawn because of the small sample size.
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