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ORIGINAL ARTICLE
Korean J Pediatr 2010 October;53(10) :886-891.
doi:https://doi.org/10.3345/kjp.2010.53.10.886
Clinical characteristics of children with 2009 pandemic influenza A (H1N1) admitted in a single institution
Sang In Park (Park SI), Min Ji Kim (Kim MJ), Ho Yeon Hwang (Hwang HY), Chi Eun Oh (Oh CE), Jung Hyun Lee (Lee JH), Jae Sun Park (Park JS)
Department of Pediatrics, Kosin University Gospel Hospital, Busan, Korea
Corresponding Author: Jae Sun Park ,Email: pjs@ns.kosinmed.or.kr
Copyright © 2010 by The Korean Pediatric Society
ABSTRACT
Purpose : This study aims to investigate the clinical characteristics of children diagnosed with the novel influenza A (H1N1) in the winter of 2009 at a single medical institution. Methods : Out of 545 confirmed cases of influenza A (H1N1) in children, using the real time RT-PCR method at Kosin University Gospel Hospital from September to December of 2009, 149 patients and their medical records were reviewed in terms of symptoms, laboratory findings, complications and transmission within a family. Results : Median age of subjects was 7 years (range: 2 months-18 years). New cases increased rapidly from September to reach a peak in November, then declined rapidly. Most frequently observed symptoms were fever (96.7%), cough (73.2%), rhinorrhea (36.9%) and sore throat (31.5%). Average body temperatures on the 1st, 2nd and 3rd hospital day were 38.750.65, 38.080.87 and 37.510.76, respectively. Complete blood counts and biochemical tests performed on the first admission day showed within the reference values in most cases. Of the 82 patients with simple chest radiography, 18 (22%) had pneumonic lesions; multi-focal bronchopneumonia in eleven, single or multi-segmental lobar pneumonia in five, and diffuse interstitial pneumonia in two patients. All of the 149 patients improved from their symptoms and discharged within 9 days of admission without any late complication. Conclusion : Children with 2009 pandemic influenza A (H1N1) at our single institution displayed nonspecific symptoms and laboratory findings, resembling those of common viral respiratory illnesses, and did not appear to develop more severe disease.
Keywords: Influenza A Virus | H1N1 Subtype | Child | Pandemic | Pneumonia
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