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Epidemiology and Clincal Analysis of Acute Viral Respiratory Tract Infections in Children(September, 1998-May, 2003)

Korean Journal of Pediatrics 2005;48(3):266-275.
Published online March 15, 2005.
Epidemiology and Clincal Analysis of Acute Viral Respiratory Tract Infections in Children(September, 1998-May, 2003)
Su-Jin Lee1, Eon-Woo Shin1, Eun-Young Park1, Phil-Soo Oh1, Kwang-Nam Kim1, Hae-Sun Yoon1, Kyu-Man Lee2
1Department of Pediatrics, College of Medicine, Hallym University, Seoul, Korea
2Department of Laboratory Medicine, College of Medicine, Hallym University, Seoul, Korea
소아 급성 바이러스성 하기도 감염의 유행 및 임상양상 (1998년 9월-2003년 5월)
이수진1, 신언우1, 박은영1, 오필수1, 김광남1, 윤혜선1, 이규만2
1한림대학교 의과대학 소아과학교실
2한림대학교 의과대학 진단검사의학교실
Kwang-Nam Kim, Email: kwangnamkim@empal.com
: Acute respiratory tract infections are the most common illnesses in children. The great majority of these infections involving lower respiratory tracts infections(LRTIs) are caused by respiratory viruses such as respiratory syncytial virus(RSV), parainfluenza virus(PIV), influenza virus (Flu), and adenovirus(ADV), etc. Our purpose was to determine seasonal epidemiology and clinical characteristic features of each viral infection.
: Nasopharyngeal aspirate(NPA)s were collected from 4,554 hospitalized children diagnosed as LRTIs on the first day of admission. The study period was from September 1998(Autumn) through May 2003(Spring). Respiratory viruses were detected in 881(19 percent) cases by isolation of the virus or by antigen detection method using indirect immunofluorescent staining. We reviewed the medical records of 837 cases retrospectively.
: The identified pathogens were RSV in 485 cases(55 percent), PIV in 152 cases(17 percent), FluA in 114 cases(13 percent), ADV in 79 cases(9 percent) and FluB in 51 cases(6 percent). Outbreaks of RSV occurred every year, mostly in the November through December period and of PIV in the April through June period. LRTIs by FluA reached the highest level in January, 2002. FluB infection showed an outbreak in April, 2002. The clinical diagnoses of viral LRTIs were bronchiolitis in 395 cases(47 percent), pneumonia in 305 cases(36 percent), croup in 73 cases(9 percent) and tracheobronchitis in 64 cases(8 percent).
: Viruses are one of the major etiologic agents of acute LRTIs in chidren. Therefore, we must continue to study their seasonal occurrence and clinical features to focus on management, and also for reasons of prevention.
Key Words: Respiratory tract infection , Respiratory syncytial virus , Parainfluenza virus , Influenza virus , Adenovirus , Children

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