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Pattern of Occurrence of Mycoplasma pneumoniae Pneumonia in Admitted Children : Southern Central Korea, from 1989 to 2002

Journal of the Korean Pediatric Society 2003;46(5):474-479.
Published online May 15, 2003.
Pattern of Occurrence of Mycoplasma pneumoniae Pneumonia in Admitted Children : Southern Central Korea, from 1989 to 2002
Ki Su Kang, Hyang-Ok Woo
Department of Pediatrics, Gyeongsang National University College of Medicine, Jinju, Korea
소아 입원 환자에서 관찰된 Mycoplasma pneumoniae 폐렴의 발생 양상 : 최근 13년간(1989-2002년) 경남 서부지역
강기수, 우향옥
경상대학교 의과대학 소아과학교실
Correspondence: 
Hyang-Ok Woo, Email: howoo@gshp.gsnu.ac.kr
Abstract
Purpose
: The determination of exposure and prevalence of Mycoplasma pneumoniae pneumonia of any region should be helpful for clinical diagnosis. We studied the pattern of occurrence of M. pneumoniae pneumonia among children living in southern central Korea during the last 13 years. This area has a relatively small population and less mobility compared with metropolitan areas.
Methods
: We performed a retrospective descriptive study of 143 patients admitted to the pediatrics ward among all the patients aged less than 15 years old diagnosed with M. pneumoniae pneumonia at our hospital, from July 1989 to June 2002.
Results
: The percentiles of incidence per year compared to the total patients admitted to a pediatric ward per year were 0.52% in 1989, 0.48% in 1990, 0.13% in 1991, 0% in 1992, 1.85% in 1993, 1.00% in 1994, 0.15% in 1995, 0.53% in 1996, 1.75% in 1997, 0.65% in 1998, 0.24% in 1999, 1.14% in 2000, 1.30% in 2001, 0.53% in 2002. In the peak incidence of monthly distribution for two consecutive years with outbreaks, its outbreak in the first year was concentrated in late fall and winter, but its outbreak in the following year was earlier than first year. There was peak incidence of age distribution in 4-5 years. It is shown gradually that age distributions per year of outbreak became earlier in age.
Conclusion
: The occurrences of M. pneumoniae pneumonia in southern central Korea occurred at 3-4 year intervals, 1-2 years in duration, compared to three year intervals, one year in duration, according to reports from metropolitan areas before 1997.
Key Words: Mycoplasma pneumoniae pneumonia, Prevalence


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