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Outbreak of Acinetobacter septicemia in a neonatal intensive care unit

Korean Journal of Pediatrics 2006;49(5):494-499.
Published online May 15, 2006.
Outbreak of Acinetobacter septicemia in a neonatal intensive care unit
Myo Jing Kim, Hye Jin Lee, Sang Hee Son, Jae Won Huh
Department of Pediatrics, Il Sin Christian Hospital, Busan, Korea
신생아 집중치료실에서 집단 발생한 Acinetobacter septicemia
김묘징, 이혜진, 손상희, 허재원
일신기독병원 소아과
Correspondence: 
Jae Won Huh, Email: iwhuh@pednet.co.kr
Abstract
Purpose
: Acinetobacter baumannii is increasingly recognized as an important cause of nosocomial infection, especially in neonatal intensive care units. But little is known about the clinical significance and hospital epidemiology of Acinetobacter species other than A. baumannii. The objective of this study is to describe the clinical characteristics and epidemiology of septicemia due to Acinetobacter species other than A. baumannii.
Methods
: We retrospectively reviewed 11 cases of blood culture proven nosocomial infection which occured in our neonatal intensive care unit from 4th to 24th, February, 2004. To establish epidemiological analysis, we performed environmental cultures and an antibiogram was obtained from susceptability tests of isolated Acinetobacter species.
Results
: Clinical manifestations including fever, poor feeding, abdominal distension, diarrhea, bloody stool passage, vomiting, tachypnea and apnea were similar to other infectious diseases. Benign clinical courses were compared with poor prognose, including a high mortality rate in septicemia due to A. baumannii. The major predisposing factor among our patients was the presence of a peripheral intravascular catheter. Antibiogram was similar, but surveillance cultures of environmental specimens failed to identify the source of infection.
Conclusion
: Acinetobacter species other than A. baumannii were often considered relatively avirulent bacteria, but could be pathologic organisms if cultured in patients with clinical symptoms.
Key Words: Acinetobacter , Disease outbreaks , Intensive care units , Neonatal


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