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KMID : 0605820120190030121
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Korean Journal of Pediatric Infectious Diseases
2012 Volume.19 No. 3 p.121 ~ p.130
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Etiology and Clinical Manifestations of Fever in Infants Younger than 3 Months Old: A Single Institution Study, 2008-2010
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Seok Joon-Young
Kang Ji-Eun
Cho Eun-Young
Choi Eun-Hwa
Lee Hoan-Jong
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Abstract
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Purpose : The purpose of this study is to investigate clinical features and causative organisms in febrile infants younger than three months, to help identification of high risk patients for serious bacterial infection (SBI).
Methods : A total of 313 febrile infants younger than three months, who had visited Seoul National University Children’s Hospital from January 2008 to December 2010 were included. Clinical features, laboratory findings, causative organisms, and risk factors of SBI were analyzed by retrospective chart review. Causative bacterial or viral pathogens were identified by gram stain and cultures, rapid antigen tests, or the polymerase chain reaction from clinically reliable sources.
Results : Among 313 infants, etiologic organisms were identified in 127 cases (40.6%). Among 39 cases of bacterial infections, Escherichia coli (66.7%) and Streptococcus agalactiae (12.8%) were common. Enterovirus (33.7%), respiratory syncytial virus (19.8%), and rhinovirus (18.8%) were frequently detected in 88 cases of viral infection. Patients with SBI (39 cases) showed significantly higher values of the white blood cell count (14,473±6,824/mm3 vs. 11,254±5,775/mm3, P =0.002) and the Creactive protein (6.32±8.51 mg/L vs. 1.28±2.35 mg/L, P <0.001) than those without SBI (274 cases). The clinical risk factors for SBI were the male (OR 3.7, 95% CI 1.5-8.9), the presence of neurologic symptoms (OR 4.8, 95% CI 1.4-16.8), and the absence of family members with respiratory symptoms (OR 3.6, 95% CI 1.2-11.3).
Conclusion : This study identified common pathogens and risk factors for SBI in febrile infants younger than three months. These findings may be useful to guide management of febrile young infants.
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KEYWORD
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Fever, Infant, Newborn, Bacterial infections, Sepsis
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