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  • Title: Epidemiology of community-acquired bacteremia among infants in a medical center in Taiwan, 2002-2011.
    Author: Ting YT, Lu CY, Shao PL, Lee PI, Chen JM, Hsueh PR, Huang LM, Chang LY.
    Journal: J Microbiol Immunol Infect; 2015 Aug; 48(4):413-8. PubMed ID: 24291617.
    Abstract:
    OBJECTIVE: To investigate the etiologies and antibiotic susceptibility of community-acquired bacteremia in infants in a medical center in northern Taiwan. METHODS: We conducted a retrospective analysis of all blood cultures from infants in the National Taiwan University Hospital from 2002 to 2011 to find community-acquired bacteremia. Common pathogens, antibiotic resistance, and outcome were analyzed. RESULTS: During the study period, 25,628 blood cultures were collected, and 3.4% of the cultures were positive, of which 15.9% were categorized as community-acquired bacteremia. In the age group of 0-6-days, the leading causative organisms were group B streptococcus (41.7%) and Escherichia coli (30.6%). In the 7-90-days and 4-6-months groups, the most common pathogens were E. coli (44.1%, 45.5%, respectively) and group B streptococcus (32.4%, 13.6%, respectively). For infants aged 7-12 months, the most common pathogens were Salmonella species (51.1%) and E. coli (12.8%). The overall mortality rate of community-acquired bacteremia was 6%. Urinary tract infection was the concomitant diagnosis among 52.4% of infants with E. coli bacteremia. Meningitis was found in 33.3% of infants with group B streptococcus bacteremia. Listeria monocytogenes bacteremia was identified in three infants, one of whom had meningitis. Penicillin resistance was found in 4% of group B streptococcus and ampicillin resistance in 71% of E. coli. CONCLUSION: Our study provides updated etiological data on community-acquired bacteremia in infants in northern Taiwan. Group B streptococcus and E. coli remained the leading pathogens in infants aged 6 months or younger and Salmonella species for those older than 6 months.
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