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  • Title: Etiology, Antibiotic Resistance and Risk Factors for Neonatal Sepsis in a Large Referral Center in Zambia.
    Author: Kabwe M, Tembo J, Chilukutu L, Chilufya M, Ngulube F, Lukwesa C, Kapasa M, Enne V, Wexner H, Mwananyanda L, Hamer DH, Sinyangwe S, Ahmed Y, Klein N, Maeurer M, Zumla A, Bates M.
    Journal: Pediatr Infect Dis J; 2016 Jul; 35(7):e191-8. PubMed ID: 27031259.
    Abstract:
    BACKGROUND: In sub-Saharan Africa, there is scanty data on the causes of neonatal sepsis and antimicrobial resistance among common invasive pathogens that might guide policy and practice. METHODS: A cross-sectional observational prevalence and etiology study of neonates with suspected sepsis admitted to the neonatal intensive care unit, University Teaching Hospital, Lusaka, Zambia, between October 2013 and May 2014. Data from blood cultures and phenotypic antibiotic susceptibility testing were compared with multivariate analysis of risk factors for neonatal sepsis. RESULTS: Of 313 neonates with suspected sepsis, 54% (170/313) were male; 20% (62/313) were born to HIV-positive mothers; 33% (103/313) had positive blood cultures, of which 85% (88/103) were early-onset sepsis. Klebsiella species was the most prevalent isolate, accounting for 75% (77/103) of cases, followed by coagulase-negative staphylococci [6% (7/103)], Staphylococcus aureus [6% (6/103)], Escherichia coli [5% (5/103)] and Candida species [5% (5/103)]. For Klebsiella species, antibiotic resistance ranged from 96%-99% for World Health Organization-recommended first-line therapy (gentamicin and ampicillin/penicillin) to 94%-97% for third-generation cephalosporins. The prevalence of culture-confirmed sepsis increased from 0 to 39% during the period December 2013 to March 2014, during which time mortality increased 29%-47%; 93% (14/15) of late-onset sepsis and 82% (37/45) of early-onset sepsis aged 4-7 days were admitted >2 days before the onset of symptoms. Culture results for only 25% (26/103) of cases were available before discharge or death. Maternal HIV infection was associated with a reduced risk of neonatal sepsis [odds ratio, 0.46 (0.23-0.93); P = 0.029]. CONCLUSIONS: Outbreaks of nosocomial multiantibiotic-resistant infections are an important cause of neonatal sepsis and associated mortality. Reduced risk of neonatal sepsis associated with maternal HIV infection is counterintuitive and requires further investigation.
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