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BACKGROUND Preterm and low birth weight (birth weight &lt;2500 g) neonates are vulnerable to sepsis, and the causative pathogens vary in different regions and times. The objective of this study was to identify common organisms leading to neonatal sepsis and identify the characteristic of patients infected with different bacteria, which may help in the selection of antibiotics for empirical treatment. MATERIAL AND METHODS We retrospectively collected the clinical and microbiological data of neonates with culture-proven sepsis in our clinical setting from June 2011 to June 2017. The demography, composition, and distribution of the pathogens and the clinical characteristic of the cases infected with different bacteria were analyzed. RESULTS Of a total of 1048 bacteria that were isolated from patient samples, detailed clinical and microbiological data of 297 cases were available. Escherichia coli, Klebsiella pneumoniae, and coagulase-negative Staphylococcus (co-NS) were the top 3 isolated pathogens. Streptococcus agalactiae predominantly led to early-onset sepsis, while K. pneumoniae and Staphylococcus aureus mainly led to late-onset sepsis. K. pneumoniae was mainly acquired in the hospital. Leukopenia was more commonly seen than leukocytosis in our study, and patients infected with K. pneumoniae and Candida spp encountered more thrombocytopenia. CONCLUSIONS The results of our study revealed the composition of the pathogens of neonatal sepsis in our region and the clinical characteristic of sepsis caused by different bacteria; these data may help in the selection of antibiotics for empirical treatment of neonates with high risk of sepsis.

Clinical Characteristic and Pathogen Spectrum of Neonatal Sepsis in Guangzhou City from June 2011 to June 2017