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- W4386224906 abstract "Abstract Background The clinical diagnosis of neonatal sepsis remains difficult because of various challenges, such as culturing the bacteria and avoiding contamination. Therefore, this study aimed to identify bacterial pathogens in patients with clinically diagnosed neonatal sepsis by next-generation sequencing (NGS). Methods High-throughput NGS and traditional culture identification were performed by comparing samples from newborns with neonatal sepsis with healthy control infants. All blood samples were separately inoculated into anaerobic and aerobic bottles and incubated for 7 days at 37°C; the positive specimens were then identified. Novel bacteria identified through high-throughput NGS were analysed using polymerase chain reaction (PCR); PCR products were verified by Sanger sequencing. Wilcoxon rank-sum and chi-square tests were performed to assess the significance of differences in species abundance between groups. Subjects were clinically diagnosed and hospitalized at the Pediatrics Department of Yantian Hospital of the Southern University of Science and Technology and Pediatrics Department of the Longhua Branch of Shenzhen People’s Hospital. Experiments were performed at the Shenzhen Seventh People’s Hospital. The experimental group comprised 45 newborns clinically diagnosed with neonatal sepsis (age: 0–28 days; 28 males, 17 females). Fifteen normal newborns aged 0–28 days (7 males, 8 females) were included as the control group. Results High-throughput NGS showed a positivity rate of 44% (20/45) for bacteria in patients clinically diagnosed with neonatal sepsis, whereas traditional bacterial culture identification showed a positivity rate of 0% (0/45). The four main bacterial species identified were Anoxybacillus kestanbolensis , Geobacillus vulcani , Klebsiella oxytoca , and Acinetobacter guillouiae . Conclusions A. kestanbolensis , G. vulcani , K. oxytoca , and A. guillouiae , newly discovered bacteria in patients with neonatal sepsis, were identified with high-throughput NGS. Owing to a lack of methods to culture these bacteria, their role in neonatal sepsis remains unclear. A definite diagnosis cannot rely solely on bacterial culture identification for patients with a suspected diagnosis and clinical diagnosis of neonatal sepsis and should involve other effective diagnostic techniques." @default.
- W4386224906 created "2023-08-29" @default.
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- W4386224906 date "2023-08-28" @default.
- W4386224906 modified "2023-09-27" @default.
- W4386224906 title "Identification of novel bacterial species in the blood of patients with neonatal sepsis" @default.
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- W4386224906 doi "https://doi.org/10.21203/rs.3.rs-3208431/v1" @default.
- W4386224906 hasPublicationYear "2023" @default.
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