Objective: To determine the clinical-epidemiological characteristics of newborns with early-onset neonatal sepsis in a public hospital in Lima, Peru, 2016-2017. Materials and methods: An observational, retrospective study of 303 newborns born in Hospital Nacional Dos de Mayo, diagnosed with early-onset neonatal sepsis (2016-2017) and with complete medical records. Maternal variables: age, education, marital status, prenatal care, PROM, type of delivery, UTI, chorioamnionitis, anemia; neonatal variables: sex, gestational age, weight, Apgar, clinical signs, hemoculture, isolated organism, treatment, antibiotic sensitivity. Data processed in Excel and analyzed in SPSS Statistics V25. The incidence of early-onset neonatal sepsis was determined. Results: Incidence of early-onset neonatal sepsis: 67.08/1,000 (2016) and 127.85/1,000 (2017) live births. Incidence of confirmed early-onset neonata...