IBI Score to Improve Clinical Practice in Newborns and Infants ≤ 60 Days with Fever in the Emergency Department.

Fever is the most common problem of children admitted to emergency department (ED). The management of febrile patients ≤ 60 d old admitted to the Pediatric Emergency Department in the last 5 y was evaluated, applying the invasive bacterial infection (IBI) score proposed to evaluate the reliability and safety of this score in the authors' setting.Medical records of 280 patients with fever reported and/or detected in ED were retrospectively analyzed. A total of 166 patients were enrolled, whose average IBI score was 2.98 IBI score < 2 showed a sensitivity of 100.00% [95% CI (71.5-100.0)] and a specificity of 28.39% [95% CI (21.4-36.2)] compared to blood culture. IBI score can be a valid support to identify patients with low risk of invasive infection.