Hubert-Dibon G, et al. - A prospective cohort study was conducted to assess the epidemiology and performance of biomarkers for identifying bacterial infections in children who presented with fever without source in the Paediatric Department at the University Hospital of Nantes, France, in 2016. For this research, children older than six days and younger than five years of age were involved. The data presented in this work showed a low prevalence of invasive bacterial infections in children who presented with fever without source. The findings suggested that procalcitonin and C-reactive protein could help to detect invasive bacterial infections in children who had fever without source.