Clinical Research Directory

1. Healthy group Inclusion Criteria : * Age from 0 to 17 years at the time of sampling (including premature infants) * Children coming to hospital for a blood sample to be taken as part of a pre-operative check-up, an allergy check-up or a check-up as part of a pathology other than sepsis. * Premature infants benefiting from a blood sample as part of their monitoring and management of prematurity * Collection of umbilical cord blood * Signed consent Exclusion Criteria : * Children with an infection * Children with fever * Children with an immune deficiency * Children with autoimmune disease * Children with metabolic disease * Children with haematological diseases * Children with a genetic disease * Unsigned consent * Refusal by parents or child 2. Septic group Inclusion Criteria : * Age from 0 to 17 years at the time of sampling (including preterm infants) * Children with suspected sepsis or diagnosed sepsis according to the 2016 definition * Premature infants having blood drawn for suspected or diagnosed sepsis * All responsible bacteria, viruses or fungi * Signed bio-collection consent Exclusion Criteria : * Children with an immune deficiency * Children with autoimmune disease * Children with a metabolic disease * Children with haematological diseases * Children with a genetic disease * Unsigned bio-collection consent * Refusal by parents or child