Scientists hunt for DNA signs that reveal dangerous staph infections

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: CASE Inclusion Criteria: Population 1: nosocomial bacteraemia associated with intravascular devices 1. Hospitalized patient with intravascular device (peripheral or central, venous or arterial, short or long duration) for at least 48 hours before the development of bacteraemia 2. Presenting a definite infection with S. epidermidis according to the categorization criteria, Sub-Population 1A: 3a) Aged less than 28 days (New-born) Sub-population 1B: 3b) Aged 28 days or more Population 2: nosocomial infections of implanted material 1. An operated patient carrying implanted equipment following orthopaedic surgery, following cardiac surgery or following neurosurgery, 2. Presenting a definite infection with S. epidermidis according to the categorization criteria occurring in the year following surgery CONTROL Inclusion Criteria: Population 1: carrier of intravascular devices 1. Hospitalized patient with intravascular device (peripheral or central, venous or arterial, short or long duration) for at least 48 hours before positive blood culture with S. epidermidis 2. Certain contamination with S. epidermidis according to the categorization criteria, Sub-Population 1A: 3a) Aged less than 28 days (Newborn) Sub-population 1B: 3b) Aged 28 days or more Population 2: carrier of implanted material 1. An operated patient carrying implanted equipment following orthopedic surgery, following cardiac surgery or following neurosurgery, 2. Presenting a certain contamination to S. epidermidis according to the categorization criteria occurring in the year following surgery Exclusion Criteria: CASE Exclusion Criteria Population 1: nosocomial bacteremia associated with intravascular devices 1. Opposition of the patient or the holders of parental authority (minor patients) 2. Patient with polymicrobial infection 3. Patient with a colonized catheter (positive catheter end culture \<103UFC / mL) with no clinical signs of local or general infection and with sterile peripheral blood cultures 4. Patient with local catheter infection (positive catheter end culture\> 103UFC / mL) with local inflammatory signs only and with sterile peripheral blood cultures Population 2: nosocomial infections of implanted material 1. Opposition of the patient or the holders of parental authority (minor patients) 2. Patient with an infection of material concomitant with a catheter-related infection CONTROL Exclusion Criteria Populations 1 and 2: Opposition of the patient or the holders of parental authority (minor patients)