Data were collected from medical records, using a pre-established survey form, including the variables of the study: epidemiological data ( age, sex, profession, socio-economic level ), clinical data (antecedents and comorbidities, reason for hospitalization, temperature, source of infection), biological data (hemogram, CRP, thick gout, blood sugar, glycated hemoglobin, etc.), therapeutic data (anti-infectives, antidiabetics, analgesics ) and evolutionary data (duration of hospitalization, outcome of patients, cause of death). The gene discussed is CRP; the disease is infection.