surveillance (3) anticorps (3) infection (3) test immunologique (3) ligne (3) Methods (3) Patients (3) Infection (3) Immunoassay (3) Algorithms (3) Methods (3) Patients (3) Infections (3) temps (durée) (2) test (2) information (2) analyse (2) HIV infections (2) Time (2) Proportion (2) Months (2) Human beings (2) Examinations (2) Evaluation (2) Confirmation (2) Confidence (2) Use (2) lit (2) puits (1) norme (1)