Data collection for better patient characterization in a highly treatment experienced population. Studying the clinical practice for the treatment of HIV multiexperienced patients in the real life.

The research will be divided into two phases:

• The first phase intends to define and understand the clinical practice using a questionnaire about general topics: definitions of multiexperienced patients and VL failure, therapeutic strategies and behaviour in particular cases.
• The second part of the research will collect the clinical data of double PIs failure patients.

Inclusion Criteria:

Patients double PIs failure

Exclusion Criteria:

Not Applicable

HIV patients