Missed opportunity to pre-exposure prophylaxis is a survey study that will be addressed to newly infected with human immunodeficiency virus (HIV) persons. The purposes of this study is to understand why despite the fact that pre-exposure prophylaxis exist, these persons have been contaminated with HIV.

Pre-exposure prophylaxis is a new strategy to prevent the occurrence of new cases of HIV. This prophylaxis strategy is based on taking antiretroviral drugs (ARV) before and after exposition to a risk of HIV infection which can reduce drastically the contamination with HIV. A certain groups of population based on their sexual orientation, for instance man who have sex with man (MSM), is among the groups that are highly exposed to this risk. To reduce this risk, French national regulatory authority (ANSM), firstly through temporary usage recommendation followed by a marketing authorization extension, allowed the prescription of these antiretroviral molecules to persons presenting eligibility criteria as defined by regulatory authority. Despite these preventive measures, the incidence of HIV such as the MSM group still high. The missed opportunity studies has as objectives to try to disentangle real obstacles of PrEP use in France and to optimize PrEP criteria if needed.

Inclusion Criteria:

• 18 years and older
• Understanding and speaking French
• Affiliated in or beneficiary of a Social Security (excluding State Medical Aid or AME that aren't considered as Social Security coverage)
• Men and women with a diagnosis of HIV infection known for less than three months and with recent HIV infection established on:

a diagnostic confirmation test by Western Blot (WB) or Immuno Blot showing incomplete pattern.

OR Previous HIV negative screening test performed within 6 months of diagnosis.

Exclusion Criteria:

• Less than 18 years old
• Unable to understand French
• Not affiliated to a social security coverage
• Under guardianship or under curatorship

We need to make a concertation with PI and scientists.