Inclusion Criteria:  Patients over 15 years of age, for minor patients signature of both parents or parent authority representative Unknown HIV (questionnaire) Non-immunocompromised (questionnaire) Known serological status with toxoplasmosis Social Security Affiliate Informed Consent Signature  Exclusion Criteria:  Presence of known immunosuppression or immunosuppressive therapy (questionnaire). HIV-positive people will be excluded due to the immunosuppressive action of HIV