Collection of Human Biological Samples for the Development and Validation of New Methods of Diagnosis and for the Realization of Expertises Diagnostics in the Field of Infectious Diseases and Tropical

Inclusion Criteria: * major subject * affiliated or benefiting from social security * having signed the information and consent form * negative HIV and HCV serology and negative HBV or vaccine serology (or old healed infection profile) * for cohort N: neuromeningeal infection during dianostic exploration Exclusion Criteria: * Volunteers with a severe or chronic pathology significantly disturbing one or more bio-clinical parameters and / or requiring the regular intake of certain drugs (anti-inflammatories or corticosteroids for example). * Woman whose pregnancy is known during the visit. * Acute infection within 15 days or taking antiviral, antibiotic, antifungal or antiparasitic drugs in the last 15 days. * Subject participating in a biomedical research or in a period of exclusion of a biomedical research. * When monitoring O +, AB +, A + and B + blood group whose erythrocyte base is kept for CEPIA research, in case of antimalarial (travel), a minimum of 5 half-lives after the last dose of antimalaria.