The Moroccan Society for Immunodeficiency organized for the first time a cursus in 5 modules on Basic Immunology supporting clinical features in PID. The first module was animated by Dr Babacar Mbengue (Senegal) who presented the immune system and the infectious response, Pr Jalila El Bakkouri who presented humoral-mediated immunity and Pr Ahmed Aziz Bousfiha who presented clinical features of predominantly antibody deficiencies.