Primary immunodeficiency disorders (PID) or inborn errors of immunity : preliminary work West Africa Côte d’Ivoire

The immune system is a particularly sophisticated protection system. As a true guardian of our health, the immune system defends our body against external or internal aggressions. Sometimes, the immune system is not able to fight because it lacks or does not function properly causing an ineffective or absent immune response. Although more than 400 diseases exist, there is no data available in our country. We analyze through a retrospective study carried out in the pediatric department at Hospital University Center, in Abidjan, between February and April 2022, involving 93 PID suspect children, the epidemiological, clinical, paraclinical and therapeutic aspects. The average age of our patients was 2 years with extremes of 22 days to 15 years, with a male predominance: sex ratio of 1.45. The predominant geographical origin was Abidjan (85.32%). Consanguinity was found in 12.9%, death in siblings was found in 3.49% of patients. The most common clinical manifestations were repeated respiratory infections (60.71%), fever (16%), severe infections at least twice a year (13.04%), persistent fungal infections (12.90), thrive retardation in 48.7%. Abnormalities such as hyperleukocytosis (42.4%), neutropenia (29.23%), lymphopenia (16.44%), thrombocytopenia (38.36%) and mostly anemia (62.36%) were noted. Phagocytosis deficiency combined immune deficiencies and humoral deficiencies were respectively found at 95.16%, 89.78%.79.03%. This work draws attention to the importance of PID which are often underdiagnosed, with absent or delayed treatment and poor prognosis. It is important to build a cohort with confirmed data to better support children with PID in our country. no support