[Eosinophilia in migrant patients : what are the strategies?]

Among refugees, asylum seekers, or people coming from tropical regions, eosinophilia (>0.5 G/L) is often a sign of parasitic infection, even in the absence of symptoms. The most frequently encountered are helminthiasis such as strongyloidiasis, ancylostomiasis, and schistosomiasis. Management should ideally include screening by three repeated stool analysis and serology. However, collection and storage of stool samples is often difficult in collective accommodation centers. A pragmatic and simplified approach is therefore preferable. Antiparasitic treatment, whether specific or empiric, resolves eosinophilia in most cases. A decision algorithm can guide management, but in doubtful or complex cases, it is advisable to consult a specialist in tropical medicine to further refine the diagnosis and treatment.