Several questions remain to be answered related to imported strongyloidiasis. How common is strongyloidiasis linked to travel? What countries are the main sources of infection? Should travelers and immigrants be tested routinely for strongyloidiasis? The main objective of this study was to assess the epidemiological, laboratory, and clinical features of imported strongyloidiasis in a tropical medicine referral unit in Madrid. Other goals were to describe the diagnosis method and to evaluate the differences between two groups: immunocompetent and immunosuppressed patients.