Human, canine and feline strongyloidiasis: beyond Strongyloides stercoralis.

Strongyloides stercoralis has historically dominated research and control efforts for strongyloidiasis in both medical and veterinary fields. This has obscured the significance of other Strongyloides species infecting humans and their closest companions, dogs (Canis lupus familiaris) and cats (Felis catus). This review synthesized clinical and epidemiologic evidence on these neglected agents of human and companion animal strongyloidiasis and outlined priorities for future research. Our aim is to raise awareness of these understudied species and promote research to clarify their medical and veterinary public health significance. Targeted species-specific surveillance using molecular-genomic and advanced morphological tools is essential to uncover the true burden of these infections and inform strategies for their control and eventual elimination.