IL15 and Nematoda infectious disease: The pathways including WNT/β-catenin signaling, Th1 and Th2 activation, RAR activation, NGF-stimulated transcription, IL-15 production, and IL-4, 7, 12, and 13 signaling are the top pathways that the nematode infection elicits, which could lead to eventual protection or immune evasion.