parasites under microscope and woman suffering from helminthiasis, closeup

abdominal adult anal ascariasis background banner body causes closeup design diarrhea discomfort disease duodenum endoparasite enterobiasis female gut health helminth helminthiasis helminths home host human hygiene illustration infectious intestinal intestine invertebrate large medical microscope pain parasites person sanitation science suffering system tapeworm threadworms trichina woman worm young