parasites under microscope and boy suffering from helminthiasis

abdominal anisakis ascariasis background banner body boy caucasian causes child childhood closeup design diarrhea disease duodenum endoparasite enterobiasis gut health helminth helminthiasis helminths home host human hygiene illustration infectious intestinal intestine invertebrate large located medical microscope pain parasites person sanitation science showing suffering system tapeworm threadworms trichina view worm