parasites under microscope and man suffering from helminthiasis

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