worms intestinal parasites icon on white background.

ache alimentary animal ascarid ascaris background biology black body design digestive disease flat flatworm heart helminth hookworm human icon illness illustration infection intestinal isolated logo medical medicine nematode parasite parasites parasitic parasitology pathogen pinworm schistosomiasis science sign silhouette simple small stomachache symbol tapeworm threadworm tract trematoda vector whipworm white worm