helminth outline icons set - parasitic worms concept signs

helminth icon worm parasites ascarid trematodes fluke tapeworms nematodes roundworm pet pest disease flatworm human tick larvae parasitology pinworm coccidia medical sign infection element tapeworm symbol worms threadworm research digestive pathogen alimentary cestode nematoda life care infectious larva graphic ascariasis infecting dangerous microbiology biological parasitism set background vector logo line thi outline concept illustration