helminths heart outline colorful banner. concept

helminth helminths icon worm banner heart shaped love parasites tapeworms roundworms nematode echinococcus infestation flatworm parasitic larvae protozoa pinworm medicine sign infection element tapeworm symbol worms tract digestive pinworms contaminant cestoda stomachache symptom gastrointestinal microflora background vector line thin linear outline concept illustration colored dark purple