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    Illustration of small tick biting human skin. — Stock Photo
    Illustration of small tick biting human skin.
    Group of cysts of Giardia intestinalis protozoans flagellated parasites in small intestine, digital illustration. — Stock Photo
    Group of cysts of Giardia intestinalis protozoans flagellated parasites in small intestine, digital illustration.
    Parasitic adult Ticks — Stock Photo
    Parasitic adult Ticks
    Micrograph of house fly — Stock Photo
    Micrograph of house fly
    Round worms in human intestine, computer illustration. Roundworms, or nematodes, include numerous free-living and pathogenic species — Stock Photo
    Round worms in human intestine, computer illustration. Roundworms, or nematodes, include numerous free-living and pathogenic species
    Parasitic Cylindromyia fly on a dried wild flower head. — Stock Photo
    Parasitic Cylindromyia fly on a dried wild flower head.
    Entamoeba histolytica engulfing red blood cells — Stock Photo
    Entamoeba histolytica engulfing red blood cells
    Group of Trichomonas hominis protozoan parasites, digital illustration. — Stock Photo
    Group of Trichomonas hominis protozoan parasites, digital illustration.
    Digital illustration of trypanosome parasite which causing Chagas disease. — Stock Photo
    Digital illustration of trypanosome parasite which causing Chagas disease.
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Group of Trichomonas hominis protozoan parasites, digital illustration. — Stock Photo
    Group of Trichomonas hominis protozoan parasites, digital illustration.
    Toilet microbes on contaminated seat surface in water closet, conceptual digital illustration. — Stock Photo
    Toilet microbes on contaminated seat surface in water closet, conceptual digital illustration.
    Close-up of entomopathogenic fungus infection on tiger fly on wild plant leaf. — Stock Photo
    Close-up of entomopathogenic fungus infection on tiger fly on wild plant leaf.
    Toilet microbes on contaminated seat surface, conceptual digital illustration. — Stock Photo
    Toilet microbes on contaminated seat surface, conceptual digital illustration.
    Toxoplasma gondii in blood, digital illustration. — Stock Photo
    Toxoplasma gondii in blood, digital illustration.
    Digital illustration of trypanosome parasite in blood causing Chagas disease. — Stock Photo
    Digital illustration of trypanosome parasite in blood causing Chagas disease.
    Transplacental transmission of Toxoplasma gondii parasites to human embryo, conceptual illustration. — Stock Photo
    Transplacental transmission of Toxoplasma gondii parasites to human embryo, conceptual illustration.
    Adult Pubic louse on hair — Stock Photo
    Adult Pubic louse on hair
    Giardia lamblia, a protozoan (cyst stage) found in water contaminated by animal faeces, coloured scanning electron micrograph (SEM). — Stock Photo
    Giardia lamblia, a protozoan (cyst stage) found in water contaminated by animal faeces, coloured scanning electron micrograph (SEM).
    3d rendered colored illustration of tick on skin surface. — Stock Photo
    3d rendered colored illustration of tick on skin surface.
    Scabies mite or Sarcoptes scabei — Stock Photo
    Scabies mite or Sarcoptes scabei
    Round worms in human intestine, computer illustration. Roundworms, or nematodes, include numerous free-living and pathogenic species — Stock Photo
    Round worms in human intestine, computer illustration. Roundworms, or nematodes, include numerous free-living and pathogenic species
    Palo verde tree infested with desert mistletoe, Arizona, United States — Stock Photo
    Palo verde tree infested with desert mistletoe, Arizona, United States
    Illustration of ascariasis worm on black background. — Stock Photo
    Illustration of ascariasis worm on black background.
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Babesia parasites inside red blood cell, computer illustration — Stock Photo
    Babesia parasites inside red blood cell, computer illustration
    Blood cells and Plasmodium sp. parasites (at schizont stage) causing malaria, computer illustration. — Stock Photo
    Blood cells and Plasmodium sp. parasites (at schizont stage) causing malaria, computer illustration.
    Digital illustration showing close-up of ciliate protozoan Balantidium coli intestinal parasite causing balantidiasis ulcer in human intestinal tract. — Stock Photo
    Digital illustration showing close-up of ciliate protozoan Balantidium coli intestinal parasite causing balantidiasis ulcer in human intestinal tract.
    Enterobius vermicularis threadworm eggs containing worm larvae, causative agent of enterobiasis, computer illustration. — Stock Photo
    Enterobius vermicularis threadworm eggs containing worm larvae, causative agent of enterobiasis, computer illustration.
    Oral trichomonas parasites, digital illustration. — Stock Photo
    Oral trichomonas parasites, digital illustration.
    Digital illustration of trypanosome parasite in blood causing Chagas disease. — Stock Photo
    Digital illustration of trypanosome parasite in blood causing Chagas disease.
    Parasites attacking spermatozoons fertilizing egg cell. — Stock Photo
    Parasites attacking spermatozoons fertilizing egg cell.
    Lymph node with filaria nematode worms, digital illustration — Stock Photo
    Lymph node with filaria nematode worms, digital illustration
    Colored illustration of mosquito pest on skin. — Stock Photo
    Colored illustration of mosquito pest on skin.
    Pentatrichomonas hominis protozoan in human large intestine, digital illustration. — Stock Photo
    Pentatrichomonas hominis protozoan in human large intestine, digital illustration.
    Babesia parasites inside red blood cell, computer illustration — Stock Photo
    Babesia parasites inside red blood cell, computer illustration
    Digital illustration of ciliate protozoan Balantidium coli intestinal parasite causing ulcer in intestinal tract. — Stock Photo
    Digital illustration of ciliate protozoan Balantidium coli intestinal parasite causing ulcer in intestinal tract.
    Toilet microbes on contaminated seat surface, conceptual digital illustration. — Stock Photo
    Toilet microbes on contaminated seat surface, conceptual digital illustration.
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Close-up of parasitic amoeba in human intestine, digital artwork. — Stock Photo
    Close-up of parasitic amoeba in human intestine, digital artwork.
    Digital illustration of trypanosome parasite in blood causing Chagas disease. — Stock Photo
    Digital illustration of trypanosome parasite in blood causing Chagas disease.
    3D illustration of blastocystis hominis parasite, causative agent of diarrheal infection. — Stock Photo
    3D illustration of blastocystis hominis parasite, causative agent of diarrheal infection.
    Head louse on human hair — Stock Photo
    Head louse on human hair
    Egg of a parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Egg of a parasitic worm Trichuris trichiura, computer illustration
    Illustration of schistosoma blood fluke flatworm on black background. — Stock Photo
    Illustration of schistosoma blood fluke flatworm on black background.
    Lyme disease tick and close-up of Borrelia burgdorferi bacteria, digital illustration. — Stock Photo
    Lyme disease tick and close-up of Borrelia burgdorferi bacteria, digital illustration.
    Human embryo and close-up of Toxoplasma gondii parasites, conceptual illustration. — Stock Photo
    Human embryo and close-up of Toxoplasma gondii parasites, conceptual illustration.
    Closeup of Amoeba, computer illustration — Stock Photo
    Closeup of Amoeba, computer illustration
    Digital illustration of trypanosome parasites in blood which causing Chagas disease. — Stock Photo
    Digital illustration of trypanosome parasites in blood which causing Chagas disease.
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Illustration of tick parasite crawling on human skin surface. — Stock Photo
    Illustration of tick parasite crawling on human skin surface.
    Cat flea head — Stock Photo
    Cat flea head
    Trichomonas vaginalis parasitic microorganism causing trichomoniasis, digital illustration. — Stock Photo
    Trichomonas vaginalis parasitic microorganism causing trichomoniasis, digital illustration.
    Illustration of small tick biting human skin. — Stock Photo
    Illustration of small tick biting human skin.
    Head louse on white background, digital illustration. — Stock Photo
    Head louse on white background, digital illustration.
    Illustration of female reproductive system and parasitic Trichomonas vaginalis causing trichomoniasis. — Stock Photo
    Illustration of female reproductive system and parasitic Trichomonas vaginalis causing trichomoniasis.
    Entamoeba gingivalis parasitic pathogen single-celled protozoans, amoebas in oral cavity, digital illustration. — Stock Photo
    Entamoeba gingivalis parasitic pathogen single-celled protozoans, amoebas in oral cavity, digital illustration.
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Illustration of giardia parasites on blue background. — Stock Photo
    Illustration of giardia parasites on blue background.
    Adult female mosquito — Stock Photo
    Adult female mosquito