Helminths

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Group Species Common Name Exposure Treatment
Platyhelminths: trematodes (flukes)
lung flukes Paragonimus species lung fluke praziquantel
liver flukes Fasciola hepatica common or sheep liver fluke triclabendazole
Opisthorchis viverrini Southeast Asian liver fluke praziquantel or albendazole
Clonorchis sinensis Chinese liver fluke praziquantel or albendazole
Metorchis conjunctus Canadian liver fluke praziquantel
Dicrocoelium dendriticum lancet liver fluke
intestinal flukes Echinostoma revolutum
Fasciolopsis buskii praziquantel
Metagonimus species praziquantel
Heterophyes heterophyes eating undercooked fresh/brackish water fish in Egypt and Middle and Far East praziquantel
blood flukes Schistosoma haematobium blood fluke praziquantel
Schistosoma mansoni blood fluke praziquantel
Platyhelminths: cestodes (tapeworms)
pseudophyllideans Diphyllobothrium latum praziquantel
Spirometra species
Sparganum species
intestinal cyclophyllideans Taenia solium pork tapeworm eating undercooked pork
Taenia saginata beef tapeworm eating undercooked beef
Hymenolepis nana dwarf tapeworm praziquantel
Hymenolepis diminuta
Dipylidium caninum
tissue cyclophyllideans Echinococcus granulosus hydatid worm albendazole
Echinococcus multilocularis alveolar hydatid disease albendazole
Taenia solium cysticercosis eating soil contaminated with pig or human feces albendazole or praziquantel
Taenia multiceps
Taenia serialis
Nematodes (roundworms)
filarial roundworms Onchocerca volvulus river blindness ivermectin
Loa loa eye worm diethylcarbamazine
Wuchereria bancrofti lymphatic filariasis diethylcarbamazine
Brugia malayi lymphatic filariasis diethylcarbamazine
Brugia timori lymphatic filariasis diethylcarbamazine
Mansonella perstans maybe doxycycline
Mansonella streptocerca maybe doxycycline
Mansonella ozzardi maybe doxycycline
intestinal roundworms Ascaris lumbricoides great roundworm albendazole or mebendazole or ivermectin
Necator americanus New World hookworm albendazole or mebendazole or pyrantel pamoate
Ancylostoma duodenale Old World hookworm albendazole or mebendazole or pyrantel pamoate
Strongyloides stercoralis threadworm immunosuppression in a person who has ever spent time on a tropical beach ivermectin ± albendazole
Trichuris trichiura whipworm albendazole
Enterobius vermicularis pinworm albendazole or mebendazole or pyrantel pamoate
Capillaria species mebendazole
Trichostrongylus species pyrantel pamoate
Anisakis species anisakidosis endoscopic removal
Gongylonema species gullet worm ingestion of food or water contaminated by sheep or pig feves surgical removal or albendazole
tissue-invasive roundworms Trichinella spiralis pork worm eating undercooked pig, boar, or bear meat albendazole plus steroids
Anyclostoma braziliense cutaneous larva migrans albendazole or ivermectin
Ancylostoma caninum eosinophilic enterocolitis albendazole or mebendazole or endoscopic removal
Dracunculus medinensis Guinea worm none
Toxocara canis visceral larva migrans albendazole or mebendazole
Toxocara cati visceral larva migrans albendazole or mebendazole
Angiostrongylus cantonensis rat lungworm controversial
Gnathostoma species albendazole or ivermectin ± surgical removal
Baylisascaris procyonis raccoon roundworm albendazole + steroids
Dioctophyme renale giant kidney worm

Investigations

  • Eosinophilia seen in tissue-invasive worms, not in those that live in the gut or in cystic structures