ascaris lumbricoides egg in stool exam

abdominal albendazole animal ascariasis ascaris background diarrhea disease duodenum education endoparasite female health healthy helminth host human hygiene infectious intestinal intestine invertebrate levamisole lumbricoides malnutrition mebendazole medical nature nematode nematodes pain pamoate parasite parasitic roundworm roundworms sanitation scary science swelling system tapeworm ugly white wildlife worm worms zoology