Parasite

A fit and active dance instructor is suddenly stopped in her tracks by unbearable abdominal pain and vomiting, and a mysterious mass in her colon is revealed to have decaying worms. A middle-aged banker gets seizures from a parasite he picked up from traveling to his home country, Haiti. A scientist finds worms from Africa that threaten to damage his sight living in his skin and eyes.

A nine-year-old hockey player comes down with encephalitis from the Acanthamoeba, which causes him to lose his concentration and balance, almost killing him. A computer programmer gets severe malaria from the Plasmodium parasite that makes him lose control of his mind and post-malarial neurological symptoms two weeks after an apparent recovery. A marathon runner deals with Leishmaniasis, which causes his spleen to swell.

The Crytosporidium parasite infects a little girl, causing her severe vomiting and diarrhea. A microscopic amoeba kills a firefighter with an autoimmune disorder by causing him meningitis. A rare, vicious tapeworm detaches the retina in a teenaged girl, destroying vision in her left eye.

A young college student gets a strange wound that slowly grows and oozes from Leishmaniasis after traveling to two countries from South America. An animal volunteer deals with a cat hookworm when a kitten scratches her on the chest. A couple deal with a strange rash that spreads on their bodies from a parasite they picked up after eating sushi in Africa.

A teenaged boy gets a maggot in his eye, making it impossible for him to see clearly. A construction worker deals with a tumor-like mass from a parasitic tapeworm that causes him severe pain in his pelvis and legs. A nine-year-old girl gets infected with the Giardia parasite, which gives her severe stomach cramps.

A peace volunteer deals with a leech in his nose, which gives him a strange nosebleed. A nature-loving landscaper gets a severe allergic reaction when he gets multiple bee stings at once and infects himself with the hookworm parasite to relieve his symptoms. A six-year-old girl gets a strange red spot on her foot from having a maggot in her foot.