A toddler who is started eating cat food is diagnosed with toxacara. A man suffers complications from diverticulitis when ESBL E. coli escape through his perforated colon. A New Mexico man is infected with bubonic plague.

A young boy's nose is invaded by a bacterium after swimming in a lake; A model's breast implant become infected with aspergillus niger; A young woman's lungs are infected with a fungus.

A traveler to South America picks up a case of cutaneous leishmaniasis; A man contracts rat bite fever from his pet rat; A young boy with valley fever.

A pregnant woman goes into a coma when she is infected with acinetobacter baumannii; A young woman has roundworms living in her lungs; A 15-year-old girl suffering for weeks from headaches is later found to have had rabies.

An infant sufferers sever throat damage after swallowing a button battery; A young woman's brain has been infected with strep virus; A woman picks up dengue fever on a vacation.

A toddler is infected with meningococcal disease caused by a bacterium; After surgery for an abdominal tumor, doctors accidentally leave a 13-inch retractor inside a patient; A seven-year-old boy is infected with a brain amoeba.

A young art student has a clogged jugular vein causing Lemierre's syndrome; A young woman suffers from Lyme disease and babesiosis; A woman has recurring infections after a sponge is left behind from a previous biopsy.