A 46-year-old man is brought to the emergency department due to a generalized tonic-clonic seizure. The patient has no chronic medical
problems and, prior to today, had never had a seizure. He does not use tobacco, alcohol, or illicit drugs. The patient is a Christian missionary and
recently spent 3 months with rural Bolivian pig farmers. Temperature is 36.8 C (98.2 F), blood pressure is 120/70 mm Hg, and pulse is 86/min.
The patient is drowsy and postictal. Electroencephalogra m shows epileptiform activity. MRI of the brain demonstrates several intraparenchymal,
5 -to 10-mm cystic lesions with surrounding edema. There is no mass effect or midline shift. A rapid HIV test is negative. Which of the following
is the most likely cause of this patient’s current condition?
- Q A. Abnormal protein in an infected animal brain
- Q 8. Infectious oocysts in feline feces
- Q C . Neurotropic virus acquired from an infected animal bite
- Q D. Parasite eggs in contaminated food or water
- Q E. Sporozoite inoculation from a mosquito bite
- Q F. Nasal mucosal penetration by fresh-water amoebas