The infective larvae of Strongyloides stercoralis penetrates…

The infective larvae of Strongyloides stercoralis penetrates the skin and migrates through the circulatory system to the heart and lungs. The organism enters the bronchial tree and is then swallowed, entering the digestive tract, where the organism matures into an adult worm. The common name of this parasite is the:

A 21 yr old female who emigrated from Mexico 3 yrs ago had a…

A 21 yr old female who emigrated from Mexico 3 yrs ago had a seizure.  Previous to this seizure, the female was described as being in generally good health.  A neurological exam demonstrated no focal findings but, upon a CT scan of the head, numerous cysts were noted.  The CSF demonstrated an increased lymphocytes count, a glucose level of 63 mg/dl, and a protein level of 36 mg/dL.  Which of the following is the most likely causative agent?