A 10 year old child from a rural area in the southeast porti…

A 10 year old child from a rural area in the southeast portion of the U.S. is experiencing abdominal pain and intestinal obstruction. The Ova & Parasite stool exam demonstrates an egg measuring approximately 55 x 45 um described as having a thick bile-staining mamillated outer layer. What is the most likely identification (M50-4, 10,11; Level 3)?

A patient traveling in North and Central Africa is bitten by…

A patient traveling in North and Central Africa is bitten by a sand fly.  The patient develops an infection at the site of the bite wound followed by extensive enlargement of the abdominal organs and intestines. A biopsy of the liver and kidneys shows organisms resembling a yeast-like cell within the macrophages. The most likely cause of this condition is: