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A female presents with vaginal itching and UTI symptoms.  A urine culture was ordered as well as a wet prep of the vaginal fluid. The tech noticed quick darting, jerky motility on the wet prep.  What is the most likely identification?

During a very hot summer, a teenager went swimming and picnicking at a very small, shallow lake.  Later that evening, the teenager started to feel sick and complained of a headache and general malaise. The next morning, the teenager became very ill and was rushed to the emergency department. Many neurologic changes were noted. Despite the staff’s best efforts, the teenager died.  An autopsy revealed the presence of small protozoans in her brain tissue. What is the most probable organism that caused her death?

A beta-lactamase inhibitor (M10, 12-4, 5; Level 2):

Schistosoma japonicum may be found in the venules surrounding:

The examination of human feces is of least use in the detection of (M54-5, 10; Level 2):

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)?

The following are the chronological life-cycle stages of the intestinal trematodes beginning with the passage of eggs from the body via feces (M55-5, 10; Level 2):

What disease manifests in acute cases as a severe gastroenteritis, accompanied by vomiting followed by diarrhetic stools that are described as rice water and occur 10 to 30 times a day?

A patient who recently traveled to Central America presents to the emergency room with fever and chills occurring every third day.  A thick and thin prep of the patient’s blood is prepared and stained as malaria is suspected.  Inclusions seen in the patient’s RBC’s are described as blue disks with red nuclei.  The infected erythrocytes are generally enlarged and some of them having reddish granules.  Some of the RBC’s appear to have >15 merozoites in a single cell.  Identify the parasite described:

A young man from rural Brazil is visiting family in the United States when he becomes ill with muscle pains, high fever, and hepatosplenomegaly.  A blood sample taken in the emergency room reveals the following organism. The most likely identification of this organism is: