Blog

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:

Small gray non-hemolytic colonies from an animal bite grew on BAP and CHOC but failed to grow on MAC or EMB.  The organism is catalase, oxidase, and indole positive. The organism ferments sugars slowly. The most likely organism is (M29-1; Level 3):

The eggs of the blood fluke Schistosoma haematobium range from 110 to 170 microns long by 40 to 70 microns wide and have a sharp, pointed terminal spine. In which specimen is this organism most likely found (M57-4, 10; Level 2)?

Genetic resistance to Plasmodium vivax is related to: