Evaluate the following life cycle.    Eggs mature in water à miracidium (1st stage larva) ingested by snail while in egg or penetrates snail if released from egg à sporocysts develop à rediae develop in sporocyst à cercaria develops within redia and is released into water à cercaria attaches to aquatic vegetation (now metacercaria) à human ingests metacercaria à travels to liver in human   This depicts the life cycle of which organism?

Which of the following organisms is spread via a bite of the tsetse fly and causes East African sleeping sickness?

The term “hydatid sand” is used in reference to which of the following tapeworms?

A fibrous skin nodule is removed from the back of a patient from Central America.  A microfilaria seen upon microscopic examination of the nodule would be:

Indicate the appropriate order of the events in the life cycle of Leishmania spp.  Start with the step that takes place after the vector bites the human and regurgitates the promastigotes.

____________________ is the diagnostic method most useful in detection of extra-intestinal infections with Entamoeba histolytica.

A fibrous skin nodule is removed from the back of a patient from Central America.  A microfilaria seen upon microscopic examination of the nodule would be:

A 22-year-old male presents to his family physician complaining of fatigue, muscle pain, periorbital edema, and fever.  He denies travel outside the US.  The physician suspects infectious mononucleosis (IM); however, the serologic tests for IM are negative.  The complete blood count revealed a slightly elevated white blood cell count, and there was an increase of eosinophils on the differential.  Which of the following should be considered as a possible cause for the patient’s symptoms?

A formed stool is received in the laboratory at 3 am for ova and parasite exam.  Randy is working night shift and is certain that the workload will prevent examination of the specimen until 6 am when the next shift arrives.  Randy should:

Patients may acquire concurrent infection with Babesia microti and _______________________ because these organisms are transferred by the same arthropod vector.