NAVLE PARASITOLOGY EXAM |ACTUAL
QUESTIONS AND VERIFIED ANSWERS|BRAND NEW
2026-2027 UPDATE|GRADED A+
Which of the following animals would be most likely to serve as a source of Trichinella spp.
infection to humans in the U.S.?
A) Rabbit
B) Sheep
C) Cattle
D) Bear
E) Deer
CORRECT ANSWER
Bear
This parasite ova was found on fecal flotation of a 5-year-old dog with a history of
intermittent bloody diarrhea. Which of the following is the most appropriate labeled
pharmacotherapy?
A) Pyrantel
B) Ivermectin
C) Metronidazole
D) Trimethoprim-sulfa
E) Fenbendazole
CORRECT ANSWER
Fenbendazole
1
@THE STUDY VAULT
, Whipworm
An egg (ova) of Pearsonema plica was detected on urine sediment examination of a 4-year-
old neutered male mixed-breed dog with a history of cystitis. How did the dog become
infected with this parasite?
A) Skin penetration of third-stage larvae
B) Ingestion of earthworm containing third-stage larvae
C) Ingestion of egg containing first-stage larvae
D) Migration of third-stage larvae up urethra to embed in urinary bladder mucosa
E) Ingestion of dung beetle containing third-stage larvae
CORRECT ANSWER
B) Ingestion of earthworm containing third-stage larvae
To combat Texas cattle fever caused by Babesia bigemina, the vector tick, Boophilus
annulatus, was eradicated from the United States through an ambitious program of intensive
dipping of cattle. What aspect of the life cycle of this tick allowed the eradication program to
be successful?
Boophilus annulatus is a one-host tick
Boophilus annulatus prefers to feed on animals other than cattle
Boophilus annulatus is a three-host tick
Boophilus annulatus has low tolerance for conditions of high humidity
Boophilus annulatus has a low tolerance for high temperatures
CORRECT ANSWER
Boophilus annulatus is a one-host tick
2
@THE STUDY VAULT
,A 5-year-old gelding presents with ataxia and incoordination in all four limbs. A CSF tap
reveals antibodies to Sarcocystis neurona. How did the horse most likely acquire this
infection?
Transmission of sporozoites via the bite of a tabanid fly
Ingestion of oocysts from the feces of an infected horse
Ingestion of sarcocysts in the muscle tissue of an infected opossum
Transmission of sporozoites via tick bite
Ingestion of sporocysts from opossum feces in contaminated feed or water
CORRECT ANSWER
Ingestion of sporocysts from opossum feces in contaminated feed or water
This parasite was detected on fecal flotation of a 3-month-old puppy with acute diarrhea.
Although many dogs will self-cure this parasite, you decide to prescribe a treatment. What
treatment is most appropriate?
A) Sulfadimethoxine
B) Fenbendazole
C) Ivermectin
D) Metronidazole
E) Pyrantel
CORRECT ANSWER
3
@THE STUDY VAULT
, Sulfadimethoxine
Coccidia
An adult budgie presents with severe crusting on the beak and cere which has resulted in
severe deformity of the beak. What diagnostic assay is most likely to reveal the etiologic
agent?
A) Serum chemistry profile
B) Bacterial culture of the crusted material for the presence of Staphylococcus
C) Microscopic examination of the crusted material for mites
D) Radiographs to evaluate calcium deposition in the long bones
E) Virus isolation attempts on the crusted material
CORRECT ANSWER
Microscopic examination of the crusted material for mites
Knemidocoptes "scaly leg and face mite"
West Nile virus is commonly transmitted to horses, people, and other animals via:
A) Fleas
B) Mosquitoes
C) Horse flies
D) Ticks
E) Biting midges
CORRECT ANSWER
4
@THE STUDY VAULT
QUESTIONS AND VERIFIED ANSWERS|BRAND NEW
2026-2027 UPDATE|GRADED A+
Which of the following animals would be most likely to serve as a source of Trichinella spp.
infection to humans in the U.S.?
A) Rabbit
B) Sheep
C) Cattle
D) Bear
E) Deer
CORRECT ANSWER
Bear
This parasite ova was found on fecal flotation of a 5-year-old dog with a history of
intermittent bloody diarrhea. Which of the following is the most appropriate labeled
pharmacotherapy?
A) Pyrantel
B) Ivermectin
C) Metronidazole
D) Trimethoprim-sulfa
E) Fenbendazole
CORRECT ANSWER
Fenbendazole
1
@THE STUDY VAULT
, Whipworm
An egg (ova) of Pearsonema plica was detected on urine sediment examination of a 4-year-
old neutered male mixed-breed dog with a history of cystitis. How did the dog become
infected with this parasite?
A) Skin penetration of third-stage larvae
B) Ingestion of earthworm containing third-stage larvae
C) Ingestion of egg containing first-stage larvae
D) Migration of third-stage larvae up urethra to embed in urinary bladder mucosa
E) Ingestion of dung beetle containing third-stage larvae
CORRECT ANSWER
B) Ingestion of earthworm containing third-stage larvae
To combat Texas cattle fever caused by Babesia bigemina, the vector tick, Boophilus
annulatus, was eradicated from the United States through an ambitious program of intensive
dipping of cattle. What aspect of the life cycle of this tick allowed the eradication program to
be successful?
Boophilus annulatus is a one-host tick
Boophilus annulatus prefers to feed on animals other than cattle
Boophilus annulatus is a three-host tick
Boophilus annulatus has low tolerance for conditions of high humidity
Boophilus annulatus has a low tolerance for high temperatures
CORRECT ANSWER
Boophilus annulatus is a one-host tick
2
@THE STUDY VAULT
,A 5-year-old gelding presents with ataxia and incoordination in all four limbs. A CSF tap
reveals antibodies to Sarcocystis neurona. How did the horse most likely acquire this
infection?
Transmission of sporozoites via the bite of a tabanid fly
Ingestion of oocysts from the feces of an infected horse
Ingestion of sarcocysts in the muscle tissue of an infected opossum
Transmission of sporozoites via tick bite
Ingestion of sporocysts from opossum feces in contaminated feed or water
CORRECT ANSWER
Ingestion of sporocysts from opossum feces in contaminated feed or water
This parasite was detected on fecal flotation of a 3-month-old puppy with acute diarrhea.
Although many dogs will self-cure this parasite, you decide to prescribe a treatment. What
treatment is most appropriate?
A) Sulfadimethoxine
B) Fenbendazole
C) Ivermectin
D) Metronidazole
E) Pyrantel
CORRECT ANSWER
3
@THE STUDY VAULT
, Sulfadimethoxine
Coccidia
An adult budgie presents with severe crusting on the beak and cere which has resulted in
severe deformity of the beak. What diagnostic assay is most likely to reveal the etiologic
agent?
A) Serum chemistry profile
B) Bacterial culture of the crusted material for the presence of Staphylococcus
C) Microscopic examination of the crusted material for mites
D) Radiographs to evaluate calcium deposition in the long bones
E) Virus isolation attempts on the crusted material
CORRECT ANSWER
Microscopic examination of the crusted material for mites
Knemidocoptes "scaly leg and face mite"
West Nile virus is commonly transmitted to horses, people, and other animals via:
A) Fleas
B) Mosquitoes
C) Horse flies
D) Ticks
E) Biting midges
CORRECT ANSWER
4
@THE STUDY VAULT
