Parasites: Protozoans

Question 1

Two forms

Answer 1

cysts/oocysts
trophozoites

Question 2

sacomastigophora

Answer 2

flagellates, amoebae

Question 3

apicocomplexa

Answer 3

coccidians, piroplasms, malarial organisms

Question 4

ciliophora

Answer 4

ciliates

covered in cilia
undulate to dart and twirl
live in rumen of cattle, sheep or cecum of horses
beneficial

Question 5

Giardia

Answer 5

dog, cats, humans
trophozoite
small intestine
fecal-oral (cyst)
ELISA, direct smear
zoonosis: rare

Question 6

Babesia

Answer 6

dogs, cats (rare)
RBC
transplacental, tainted blood transfusion, vector: tick, open wound
Riphecephalus sanguineus, Dermacentor recticularis
dark urine, fever, pale
humans dead end host

Question 7

Typanosoma sp.

Answer 7

old world typanosomes
African sleeping sickness
cattle, horse, ruminant, rodent, human
blood: plasma
horses: urethra vagina-Dourine venereal disease
vector: Tsetse fly

Question 8

Tritrichomonas foetus

Answer 8

cattle, cats
large intestine
fecal oral, ingestion of slugs
no zoonosis

Question 9

Cystosisospora

Answer 9

canine and feline
small and/or large intestine
fecal oral, ingestion mice, rats, hamster
zoonosis: none for canine

Question 10

Toxoplasma gondii

Answer 10

cats
small intestine
fecal oral, ingestion of raw/undercooked meat
ppp: 3-10 weeks (raw prey), 18 weeks fecal-oral
DX: ELISA antibody, FF