Parasites: Nematodes_Ascaroidea (roundworms)

Question 1

Tx

Answer 1

Pyrantel
Fenbendazole
Ivermectin

Question 2

Dx

Answer 2

fecal float

Question 3

appearance of egg

Answer 3

circle with dark center
except Toxascaris leonina =ground glass center and Balyisascaris procyonis= wobbly edges

Question 4

predilection site

Answer 4

small intestine
except Baylisascaris procyonis also CNS

Question 5

canine roundworm

Answer 5

Toxocara canis
route: fecal-oral, transplacental, transmammary, ingestion of paratenic host
zoonosis: VLM, NLM, OLM
PPP: 2-4 weeks
site: small intestine
Dx: fecal float
Tx: Fenbendazole
signs: pot bellied, stunted growth, v/d

handling contaminated soil

Question 6

Feline roundworm

Answer 6

Toxocara cati

route: fecal-oral, transmammary, ingestion of paratentic host
zoonosis: VLM, OLM
PPP: 5-8 weeks
site: small intestine
Dx: fecal float
Tx: Pyrantel
signs: poor growth, pot bellied, v/d

Question 7

cat and dog roundworm

Answer 7

Toxascaris leonina
route: fecal-oral, ingestion of paratenic host
zoonosis: none
PPP: 74 days/10 weeks
site: small intestine
signs: v/d, pot bellied-often no clinical signs
Dx: fecal float
Tx: Fenbendazole
zoonosis=so rare almost none

Question 8

racoon and dog roundworm

Answer 8

Balysascaris procyonis

route: fecal oral, ingesion of paratenic host
zoonosis: NLM

Question 9

equine roundworm

Answer 9

Parascaris equorum
route: contaminated feed/water

Question 10

cattle, buffalo, bison roundworm

Answer 10

Toxacara vitulorum
“large, intestinal worm of cattle and buffalo”
route: transmammary, fecal-oral
zoonosis-possible but rare

Question 11

Ascaris suum

Answer 11

pig roundworm
large, intestine roundworm
route: fecal oral, ingestion of paratenic host
zoonosis: yes but rare (intestine)