Oxyuris equi and Trichinella spiralis

Question 1

What is Oxyuris equi known as?

Answer 1

Equine Pinworm

Question 2

Where is Oxyuris equi located on it’s host?

Answer 2

-Cecum, Colon, and Rectum
-Females deposit eggs on Anus

Question 3

What are the clinical signs of Oxyuris equi?

Answer 3

Pruritus and broken tail hairs

Question 4

Diagnosis/ egg identification of Oxyuris equi

Answer 4

Tape impressions, anal scraping, and fecal floatation

Question 5

Trichinella spiralis is known as what?

Answer 5

Trichina Worm

Question 6

Who is the host of Trichinella spiralis/ Trichina worm?

Answer 6

Pig definitive and intermediate hosts
Humans are aberrant hosts

Question 7

Where is the Trichinella spiralis located within its host?

Answer 7

Definitive host: small intestine
Intermediate host: muscles

Question 8

Trichinellas spiralis problems/ symptoms

Answer 8

-asymptomatic
-muscle damage (intermediate host)

Question 9

Diagnosis of Trichinellas spiralis

Answer 9

-muscle biopsy
-serology
eggs or larva seldom recovered

Question 10

Trichinella spiralis females give birth to live larva. This is called what?

Answer 10

Viviparous

Question 11

Newly born trichinella spiralis larva penetrate the mucosa of the definitive host’s small intestine where they enter the blood and travel to skeletal muscles. They encyst here for long term. How does the life cycle continue from here?

Answer 11

Another definitive host must eat this muscle at a point in time when the larva are in their infectious state.

Question 12

Does Trichinella Spiralis have zoonotic potential?

Answer 12

Yes!!! Undercooked meat (pork or wild game)