Taenia serialis - coenurus serialis

Question 1

IH of Taenia serialis

Answer 1

Lagomorphs

Question 2

FH of Taenia serialis

Answer 2

Dog, fox, wolf & other canids

Question 3

Location of Taenia serialis

Answer 3

IH: subcutaneous & intramuscular CT
FH: SI

Question 4

Morphology of Taenia serialis

Answer 4

Up to 1 (2-5) m, scolex with 4 suckers, rostellum with 2 rows of 48-60 rostellar hooks, neck, up to 1000 proglottids

Question 5

Pathogenesis of Taenia serialis

Answer 5

Coenurus serialis under skin, in peritoneal cavity, bain, liver & other organs.
The coenurus serialis larvae is found in subcutaneous and intramuscular connective tissue of hares, rabbits, squirrels, goats and rarely in humans.

Question 6

CS of Taenia serialis

Answer 6

No apparent symptoms. Cysts that are in skeletal muscles can compromise the mobility of rabbits.

Question 7

Dx of Taenia serialis

Answer 7

palpation of subcutanous cysts. PM findings

Question 8

Tx of Taenia serialis

Answer 8

IH: none
FH: praziquantel or fenbendazole

Question 9

Control of Taenia serialis

Answer 9

Prevent canid access to infected rabbits. Regular deworming of dogs.

Question 10

LC of Taenia serialis

Answer 10

1. Adults shed gravid proglottids with eggs in the faeces.
2. Embryonated eggs are ingested by IH – oncosphere hatches in SI – larva burrows into the intestinal wall and enters the blood stream – migrates to various tissues, primarily subcutaneous & intramuscular CT, and develop into coenurus serialis.
3. FH ingested infected IH with coenurus – attach to SI, develop into adults & release gravid proglottids.

Question 11

additional locations of coenurus serialis

Answer 11

subcutaneous tissues, muscles, eye, liver

Question 12

Metacestode of Taenia serialis

Answer 12

coenurus serialis