This document discusses metacestodal infections caused by tapeworms in animals. It covers the clinical signs, diagnosis, differential diagnosis and treatment of various tapeworm infections caused by Taenia, Echinococcus, Cysticercus and Spirometra species. Common signs include neurological problems, muscle lesions, and cysts forming in organs like the brain, heart and lungs. Diagnosis methods include post-mortem examination, immunological tests, radiology and microscopy of cysts. Treatment involves antiparasitic drugs like praziquantel, niclosamide and albendazole. Prevention focuses on proper cooking of meat, dog deworming and breaking the parasite's life cycle between intermediate and definitive hosts.

1. METACESTODAL
INFECTION
BY:
Dr. Pooja Farswan
Dr. Sandeeep K.
Talwar

2. CLINICAL SIGNS
DIAGNOSIS
DIFFERENTIAL DIAGNOSIS
TREATMENT
PREVENTION AND CONTROL

3. • In infection of Coenurus cerebralis(Taenia multiceps) –
• IH-Sheep,Goat DH-Dog,Fox
 Neurological signs (Gid / staggers) depend on position of cyst in CNS
 Animal moves in circle towards affected side
 Head pressing
 Blindness, muscle tremors ,Nystagmus , Excitability and collapse
 Hyperaesthesia with jerky /staggering gait
 Progressive paresis of hind limb, Inability to rise (presence of cyst in
spinal cord )
 Pressure atrophy of skull
 Infection of Cysticercus bovis(Taenia saginata)
 IH-Cattle DH-Man
 Mostly found in heart , masseter and tongue muscles
 Fever ,anorexia , pericarditis and embolism

4.  Infection of Cysticercus tenuicollis(Taenia
hydatigena)
 IH- Sheep DH-Dog
 Lambs – unthriftiness,anorexia & traumatic hepatitis
leads to death
 Infection of Cysticercus ovis(Taenia ovis)
 IH-Sheep,Goat DH-Dog,Wild Canids
 No clinical signs

5.  Infection of Spirometra (Plerocercoid)
 IH-Fish DH-Dog,Cat
 Animal show signs like anaemia
intermittent diarrhoea, costipation and abdominal
pain
 Infection of Diphyllobothridium latum
 IH-Fish DH-Man
 Cause damage with sterility,adhesion and
even death.

6. Infection of Cysticercus cellulosae(Taenia solium)
IH-Pig DH-Man
 Neuro cysticercosis- headache
,nausia,anorexia,dizziness, epilepsy and abnormal
psychiatric manifestation
 Ocular cysticercosis- unilateral cataract ,irititis retinitis
and palpabrel conjunctivitis
 Disseminating cysticercosis- masseter,heart and tongue
muscle get infected

7. • Echinococcosis/ Hydatidosis
Echinococcus granulosus,
E.multilocularis
IH-Man,Domestic and wild mammals DH-Dog
infection,sign depend upon the inovement of organ-
Liver –Digestive disturbances, ascites
Lungs- Dyspnoea, cough
Leakage of hydatid fluid causes urticaria,
asthma,fatal anaphylatic shock and death

9. 1)During post –mortem examination or meat inspection
2)Immunological test –CIE,ELISA,Single Radial Immunodiffusion
3)History of eating raw offals
4)Radiological examination and ultrasound
5)Ophthalmoscopic examination (C.cellulosae)
6)Casoni test- delayed hypersensitivity test

10.  Cysticercus tenuicollis with acute fasciolosis
-recovery of metacestodes during necropsy
--no oedema and anaemia

11. Cestodes of equines
 Niclosamide@88mg/kgb.wt
 Mebendazole@15-20mg/kg b.wt
Cestodes of ruminants
 Praziquantel@15mg/kg b.wt b.wt
 Niclosamide@75-100mg/kg
 Albendazole@10mg/kg b.wt

12. Taenia species infection
 Niclosamide@2gm per effective
person (T.saginata and T.solium)
 Praziquintel@10mg/kg b.wt
 Quinacrine@2-10mg/kg b.wt
 Bithionol@40-60mg/kg b.wt
 Albendazole@50mg/kg b.wt
(cysticercus bovis)

13. Cestodes of canines
 Arecoline Hydrobromide
@1-2mg/kgb.wt
 Bithionol @200mg/kg b.wt(for Taenia spp.)
 Praziquantel@5mg/kg b.wt
 Niclosamide@100-150mg/kg b.wt
 Dichlorophen@0.3mg/kg b.wt

14. Metacestodes of ruminants
 Ploughing and reseeding the pastures
 Avoid repeated use of infected pastures
 The secretory and excretory antigens of T.hydatigena
and T.ovis administered to pregnant ewes induce
passive transfer of immunity to the lambs
 Break the life cycle

15. Metacestodes of canines
 Dogs should be restrained from taking raw offal or
meat
 Do not allow dogs to defaecate in parks and grazing
fields
 Spread of infection in human can be checked by
proper washing of fallen fruits and vegetables ,
regular treatment of pets
 Immunization of dogs with irradiated protoscolices of
E. granulosus

16. Taenia infection
 Includes public education, sanitation facilities
and treatment of infected persons
 Proper cooking of meat (65.5C) and its
refrigeration at -20C
 Condemnation of infected carcass
 Proper meat inspection

18.  VETERINARY MEDICINE (9th edition)
O.M. RADOSTITS, C.C.GAY, D.C.BLOOD, &
K.W.HINCHCLIFF
 Textbook of veterinary parasitology
B.B Bhatia
K.M.L Pathak
D.P Banerjee
 Helminths .arthropods and protozoa of domesticated
animals
E.J.L. Soulsby

19. Thank you