1 of 10

�

Dr. Pallav Shekhar

Asstt. Professor

Veterinary Medicine

Shistosomosis

UNIT-6

2 of 10

Nasa/Nakra/Sunsunna

  • Trematodal infection

​

  • Host: Cattle, Sheep, Goat, Pigs, Dogs and man

​

  • In human the infection is known as Bilharziasis.

3 of 10

Species

  • Shistosoma bovis

​

  • Schistosoma indicum

​

  • Schistosoma nasalis

​

Snail- Indoplanorbis exutus- Intermediate host

4 of 10

Life Cycle-Indirect

Eggs in Feces

Hatching in water

Miracedium

Snail

Development

Cercariae

Water

New host

Blood circulation

Nasal veins

5 of 10

Clinical Signs

  • Rhinitis
  • Sneezing
  • Snoring sound
  • Abscess on mucous membrane
  • Development of fibrous tissue
  • Cauliflower like growth in nasal passage
  • Nasal garnuloma

​

​

6 of 10

Human

  • Swimmers's itch
  • Hunter's itch
  • Rice paddy itch
  • Lake side itch

7 of 10

Diagnosis

  • Clinical Signs
  • Fecal examination
  • Nasal discharge examination

8 of 10

9 of 10

Treatment

  • Tartaemetic
  • Sodium antimony tartarate
  • Anthiomaline 1.7mg per kg
  • Praziquantel @ 25mg/kg body weight orally for 3 days

10 of 10

Control

  • Chemical Control: Copper sulphate, Sodium pentachlorphenate
  • Biological Control: Soap berry, Shikakais plant growth.
  • Larvae of Sciomyzid fly can kill planorbid snails
  • Rearing of ducks