VPA 211: General Veterinary Parasitology and Helminthology (3+1)

DEVELOPMENT IN DEFINITIVE HOST

• After ingestion young flukes penetrate the intestinal wall, enters the peritoneal cavity to diaphragm and then the lungs after 1 –3 weeks of infection.
• The parasite penetrate the pulmonary forming a cystic cavity where the parasite mature into adult.
• The cyst usually contains two parasites surrounded by a purulent fluid mixed with blood and eggs of the parasite.
• In cats, 1000-200 eggs are laid/ day flukes.