Related Experiment Videos
Hydatidosis: dynamics of transmission
1Department of Parasitology, Bicetre Hospital, Paris XI University, Kremlin-Bicêtre, France. patrice.bouree@bct.ap-hop-paris.fr
World Journal of Surgery
|February 24, 2001
Summary
Hydatidosis, a zoonotic disease caused by Echinococcus granulosus, is transmitted through eggs shed by definitive hosts like dogs. Larvae infect intermediate hosts, primarily livestock and humans, impacting organs like the liver and lungs.
Area of Science:
- Veterinary Parasitology
- Zoonotic Diseases
- Molecular Epidemiology
Background:
- Hydatidosis is a significant zoonotic disease affecting numerous animal species and humans globally.
- The parasite *Echinococcus granulosus* exhibits a complex life cycle involving canid definitive hosts and various intermediate hosts.
Purpose of the Study:
- To elucidate the morphologic and biologic characteristics of *Echinococcus granulosus*.
- To identify and differentiate strains of *Echinococcus granulosus* based on intermediate hosts using DNA analysis.
Main Methods:
- Morphologic and biologic characterization of *Echinococcus granulosus*.
- DNA analysis for strain differentiation.
- Epidemiological investigation of transmission dynamics in different geographical regions.
Main Results:
- Distinct strains of *Echinococcus granulosus* were identified, correlating with specific intermediate hosts (sheep, cattle, pigs, horses, camels).
- Dogs serve as the primary definitive host, disseminating eggs that infect intermediate hosts, with larvae typically migrating to the liver and lungs.
- Transmission dynamics and host-parasite interactions vary significantly across different countries and regions, influenced by local practices and host availability.
Conclusions:
- The study highlights the diverse transmission cycles of *Echinococcus granulosus* globally.
- Understanding these varied dynamics is crucial for developing targeted control strategies against hydatidosis in different endemic areas.