MSK Parasites Flashcards
What are the helminths of the MSK? (2)
- Tichinella (roundworm)
- Raenia spp. (tapeworm)
What are the protozoa of the MSK? (2)
- Sarcocystis spp.
- Toxoplasma gondii
What is Trichinella? (3)
What is the most common species of Trichinella?
T. spiralis - host = domestic and wild animals, domestic pigs, wild board and horses = source of human infection, cosmopolitan location
Trichinella - life cycle (7)
- Ingestion of undercooked meat by humans = dead-end host, don’t see animals feeding on humans, so no further transmission
- Larva released in SI
- Adults in SI
- Larva deposited in mucosa
- Encysted larva in striated mucle
- Sylvatic cycle (predation/scavenging)
- Domestic cycle (meat scraps of rodents/cannibalism) - farmed animals (pigs in Europe)
Trichinella - life stages (5)
Trichinella species - hosts, source of human infection and location? (8)
Trichinella - epidemiology + transmission in animals (6)
Trichinella - epidemiology and transmission in humans (6)
Trichinella - clinical consequences of infection in animals (2)
Trichinella - diagnosis in animals (5)
Trichinella - other diagnostic methods (2)
Trichinella - control and prevention (5)
Trichinella saginata - definitive host, intermediate host, metacestode location, metacestode name
- Human
- Cow
- Muscle
- Cysticercus bovis
Trichinella solium - definitive host, intermediate host, metacestode location, metacestode name
- Human
- Pig, human
- Muscle, brain
- Cystercercus cellulosae
Trichinella ovis - definitive host, intermediate host, metacestode location, metacestode name
- Dog
- Sheep
- Muscle
- Cysticercus ovis
Taenia adult morphology (3)
Taenia - general features of epidemiology (6)