Sarcocystis neurona Flashcards
1
Q
DH
A
opossums
2
Q
IH
A
armadillo, raccoon, cat (accidental host are horses, an agent of EPM!!)
3
Q
Infectious stage for DH
A
sarcocyst with bradyzoites
4
Q
Infectious stage for IH
A
oocysts/ sporocyst, which is the Accidental host infectious stage
5
Q
Site of infection for:
DH
IH and
Accidental Host
A
DH- Intestines
IH- Skeletal muscle, tongue
AH- CNS
6
Q
Routes of Infection:
A
DH- ingestion of tissue cyst (sporocyst)
IH: Ingestion of oocyst/sporocyst in feces from the environment
AH- ingestion of contaminated feed
7
Q
PPP
A
9 days
8
Q
EPM
A
Most common neurological dz in horses in the US
9
Q
Clinical signs in DH and IH
A
DH- none
IH- asymp.
10
Q
Diagnosis
A
DH: oocysts/sporocyst on fecal floatation
IH: Sarcocysts on histo, IFA, PCR
