PHF Flashcards
1
Q
Organism
A
Neorickettsia risticii
2
Q
Invades
A
macrophages and epithelial cells of intestine
3
Q
Months of concern
A
May - November
4
Q
Organism present
A
in feces
5
Q
Intermediate hosts
A
snails, mayflies, dragonflies, caddisflies, damselflies
6
Q
Can be contracted by
A
drinking infected water
eating infected insect
skin penetration
7
Q
After infection, N risticii infects
A
blood monocytes
8
Q
GI tract
A
lesions
9
Q
Diarrhea related to
A
loss of epithelial cells
10
Q
Diarrhea/loss of epithelial cells causes
A
reduced luminal absorption of electrolytes and increased water losses
11
Q
Recovered horses are immune for
A
at least 20 months
12
Q
Incubation period
A
1-3 weeks
13
Q
Risk factors
A
proximity to water
time outside
insect population
14
Q
Clinical signs
A
Depression anorexia biphasic fever decreased intestinal sounds moderate to severe diarrhea abdominal discomfort Possible: severe toxemia dehydration cardiac compromise congested mucosal membranes
15
Q
Increases risk for
A
laminitis
