listeria Flashcards
1
Q
characteristics of listeria
A
part of the normal microbiota facultative anaerobes - gram-positive short rods, can be coccoid - beta-hemolytic found in decaying plant matter survives 2 years in soil
2
Q
virulence of listeria
A
internalin A + B
listerolysin O toxin
phospholipase C
actin-polymerizing protein
3
Q
L. monocytogenes ruminants
A
dz: encephalitis, abortion
- enters body through mouth, migrates via. trigeminal n. to brain
causes: meningoencephalitis, microabscesses all over the brain
treatment: remove abortuses, may be biohazardous
- high dose penicillin, tetracycline
4
Q
L. monocytogenes birds
A
dz: septicemia, encephalitis
likes cold wet area
5
Q
L. ivanovii
A
host: sheep, cattle
dx: abortion
