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Bacteriology Exam 2 > Brucella > Flashcards

Flashcards in Brucella Deck (14)
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1
Q

Specifics

A

non motile, coccobacilli, oblisgate symbiont

faculative intracellular

2
Q

B. abortus

REPORTABLE

A
spread by females 
acute- general symptoms 
chronic intermittent fever (3-4wks)
path target organ- uterus, abortion, premature calf is carrier 
subclinical mastitis 
dx milk samples for ag or ab
3
Q

B. abortus in humans

A

acute bacteremic phase
chronic symptoms (years)- fever intermiottent, headache
muscle pain, enlarged lymph nodes, splenomegaly, osteomyelitis

4
Q

virulence factors

A
no flagella or capsule 
thick peptidoglycan 
erythritol targets repro/mammary 
smooth cell wall 
rough cell wall- less virulent lacking O polysaccharide
5
Q

pathogensis

A

PO/wounds–> lymoph node–> target organ
with no wsymptoms spread is intracellular
target organs- repro and joints

6
Q

immunity

A

Abs come late
cellular immunity early
carriers- when cellimmunity is not capable of killing intracellular bacteria and immunity goes down

7
Q

Dx

A

SAW SAT slow agglutination test
rose bengal test
CFT ELISA IFN y
SAW +–> double ELISA–> IFNy test = brucellose

8
Q

Brucella suis

reportable and zoonotic

A
reservoir is wild boar 
biovar 1-2= reservoir in rabbits, biovar 3= pigs
9
Q

Brucella suis Cs in swine

A

abortion, orchitis, infertility

arthiritis, bursitis, osteomyelitis

10
Q

Brucella suis CS in human

A

acute- rise and fall in temp, sweating, chills, malaise, joint pain
osteomyelitis
localization, necrosis, pus- chronic

11
Q

Brucella suis pathogenesis

A

skin/mucosa–> regional lymoh nodes –> bacteremia –> localization and abcess
more pathogenic in humans and B.abortus

12
Q

Dx of brucellosis

A
contact with bovines (B.abortus) 
yersinia enterocolitica O9 
brucella suis 
serology 
lots of cross reaction
13
Q

B. melitensis

A

sheep and goat
in subtropical and mediterranean
principle cause for brucellosis in humans no vx
no O Ag, obligate parasitic, obligate pathogen

14
Q

B.canis

A

long bacteremia
no fever
late abortion, lymphandenitis, late abortion, vaginal discharge, epididmitis, scrotal dermatitis, atrophia testicularis, prostatitis, STD