Exam 3: Brucella Flashcards
T/F, Brucella is reportable
T
What are the 4 spp. of Brucella we talked about in class
B. melitensis
B. abortus- cattle
B. suis-pig
B. canis- dog
What is the principle ccause of Brucellosis in humans
B. melitensis
What gives you a false positive serology for brucella
Y. enterocolitica 09 infection
T/F brucella is mainly spread by male animals
F. females,
Spp. of brucella in cattle
B. abortus
C/S of brucella in cattle
no symptoms
Where is Brucella found in cattle
intracellular in macrophages
What is the incubation period of B. abortus
1-6 weeks
how is B. abortus introduced into the cow
Mucosae
Oral
Wounds
What are the target organs of B. abortus
Repro organs
How do you Dx B. abortus
Milk samples for Abs and ags.
VF of B. abortus
Cell wall
What are the two colonies of B. abortus based on cell wall
- smooth colonies
2. Rough colonies
Which colony of Brucella is more virulent
Smooth
What cell wall component is responsible for preferential location
Erythritol
how do you DX Brucella
- SAW test
- Two ELISAs
- IFN gamma test
What is the Brucellergen skin test, and why is it not recommended
Tests for cellular immunity but often get positives
What test do you you to distinguish between false positives
EU regulation
T/F B. suis is a reportable dz
T
Reservoir for B. suis
Wild boar
How many biovars are there of B. suis
5
1-3 are most pathogenic
What is the target organs of B. suis
Repro tract
what are the C/s of B. suis
- Abortion
- Arthritis
- osteomyelits
T/F. swine can become infected with B. abortus, B. melitensis, and B. canis
T. but no c/s
how is B. suis introduced into the pig
- skin
2. mucosae
Where does B. suis multiply
Reginal ln.
Where is B. suis carried in carrier animals
Macrophages
Where geographically is B. melitensis and B. ovis found
Mediterranean
T/F B. canis does not have O antigens
T
C/S. of B. canis
- Late abortion
- Epididymitis
- Scrotal derm
How do you dx B. canis
- bacteriology
2. Serology
