brucella

Question 1

brucella species

Answer 1

b melitensis
b abortus
b suis
b ovis
b canis
b neotomae
b ceti
b pinnipedialis
b microti

Question 2

b melitensis how many biotypes

Answer 2

3

Question 3

b melitensis host species

Answer 3

sheep goat

Question 4

b abortus host species

Answer 4

cattle

Question 5

b suis host species

Answer 5

swine, wild boars,
wild hare
reindeer
rodents

Question 6

b ovis host species

Answer 6

sheep, goat

Question 7

b canis host species

Answer 7

dog

Question 8

b neotomae host species

Answer 8

desert rat

Question 9

b ceti host species

Answer 9

dolphin, whale

Question 10

b pinnipedialis host species

Answer 10

sea dog, walrus

Question 11

b microti host species

Answer 11

common vole

Question 12

brucella habitat

Answer 12

infected host - obligate pathogen

Question 13

brucella morphology

Answer 13

coccoid rods
no flagella
no spore

Question 14

staining

Answer 14

Gr-

koster

Question 15

are brucella fastidious

Answer 15

yes

Question 16

culture

Answer 16

5-15% CO2

inc time 48hrs

Question 17

brucella selective culture

Answer 17

polymyxin, bacitracin, cycloheximide

Question 18

which species have S-R colonies

Answer 18

b melitensis
b abortus
b suis

Question 19

which species have only R colonies

Answer 19

B ovis

B canis

Question 20

brucella catalase

Answer 20

pos

Question 21

brucella oxidase

Answer 21

pos

Question 22

brucella OF

Answer 22

oxidative

Question 23

brucella urease

Answer 23

pos, except b ovis

Question 24

brucella antigens

Answer 24

A and M polysaccharides in the cell wall

Question 25

which brucella species have cross reactions

Answer 25

b ovis and b canis | b melitensis and b abortus and b suis

Question 26

brucella groups by species

Answer 26

susceptibility to phages, oxidative metabolism, natural host

Question 27

brucella biotype groups

Answer 27

CO2 demand, H2S production, fuchsin/thionin tolerance, agglutination

Question 28

brucella resistance

Answer 28

fair

Question 29

what happens to brucella above 60degrees and under pH4

Answer 29

they die - pasteurisation of milk

Question 30

how long can brucella survive in lymph nodes and parenchymal organs

Answer 30

3weeks

Question 31

how long can brucella survive in cooled sweet milk

Answer 31

30 days

Question 32

how long can brucella survive in chorion, shaded and cool enviro

Answer 32

1-2months

Question 33

which brucella species is the only one that doesnt infect humans

Answer 33

b ovis