Brucella

Question 1

is a severe acute febrile disease caused by bacteria of the genus Brucella

Answer 1

Brucellosis

Question 2

are Gram-negative coccobacilli; non-spore-forming and non-motile; aerobic, but may need added CO2.

Answer 2

Brucellae

Question 3

Classification and Antigenic Types

Answer 3

Three species (B melitensis, B abortus, B suis)are important human pathogen

Question 4

Brucellosis is a zoonosis, acquired from handling of infected animals or consuming contaminated milk or milk products. Exposure is frequently occupational.

Answer 4

Epidemiology

Question 5

Portals of entry are the mouth, conjunctivae, respiratory tract and abraded skin. Organisms spread, possibly in mononuclear pha gocytes, to reticuloendothelial sites

Answer 5

Pathogenesis

Question 6

can be made clinically if there is a history of exposure.

Answer 6

Diagnosis

Question 7

Brucellosis is prevented by pasteurizing milk, eradicating infection from herds and flocks, and observing safety precautions (protective clothing and laboratory containment). The disease is treated with doxycycline, streptomycin and rifampin.

Answer 7

control

Question 8

are Gram-negative coccobacilli (short rods) measuring about 0.6 to 1.5 μm by 0.5-0.7 μm. They are non-sporing and lack capsules or flagella and, therefore, are non-motile.

Answer 8

Brucellae