Flashcards in E2 Genus Brucella Deck (43)
What organs do bacteria from the genus Brucella infect?
(both male and female)
What ages are affected by the genus Brucella?
Sexually mature animals
What species of Brucella is not zoonotic?
What is species in the most pathogenic in humans?
What is the gram reaction and cultural characteristics of bacteria in the Brucella genus?
1. Gram negative small rods
2. Aerobic or microaerophilic
3. Slow growth
What cells do bacteria in the Brucella genus infect?
2. Endothelial cells
How does Brucella infect reproductive organs?
Infection of mucous membranes
Bacteremia spread to reproductive organs
How long is the incubation period for Brucella infection?
(1-2 months before clinical signs)
What disease do bacteria from the genus Brucella cause in humans?
What is the disease caused by Brucella abortus in cattle?
What is the reservoir for Brucella abortus?
What is the prevalence of Brucella abortus in US cattle herds?
What is the most frequent route of infection for Brucella abortus?
(but can occur through any mucus membrane)
When does Brucella abortus cause abortions in cattle?
What effects if any does Brucella abortus have in male cattle?
How does Brucella abortus affect fertility in male cattle?
Can lead to sterility!
How does Brucella abortus cause abortions in cattle?
1. Uldercation of endometrium
2. Destruction of placental villi in cotyledons
How long do infections with Brucella abortus last in cattle?
They are infected for life!
What other species besides cattle can be infected with Brucella abortus?
2. Sheep & goats
What diseases can be caused by Brucella abortus in horses?
1. Fistulous withers
2. Poll evil
Does Brucella abortus cause abortions in horses?
How does Brucella abortus typically infect humans?
Via cuts in the skin
How is Brucella abortus usually diagnosed?
1. Clinical signs
2. Direct smears from infected tissue
3. ELISA (confirmatory test)
Is there a vaccine available for Brucella abortus?
What animals are typically infected with Brucella suis?
(more host specific)
How is Brucella suis usually transmitted in pigs?
Is there a vaccine for Brucella suis?
(depopulation of herd)
What are the clinical signs of Brucella suis in male pigs?
What animals can be infected by Brucella melitensis?
1. Goats & sheep