(01) Brucellosis

Question 1

(Brucella Suis)

1. preferential host?
2. can it be passed to humans?
3. How often does it infect other domesticate animals?
4. clinical signs?
5. What type of transmission is important in pigs?
6. boars excreting brucella in semen look how?
7. is there a vaccine?

Answer 1

1. swine
2. yes
3. rarely (narrow host range vs. other brucella)
4. abortions, lameness, spondylitis
5. veneral transmission (shed in high numbers in semen)
6. asymptomatic or testicular abnormalities
7. no

Question 2

(B. Melitensis)

1. found in what?
2. common in US?
3. causes what in goats and sheep?
4. can humans be infected?

Answer 2

1. goats/sheep (wild-camel, wild ruminants)
2. no - but is elsewhere
3. late stage abortion and orchitis (similar to B. abortus in bovids)
4. yes (malta fever)

Question 3

(B. Ovis)

1. infects only what?
2. causes what in rams?
3. can humans get it?

Answer 3

1. sheep
2. epididymitis and orchitis
3. no

Question 4

(B. Canis)

1. geographic distribution?
2. what % of dogs in US south are seropositive? in Mexico?
3. Does it infect livestock?
4. lives where in female?

how does she present?

how can she spread?

4. 5 where in male
5. major route of transmission?
6. path: causes what?
7. chronic cases can see what?
8. Diagnosis?
9. treatment
10. humans get?

Answer 4

1. everywhere
2. 8%, 20-30%
3. NO!
4. vaginal/uterine tissues for life

asymptomatic

urine, aborted fetuses, breeding (most common)

4. 5 testicles/seminal fluids
5. semen from infected male dogs
6. late embryonic death, abortion, orchitis, epididymitis, sterility
7. dyskospondylitis
8. serologically/culture to be sure
9. not really
10. can (but rare)

Question 5

(Brucellosis Zoonosis)

1. are humans susceptible?
2. susceptble to which ones?
3. Brucellosis in humans known as what?
4. is abortion a feature of human infection?
5. Can you get it from eating meat?
6. disease may be transmitted when?

Answer 5

1. YES
2. abortus, suis, melitensis (rarely with canis)
3. UNDULANT FEVER, MEDITERRANEAN FEVER, or MALTA FEVER
4. evidence that it can (but much fewer than in animals)
5. no - disease causing bacteria not in muscle
6. slaughter, processing fresh organs