10 - Yersinia

Question 1

(Yersinia)

1. contains 11 species
2. gram?
3. shape?

(name that species)

1. what is foodborne pathogen, mostly in children?
2. what is an animal pathogen, occasionally in humans?
3. Which is primarily a rodent pathogen?
4. all three can adapt to what?

Answer 1

2. negative
3. rods
4. Y. enterocolitica
5. Y. pseudotuberculosis
6. Y. pestis
7. wide range of temperatures (4-37 C)

Question 2

(Yersinia Pestis)

1. gram negative bipolar staining bacillus

2.

Answer 2

just remember that it is gram negative he says

Question 3

(Yersinia Pestis)

1. causes wha?
2. exists in nature in what animal?

Answer 3

1. plague
2. a disease of wild rodents

Question 4

(yersinia pestis)

1. can carnivores (dogs, coyotes, raccoons and skunks) become infected?

do they develop clinical signs?

2. What animal has increased suscepbility?

3. is plague a disease of domestic animals?

4. Humans may develop bubonic, septicemic, or pneumonic plague from what?

Answer 4

1. yes

no

2. domestic cats

also infection of goats, sheep and camels have been reported

3. no

4. bite of infected fleas, handling of infected tissue, contact with airborne droplets or household pets with plague

Question 5

Answer 5

Question 6

Question 7

(Transmission of Plague to Humans)

Answer 7

Question 8

Answer 8

Question 9

(Plauge)

1. most common clinical form is what?
2. less common forms include sepitcemic, pneumonic and meningeal plague

Answer 9

1. acute febrile lymphadenitis called bubonic plague, enlargement of lymphatic glands in groins, axillae and other parts

Question 10

Answer 10

Question 11

(Lesions of plague in domestic cats)

1. CAts are infected more than other domestic animals… by what?

2. enlarged lymph nodes (submandibular and cervical), abscesses

3. What are typical signs?
4. pathologic lesions include necrotic nodules in the spleen and liver and evidence of what?
5. mortality is what among infected cats?
6. infected cats are source of infection to human

Answer 11

1. rodent fleas (not cat fleas)
2. lethargy and fever
3. suppurative pneumonia
4. 50%

Question 12

(Dogs with Yersinia Pestis)

1. dogs inoculated with Y. pestis react only with what?
2. all orally infected dogs develop antibodies and recover
3. is there a risk of infection to humans?

Answer 12

1. fever
2. unknown

Question 13

Answer 13

Question 14

(Yersinia pseudotuberculosis)

1. primarily animal pathogen, occasionally causes disease in humans

2. affects what animals?

3. acute mesenteric lymphadenitis in humans, fever
4. fatal septicemia in animals

5. cats get what?

Answer 14

2. rodents, turkeys, goats, swine, cattle, sheep, wild birds, deer, humans

5. UI disturbances

Question 15

(Yersinia Enterocolitica)