Yersinia

Question 1

Which types of Yersinia are zoonotic?

Answer 1

Y. pestis

Y. psuedotuberculosis

Y. enterocolictica

Question 2

Which genus of Yersinia is a fish pathogen?

Answer 2

Y. ruckeri

Question 3

Yersinia is a gram ______ bacteria.

Answer 3

Negative

Question 4

Which type of Yersinia is responsible for the bubonic plague?

Answer 4

Y. pestis

Question 5

Which domestic animal is Y. pestis most commonly seen in?

Answer 5

Cats

Question 6

True/False. Cat and dog fleas transmit the diseases caused by Y. pestis.

Answer 6

False.

Cat and dog fleas don’t transmit the disease since their proventriculus do not get blocked during bacterial replication.

Common in RAT FLEAS!

Question 7

Which months of the year would you see less transmission of Y. pestis?

Answer 7

The summer months. At temps above 27C pestis does not produce this coagulase and does not block the proventriculus.

Question 8

What does the cell wall of Y. pestis lack that would make it a “rough phenotype”?

Answer 8

No O-antigen

Question 9

Which virulence factor is unique to Y. pestis?

Answer 9

The capsule

Question 10

Which toxin that is unique to Y. pestis protects the bacteria from digestive enzymes of fleas?

Answer 10

Ymt (Yersinia mouse toxin)

Question 11

Which toxin unique to Y. pestis has degradative activity on coagulase, fibrinoytic and C3?

Answer 11

Plasminogen activator

Question 12

What stain would you use to diagnosis Y. pestis?

Answer 12

Geisma stain

Question 13

What are the plagues caused by Y. pestis?

Answer 13

Bubonic plague (lymph nodes)

Septicemic plague (DIC)

Pnuemonic plague (pneumonia)

Ocular plague (deer mule - case study)

Question 14

True/False. Y. pestis is highly antimicrobial resistant.

Answer 14

False. It is rarely resistant.

Question 15

What organs are typically infected with Y. psuedotuberculosis?

Answer 15

Intestine, abdominal lymphnodes, liver, spleen and septicemia

Question 16

Which genus of Yersinia causes mastitis in cattle?

Answer 16

Y. pseudotuberculosis

Question 17

Which species does Y. pseudotuberculosis typically infect?

Answer 17

Birds and rodents

Occasionally in domestic animals (cats) and primates

Question 18

Which cells does Y. pseudotuberculosis typically targe for adherence?

Answer 18

M cells and basolateral ileal epithelial cells

Question 19

How is Y. pseudotuberculosis transmitted?

Answer 19

Ingestion

Question 20

True/False. Animals that survive Y. pseudotuberculosis have a natural aquired immunity.

Answer 20

True

Question 21

Which Yersinia causes abortions in ruminants and monkeys?

Answer 21

Y. pseudotuberculosis

Question 22

What months of the year does Y. pseudotuberculosis tend to occur?

Answer 22

Colder months

Question 23

Which Yersinia is mainly in domestic animals and primates?

Answer 23

Yersinia entercolitica

Question 24

What diease pattern will Y. enterocolitica cause in domestic animals?

Answer 24

Ileitis, gastroenteritis and mesenteric lymphadenitis

Question 25

Which genus of Yersinia cause an outbreak of blood diarrhea in African Green Monkeys?

Answer 25

Y. enterocolitica

Question 26

Which genus of Yersinia causes enteric red-mouth disease?

Answer 26

Y. ruckeri

Systemic bacterial illness of slamonids