Yersinis

Question 1

What species of yersinia cause human plague?

Answer 1

Yersinia pest is

Question 2

What 3 forms of plague in human ?

Answer 2

1-bubonic plague
2-pneumonic plague
3-septicaemic plague

Question 3

What test is preferred for diagnosis of Y.pestis?

Answer 3

PMR

Question 4

How transmission of yersinia spp ?

Answer 4

Y.pestis……….by flea

Y.pseudo tuberculosis &Y.entercolitica …….by orally

Question 5

Who species has coagulase + and bipolar staining ?

Answer 5

Y.pestis

Question 6

What are the distinctive signs of bubonic and septic plague ?

Answer 6

Bubonic …….Regional buboes

Septicaemic …….black area

Question 7

How appear Y.pestis when staining on wayson or Wright stain ?

Answer 7

Safety pin staining

Question 8

What distinguishing features for Y.entercolitica?

Answer 8

Motile on25 c….nonmotile on37c
Capsule in vivo not in culture
Multiple at4c

Question 9

What are causing pseudoappendicitis ?

Answer 9

Y.entercolitica and Y.pseudo tuberculosis