Proteus mirabilis

Question 1

gram stain

Answer 1

gram negative rod

Question 2

media

Answer 2

grows on MacConkey, HE, XLD

Question 3

appearance on media

Answer 3

“swarms” on non-selective agars
NLF, clear on all three, with or without black centers on XLD or HE
Foul smelling

Question 4

special characteristics

Answer 4

swarming, odor of “burnt chocolate” or chocolate cake, vulgaris stain is Indole positive, produces Urease enzyme

Question 5

IMViC

Answer 5

• • • -

Question 6

Lactose fermentation

Answer 6

negative

Question 7

Indole

Answer 7

negative

Question 8

Methyl Red

Answer 8

positive

Question 9

Voges Proskauer

Answer 9

negative

Question 10

Citrate

Answer 10

negative

Question 11

Motility

Answer 11

positive, swarming

Question 12

H2S production

Answer 12

positive

Question 13

TSI

Answer 13

A/A H2S+

Question 14

LIA

Answer 14

R/A H2S+

Question 15

Diseases

Answer 15

suppurative abscesses, pyelonephritis, cystitis, and infant diarrhea; produces “antibiotic resistant diarrhea” due to multiple drug resistance; UTI, nosocomial infections

Question 16

Transmission

Answer 16

endogenous or person to person spread, especially in hospitalized patients

Question 17

Reservoirs

Answer 17

manure, sewage, soil

Question 18

Vectors

Answer 18

human

Question 19

Virulence factors

Answer 19

similar to E. coli