2.9.2.2 Salmonella Lab diag

Question 1

What is the colonial morphology in MacConkey for Salmonella?

Answer 1

Colorless

Question 2

What is the colonial morphology in Salmonella-Shigella agar for Salmonella

Answer 2

Black colony

Question 3

What is the colonial morphology in Bismuth Sulfite agar for Salmonella

Answer 3

Metallic colonies with a black ring

Question 4

What is the colonial morphology in HEA for Salmonella

Answer 4

Green colony with Black center

Question 5

What is the result of TSI for salmonella spp?

Answer 5

K/A + H2S

Question 6

All Salmonella spp are K/A in LIA except?

Answer 6

Salmonella paratyphi

Question 7

What is the result for Indole, VP, and urease?

Answer 7

Negative

Question 8

What is the result for MR?

Answer 8

Positive

Question 9

All are Negative in Citrate except?

Answer 9

Salmonella paratyphi

Question 10

What test is no longer used to diagnosed Salmonella enterica?

Answer 10

Widal’s test

Question 11

What is currently being used to diagnosed Salmonella enterica?

Answer 11

Rapid slide test

Question 12

What are the reagents used in Rapid slide test?

Answer 12

O and H antigen

Question 13

What is being added in O and H antigen for Rapid slide test?

Answer 13

Patient’s serum

Question 14

What happens if agglutination occurs in O antigen?

Answer 14

Active infection

IgM

Question 15

What happens if agglutination occurs in H antigen?

Answer 15

Post vaccination or previous infection

IgG

Question 16

What happens if agglutination occurs in Vi antigen?

Answer 16

Carrier

Question 17

What is the process of Widal’s atest?

Answer 17

Equal amount of O and H antigen in test tube
then dilute it

Question 18

How dilution occur in O and H antigen?

Answer 18

by 2

Question 19

In Widal’s test how do you known if you have typhoid fever?

Answer 19

> 160

tither will be based on your last positive result of agglutination