Gram Positive Rods "Bacilli”

Question 1

A 27-year-old female who is 8 weeks pregnant ate raw shellfish 2 days ago. She now presents with muscle aches, low-grade fever, and malaise. A workup reveals a gram-positive organism with “tumbling motility.” What is the most likely diagnosis?

Answer 1

Listeria monocytogenes

Question 2

Consumption of unpasteurized milk can lead to the acquisition of which bacteria ?

Answer 2

Listeria Monocytogenes

Question 3

What is the most likely cause of illness in a neonate who develops granulomatous lesions with microabscesses acquired through food-borne transmission from manure-contaminated cabbage, unpasteurized milk, and fresh Mexican-style cheeses?

Answer 3

Listeria monocytogenes

Question 4

Listeria monocytogenes escapes destroy phagocytic vacuole through

Answer 4

Listeriolysin O

Question 5

Whats the virulence factors of listeria monocytogenes

Answer 5

• Facultative intracellular organism

* listeriolysin O

Question 6

Club shaped gram positive rods

Answer 6

• Cornybacterium diphtheria

* Listeria monocytogenes

Question 7

1ry food born disease occur with

Staphylococcus aureus
Streptococcus viridans
Listeria monocytogenes
Neiseeria Gonorrhea

Answer 7

Listeria

Question 8

Neonatal sepsis & meningitis caused by

Answer 8

Streptococcus agalactiae and listeria monocytogenes

Question 9

Erythrogenic like toxin acquired by phage

Answer 9

Exotoxin of corybacterium diphtheria

Question 10

Virulence of diphtheria?
Endotoxin
Exotoxin
Hemolysin 
Luekocidin

Answer 10

Exotoxin (A-B toxin)

Question 11

Mechanism of protein synthesis inhibition in diphtheria

Answer 11

Inhibits elongation factor 2

Question 12

A-B exotoxin is produced by ………….. and ……………

Answer 12

Cornybacterium diphtheria and Bacillus anthracis

Question 13

Zoonotic bacteria (1ry animal disease bacteria)

Bacillus cereus
Streptococcus pneumonia
Bacillus anthracis
Listeria monocytogenes

Answer 13

Bacillus anthracis

Question 14

Protein capsulated bacteria but non immunogenic

Answer 14

Bacillus anthracis

Question 15

Clostridium are hard to eradicate

Answer 15

Due to it’s presence in soil

Question 16

List four types of clostridium

Answer 16

Clostridium tetani
Clostridium perfringens
Clostridium botulinum
Clostridium difficile

Question 17

List one gram positive anaerobic bacteria

Answer 17

Clostridium

Question 18

No diarrhea on most people on antibiotics?

Answer 18

Small population around 3% have clostridium difficile

Question 19

Pseudo membranous colitis is caused by …………..

Answer 19

Clostridium difficile

Question 20

Ingestion of improbably salted fish can cause ………….. which produce ………. toxin

Answer 20

Clostridium botulinum , Neurotoxin type A , B & E