21.2

Question 1

Coagulase in S.Auerus

Answer 1

Plasma clotting protein that makes abscess

Question 2

Staphylococcus aureus can be described as?

Answer 2

• gram positive
• coagulate positive species (CoPs)
• mannitol fermenter

Question 3

Why does s.aureus make pus

Answer 3

They produce leukocidins which kill white blood cells

Question 4

Impetigo

Answer 4

Causes formation of vesicles, pustulates, and bullae around node and mouth

Question 5

What bacteria causes impetigo?

Answer 5

• Staphylococcus aureus
• streptococcus pyogenes
• or both at the same time

Question 6

What is the most clinically important streptococcal species?

Answer 6

Streptococcus pyogenes also known as group A streptococcus (GAS)

Question 7

Cellulitis

Answer 7

Reddened are of skin caused by S pyogenes

Question 8

Erysipelas

Answer 8

Large intensely inflamed patch of skin on face or legs

Question 9

Erythema nodosum

Answer 9

Inflammation of fat cells of the Hypodermis

Question 10

Necrotizing fasciitis

Answer 10

Flesh eating bacteria
Caused by:
-K.clostridium 
-E.coli
-S.aureus 
-Aeromonas hydrophila

Question 11

Otitis externa

Answer 11

Swimmers ear infection caused by P. Aeruginosa

Question 12

Comedones

Answer 12

Non inflammatory lesions cause by acne

Question 13

Anthrax

Answer 13

Zoonotic disease caused by Bacillus anthracis

Question 14

Bacillus anthracis characteristics

Answer 14

• gram positive
• endospores forming
• facultative anaerobe
• vaccine for a available

Question 15

True or false STDS can cause neonatal conjuntivitis

Answer 15

True

Question 16

Acute bacterial conjunctivitis

Answer 16

Pathogen: H. Influenzae

Inflammation of conjunctiva

Question 17

Bacterial keratitis

Answer 17

Inflammation of cornea from contaminated contact lenses

Pathogen: S. Epidermidis, P. Aeruginosa

Question 18

Neonatal conjunctivitis

Answer 18

Inflammation of conjunctiva of baby comes from a mom w/ STD

Pathogen: C. Trachomatis