6.2 Staph aureus Flashcards
1
Q
What is the appearance of staph aureus?
A
Gram positive cocci in clusters
2
Q
What is staph aureus positive for?
A
Coagulase and DNase
3
Q
Where does Staph aureus colonise?
A
Anterior nares (axilla and perineum)
4
Q
How does staph aureus differ from coagulase negative species?
A
Can be a colonizer Coagulase and DNase positive Clumping factor >20 adhesion genes > 30 toxin genes
5
Q
What does an adhesion do?
A
coordinates binding of the organism to a host tissue
6
Q
What does an invasin do?
A
enable the organism to invade a host cell
7
Q
What does an impedin do?
A
enables the organism to avoid one or most of the host defences
8
Q
what does a modulin do?
A
induces damage to the host indirectly
