Classification of pathogenic bacteria - Gram positive Flashcards Preview

Principles of disease JK > Classification of pathogenic bacteria - Gram positive > Flashcards

Flashcards in Classification of pathogenic bacteria - Gram positive Deck (16)
Loading flashcards...
1
Q

Cocci

A

Staphylococci and streptococci

2
Q

Staphylococci

A

Clusters

3
Q

Streptococci

A

Chains

4
Q

Coagulase test positive

A

Staphylococcus aureus - MSSA MRSA

5
Q

Coagulase test negative

A

Skin commensals which can be pathogenic in contact with foreign body/ prostheses

6
Q

Staphylococcus Aureus

A

Commensal carried in nose
Septicaemia, boils
Penicillin resistant ( beta lactamase production)

7
Q

Alpha haemolytic

A

Partial haemolysis
Blood agar green
Streptococcus pneumonia
Veridans streptococci - oral flora cause endocarditis

8
Q

Beta haemolytic

A

Groups A-G identified using Lancefield grouping but A,B + D most scientifically important
Tur blood agar clear and are completely haemolytic

9
Q

Group A

A

Streptococcus pyogenes - necrotising fasciitis and cellulitis

10
Q

Group B

A

Streptococcus agalactiae - neonatal sepsis, genital tract carriage

11
Q

Group D

A

Enterococci and are non haemolytic - UTI

12
Q

Clostridium difficile

A
  • Increased risk with antibiotic use and spreads through spores
  • detected using antigen detection in stool with ELISA
  • pseudomembranous collitis
13
Q

Clostridium perfingens

A

Found in soil and responsible for gas gangrene

14
Q

Clostridium tetani

A

Toxins cause tetanus

15
Q

Clostridium botulinum

A

Botox

16
Q

Bacilus Anthracis

A

Cause anthrax