Flashcards in Classification of pathogenic bacteria - Gram positive Deck (16)
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1
Cocci
Staphylococci and streptococci
2
Staphylococci
Clusters
3
Streptococci
Chains
4
Coagulase test positive
Staphylococcus aureus - MSSA MRSA
5
Coagulase test negative
Skin commensals which can be pathogenic in contact with foreign body/ prostheses
6
Staphylococcus Aureus
Commensal carried in nose
Septicaemia, boils
Penicillin resistant ( beta lactamase production)
7
Alpha haemolytic
Partial haemolysis
Blood agar green
Streptococcus pneumonia
Veridans streptococci - oral flora cause endocarditis
8
Beta haemolytic
Groups A-G identified using Lancefield grouping but A,B + D most scientifically important
Tur blood agar clear and are completely haemolytic
9
Group A
Streptococcus pyogenes - necrotising fasciitis and cellulitis
10
Group B
Streptococcus agalactiae - neonatal sepsis, genital tract carriage
11
Group D
Enterococci and are non haemolytic - UTI
12
Clostridium difficile
- Increased risk with antibiotic use and spreads through spores
- detected using antigen detection in stool with ELISA
- pseudomembranous collitis
13
Clostridium perfingens
Found in soil and responsible for gas gangrene
14
Clostridium tetani
Toxins cause tetanus
15
Clostridium botulinum
Botox
16