WEEK 7 Flashcards
What is the family name of Streptococcus?
STREPTOCOCACCEAE
What catalase is Streptococcus?
Catalase (-)
Streptococcus is ______ in media w/ blood (___)
Weak false (+) catalase in media w/ blood (peroxidase activity of hemoglobin)
What is the gram of Streptococcus?
Gram (+) in cocci in pairs and in chains
Gram (+) cocci Streptococcus appear?
More elongated
Gram (+) cocci Streptococcus in chains?
Growth in broth cultures
The Colonies of Streptococcus appear?
Small and transparent
Who created the Lancefield Classification?
Rebecca Lancefield (1930)
Lancefield Classification is ___
C carbohydrate (polysaccharide) in the cell wall
Disease Association of S. pyogens (5)
Rheumatic Fever
Scarlet fever
Pharyngitis
Glomerulonephritis
Pyogenic infections
Disease Association of S. agalactiae (4)
Neonatal sepsis
Meningitis
Pueperal fever
Pyogenic infections
Disease Association of S. dysgalactiae, S. equinus (3)
Pharyngitis
Impetigo
Pyogenic infections
Disease Association of S.bovis group (3)
Endocarditis
UTI’s
Pyogenic infections
Disease Association of S.faecalis, E.faecium (2)
UTI’s
Pyogenic infections
Disease Association of S.pneumoniae (3)
Pneumonia
Meningitis
Pyogenic infections
Anginosus groups, mutans group, mitis group, salivarius group (4)
Endocarditis
Dental caries
Abscesses in various tissue
Pyogenic infections
COMMON TERMS: Group A Streptococcus
S. pyogens
COMMON TERMS: Group B Streptococcus
S.agalactiae
COMMON TERMS: Group C Streptococcus
S.dysgalactiae, S.equi
COMMON TERMS: Nonenterococcus member of viridans streptococci
S.bovis group
COMMON TERMS: Enterococcus
S.faecalis, E.faecium
COMMON TERMS: Pneumococcus
S.pneumoniae
COMMON TERMS: viridans streptococcus
Anginosus groups, mutans group, mitis group, salivarius group
Lancefield Group A,C, F, G, .N, or —
Anginosus groups, mutans group, mitis group, salivarius group
Lancefield Group Antigen D
S.faecalis, E.faecium
Lancefield Group Antigen D
S.bovis group
Lancefield Group Antigen C
S.dysgalactiae, S.equi
Lancefield Group Antigen B (acid stable)
S.agalactiae
Lancefield Group Antigen A
S.pyogens
8 Virulence Factors
- M protein
- Protein F & Lipoteichoic acid
- Hyaluronic acid capsule
- Streptolysis O (SLO) and Streptolysin S
- Deoxyribonuclease (DNase)
- Streptokinase
- Hyaluronidase
- Streptococcal Pyrogenic Exotoxins