Streptococcus Flashcards
Where to find streptococcus
worldwide, skin, muc mem, food , milk
Where the name from
the greek word necklace
What do streptococci look like
cocci with 1 micrometer diameter
they form chains
S are all capsulated T/F
F only S.pyogenes, pneumoniae, equi are
Which S. are capsullated
S.Pyogenes
S.pneumoniae
S.equi
Do S have flagella
No
Which S. have fimbriae
S. pyogenes
S. salivarius
S. sanguinis
What kind of resistance do S have?
Good resistance
How to culture S. (media, O2?, colonies)
enriched media (blood or serum)
fastidious
facultative anaerobs
small translucent colonies
Can you selectively culture S. on Macconkey agar T/F
F on Edwards agar
What’s in Edwards agar
crystal violet, thallium SO4, esculin and blood
C O
both -
O/F test
Fermentative
Name all the streptococcus species (14)
- S.pyogenes
- S.agalactiae
- S.dysgalactiae
- S.uberis
- S.equi
- -ssp. equi
- -ssp zooepiemicus
- S.suis
- S.porcinus
- S.canis
- S.salivarius
- S.sanguinis
- S.mutans
- S.pneumoniae
Which species can only infect Ho
S.pyogenes
Which species only infects horses
S.equi
Scarlet fever is caused by which Bb
S.pyogenes
Rheumatic fever is caused by which Bb
S.pyogenes
Human erysipelas is caused by which Bb
S.pyogenes
Mastitis is caused by which Bb
S. agalactiae
S.dysgalactiae
S.uberis
What does S.equi ssp. equi cause
Strangles in horse
What can S.equi ssp zooepidemicus cause
suppuration, septicaemia, mastitis
Meningitis is caused by which Bb
S. suis in pigs
S. canis causes what in dogs
metritis, septicaemia
What does Streptococcus porcinus cause
lymphadenitis, abscesses
