Streptococcus Flashcards
is Streptococcus suis or Streptococcus porcinus zoonotic?
Streptococcus suis
is Streptococcus porcinus or S. suis commensal?
Streptococcus suis
what causes strangles in horses?
Streptococcus equi subspecies equi
what does Streptococcus suis cause in humans?
bronchopneumonia
arthritis
meningitis
septicemia
what Steptococcus species can cause mastitis in cows?
S. agalactiae
S. dysgalactiae
S. uberis
what does Streptococcus look like under a microscope after a gram stain?
gram positive (purple) cocci in chains
where does Streptococcus inhabit?
mucous membranes
upper respiratory tract
+/- commensals
what does Enterococcus look like under a microscope after a gram stain?
gram positive (purple) cocci in pairs or short chains
where is Enterococcus found?
gastrointestinal tract
is Enterococcus commensal?
yes
what are two species of Enterococcus?
Enterococcus faecalis
Enterococcus faecium
is Streptococcus equi subsp equi commensal?
no: highly pathogenic
what extracellular substances do Streptococcus spp produce?
streptolysins
NADase
hyaluronidase
streptodornases
streptolysin
pyrogenic exotoxins
what are some important components of Streptococcus spp extracellular?
peptidoglycan cell wall
capsule: hyaluronic acid
lipoteichoic acid (LTA)
fimbrial antigen M protein
what are some commensal Streptococcus spp?
S. zooepidemicus
S. suis
S. canis
