Gram (+) Cocci Flashcards
This Gram + cocci is catalase positive and coagulase positive
S. aureus
This Gram + cocci is catalase positive, coagulase negative, and sensitive to Novobiocin
S. epidermidis
This Gram + cocci is catalase positive, coagulase negative, and resistant to Novobiocin
S. saprophyticus
What diseases does S. aureus cause?
CUTANEOUS: impetigo, folliculitis, carbuncle
DISSEMINATED: osteomyelitis, septic shock, pneumonia
TOXIN MEDIATED: TSS -> TSST-1, scalded skin syndrome, food poisoning
What diseases does S. epidermidis cause?
infections on foreign bodies (intravascular devices, catheters)
What disease does S. saprophyticus cause?
UTI
This Gram + cocci is catalase negative, alpha-hemolytic, and sensitive to Optochin
S. pneumoniae
What diseases does S. pneumoniae cause?
pneumonia, otitis media, endocarditis, meningitis, sinusitis, bacteremia
This Gram + cocci is catalase negative, alpha-hemolytic, and resistant to Optochin
Viridans streptococcus (S. mutans and S. sanguis)
What diseases do Viridans Strep cause?
S. mutans: dental caries
S. sanguis: endocarditis
This Gram + cocci is catalase negative, beta-hemolytic, and bactracin sensitive
S. pyogenes
What diseases does S. pyogenes cause?
PYOGENIC: pharygntiis, eryspelas, cellulitis, impetigo
TOXIGENIC: scarlet fever, toxic shock, necrotising fasciitis
IMMUNOGENIC: rheumatic fever, glomerulonephritis
This Gram + cocci is catalase negative, beta-hemolytic, and bacitracin resistant
S. agalactiae
What disease does S. agalactiae cause?
neonatal disease
This Gram + cocci is catalase negative and gamma hemolytic
Enterococci
What diseases does Enterococci cause?
bacteremia, intra-abdominal abscess, UTI, endocarditis, peritonitis
Which two Gram + cocci are lancet shaped?
S. pneumoniae and Enterococci
S. pneumoniae is bile ___, while Viridans Strep is bile ____
soluble; insoluble
The PRY test is positive (red) for which Gram + cocci
S. pyogenes
S. aureus turns a tellurite agar ____ while S. epidermidis turns a tellurite agar _____
black; gray
