Cocci Flashcards
Is group A Strep gram - or gram +
Gram +
What type of hemolysis does Group A strep exhibit?
Beta hemolysis
Is Group A strep sensitive to bacatracin?
Yes
Is there lancefield testing for Group A strep?
Yes
Is Group A strep Catalase negative or positive?
negative
What are the virulence factors of Group A strep?
1- Pili
2-M protein
3- Toxins
How is Group A strep treated?
penicillin and erythromycin
Which bacteria is associated with post steptococcal infections?
Group A strep
What is an example of Group B strep?
S. agalactinae
What are the lab properties of Group B strep?
Gram + Catalase negative beta hemolytic resistant to bacitracin lancefield stereotyping
What is the major diagnostic difference between Group A strep and Group B strep?
Group A is susceptible to bacitracin and Group B isnt
What bacteria is the CAMP test used for?
group B strep and S. aureaus synergy
What type of bacteria do females carry in their GU track?
Group B strep
How are women with GU group B strep treated?
With penicillin before the baby is born
What are the virulence factors of group B strep?
capsule that prevents phagocytosis
What are the lab properties of S. Pneumonia?
Gram + Catalase negative alpha hemolytic bile/optochin sensitive no lancefield stereotyping
What is the virulence factor of S. pneumonia?
capsule
How is s. Pneumonia treated and prevented?
Treated by penicillin and cephalosporin. Prevention is polyvalent vaccine
Is S. viridans sensitive to bile/ optochin sensitive or resistant?
resistant
Is S. viridans alpha or beta hemolytic?
alpha
Which bacteria uses sugar metabolizing enzymes as a virulence vactor?
S. viridans
Where is S. viridans typically found?
the mouth
What type of bacteria is S. facalis?
enterococci
What are the lab properteis of S. facalis?
Gram +
Catalase neg
Gamma hemolytic
resitant to bile/ optochin
Where is S. facalis usually found?
The colon
Is S. Aureus gram + or gram -?
gram +
Which bacteria is resistant to salt?
S. aureus
What are the virulence factors of S. aureus?
Protein A
Capsule
Coagulase
Toxins
What are S. aureus’ response to catalase, coagulation, and hemolytic?
catalase +, coagulase +, beta hemolytic
What is complicating about the treatment for S. aureus?
If has multi drug resistance on a plasmid
Where is S. epidermidis typically found?
the skin
What are the hemolytic properties of S. saprophyticus?
non hemplytic
What are the lab properties of N. meningitides?
Gram -
Maltose ferment +
multiple serotypes
What are the virulence factors of N. meningitides?
capsule
LPS toxin
Does N. gonhorrhoeae ferment maltose?
no
Which bacteria has pili and LOS as virulence factors?
N. gohnorrheoeae
Where does N.gohnorrhoeae typically infect?
the GU tract
Is peptostreptococcis alpha, beta, or gamma hemolytic?
gamma
How does peptostreptococcis make ATP?
obligate anaerobes
Where is eptostreptococcis found?
the mouth, resp track, GU track, bowl