Strep and Enterococci

Question 1

Which 2 strep strains are beta hemolytic?

Answer 1

S. pyogenes and S. agalactiae

Question 2

Beta-hemolytic species of staph are more or less pathogenic?

Answer 2

more pathogenic

Question 3

Which Lancefield group is S. pyogenes?

Answer 3

Group A

Question 4

S. pyogenes is PYR positive or negative?

Answer 4

positive

Question 5

Scarlett Fever, acute pharyngitis, impetigo, and rhuematic fever are associated with which strain of Streptococci?

Answer 5

S. pyogenes

Question 6

This normal vaginal flora is a frequent cause of neonatal sepsis.

Answer 6

S. agalactiae

Question 7

The CAMP test is positive for which organism

Answer 7

S. agalctiae

Question 8

This organism presents with alpha-hemolysis and may have concave or umbilicated colonies.

Answer 8

S. pnumoniae

Question 9

This organism is Optochin positive and bile soluble.

Answer 9

S. pneumoniae

Question 10

Which 2 tests differentiate Enterococcus species from Group D Streptococcus?

Answer 10

PYR & 6.5% NaCl negative for D, positive for Enterococcus