45 yrs old Ramlal has intraabdominal sepsis. The causative organism was found to be vancomycin, gentamycin and ampicillin resistant. It grows well in presence of 6.5% NaCI and arginine. Bile esculin hydrolysis is positive. Which of the following is this organism? -
Ans. is 'b' i.e., Enterococcus fecalis Enterococcus ? It belongs to lancefields's group 'FY streptococci Note - Enterococci grow in the presence of bile and hydrolyze esculine ----> bile esculin positive.
Streptococcus agalactae
Enterococcus fecalis
Streptococcus bovis
Streptococcus pneumoniae