Which of the following organisms, when isolated in the blood, requires the synergistic activity of penicillin plus an aminoglycoside for appropriate therapy-
Ans. is 'a' i.e., Enterococcus faecalis "Unlike streptococci, enterococci are not reliably killed by penicillin or ampicillin alone. Because of synergistic action of Penicillin and aminoglycoside against enterococci combination therapy is recommended ".
Enterococcus faecalis
Staphylococcus aureus
Str. pneumoniae
Bacteroides fragilis