Gram positives: almost all Gram-positive microorganisms
Methicillin-resistant S. aureus (MRSA)
Methicillin-sensitive S. aureus (MSSA)
Coagulase negative Staphylococcus
Streptococci group A/B/C/G (Beta-hemolytic streptococci)
Streptococcus pneumoniae
Enterococcus faecalis
Enterococcus faecium
Bacillus
Gram negatives:
Anaerobes:
Actinomyces
Clostridia including C. difficile
Peptostreptococcus