Gram positive
- Streptococci group A/B/C/G
- Streptococcus pneumoniae
- Streptococcus anginosus group
- Enterococcus faecalis
- Listeria monocytogenes
Gram negative
- Neiserria meningitidis
- Pasturella multocida
Anaerobic
- Actinomyces
- Prevotella melaninogenica
- Clostridia
- Peptostreptococci