Strep. Groups A, B, C, G

Background

  • Gram Positive cocci in pairs/chains
  • Streptococcus pyogenes = Group A

Antibiotic Sensitivities[1]

Category Antibiotic Strep. Group A, B, C, G
Penicillins Penicillin G S
Penicillin V S
Methicillin S
Nafcillin/Oxacillin S
Cloxacillin/Diclox. S
Amino-Penicillins AMP/Amox S
Amox-Clav S
AMP-Sulb S
Anti-Pseudomonal Penicillins Ticarcillin S
Ticar-Clav S
Pip-Tazo S
Piperacillin S
Carbapenems Doripenem S
Ertapenem S
Imipenem S
Meropenem S
Aztreonam R
Fluroquinolones Ciprofloxacin I
Ofloxacin I
Pefloxacin R
Levofloxacin S
Moxifloxacin S
Gemifloxacin S
Gatifloxacin S
1st G Cephalo Cefazolin S
2nd G. Cephalo Cefotetan S
Cefoxitin S
Cefuroxime S
3rd/4th G. Cephalo Cefotaxime S
Cefizoxime S
CefTRIAXone S
Ceftaroline S
CefTAZidime S
Cefepime S
Oral 1st G. Cephalo Cefadroxil S
Cephalexin S
Oral 2nd G. Cephalo Cefaclor/Loracarbef S
Cefproxil S
Cefuroxime axetil S
Oral 3rd G. Cephalo Cefixime S
Ceftibuten S
Cefpodox/Cefdinir/Cefditoren S
Aminoglycosides Gentamicin R
Tobramycin R
Amikacin R
Chloramphenicol S
Clindamycin S
Macrolides Erythromycin I
Azithromycin I
Clarithromycin I
Ketolide Telithromycin S
Tetracyclines Doxycycline I
Minocycline S
Glycylcycline Tigecycline S
Daptomycin S
Glyco/Lipoclycopeptides Vancomycin S
Teicoplanin S
Telavancin S
Fusidic Acid I
Trimethoprim S
TMP-SMX X3
Urinary Agents Nitrofurantoin S
Fosfomycin
Other Rifampin S
Metronidazole R
Quinupristin dalfoppristin S
Linezolid S
Colistimethate R

Key

  • S susceptible/sensitive (usually)
  • I intermediate (variably susceptible/resistant)
  • R resistant (or not effective clinically)
  • S+ synergistic with cell wall antibiotics
  • U sensitive for UTI only (non systemic infection)
  • X1 no data
  • X2 active in vitro, but not used clinically
  • X3 active in vitro, but not clinically effective for Group A strep pharyngitis or infections due to E. faecalis
  • X4 active in vitro, but not clinically effective for strep pneumonia

Table Overview

See Also

References

  1. Sanford Guide to Antimicrobial Therapy 2014