Cefazolin

Predictable Activity

ß-haemolytic Streptococci (Groups A,B,C,G)
Citrobacter koseri
Cutibacterium acnes
Klebsiella pneumoniae
Raoultella spp
Staphylococcus aureus (MSSA)
Staphylococcus lugdunensis
Streptococcus anginosus group
Streptococcus pneumoniae (Pen-S)

Unpredictable Activity

Actinomyces spp
Anaerobic Gram positive bacteria
Escherichia coli
Klebsiella oxytoca
Moraxella catarrhalis
Proteus mirabilis
Streptococcus pneumoniae (Pen-I)
Viridans group Streptococci (other than S. anginosus group)

No/Insufficient Activity

Aerobic Gram negative bacilli – nonfermenters
Anaerobic Gram negative bacilli
Bacillus spp
Bordetella spp
Chlamydia spp
Citrobacter freundii complex

Clostridium spp

Corynebacterium spp
Coryneform bacteria
Eikenella spp
Enterobacter spp
Enterobacterales with ESBL or carbapenemase
Enterococcus spp
Haemophilus influenzae
Haemophilus parainfluenzae
Hafnia spp
Legionella spp
Listeria monocytogenes
Morganella morganii
Mycoplasma spp
Nocardia spp
Pasteurella spp
Proteus vulgaris complex
Providencia spp
Pseudomonas aeruginosa
Pseudomonas spp
Rickettsia spp
Salmonella spp
Serratia spp
Shigella spp
Staphylococcus aureus (MRSA)
Stenotrophomonas maltophilia
Streptococcus pneumoniae (Pen-R)