Ceftriaxone

Predictable Activity

Actinobaculum spp
Actinotignum spp
Aerococcus spp
Aeromonas spp
Aggregatibacter spp
ß-haemolytic Streptococci (Group A,B,C,G)
Bartonella spp
Borrelia burgdorferi
Brucella spp
Capnocytophaga spp
Citrobacter koseri
Cutibacterium acnes
Haemophilus influenzae
Haemophilus parainfluenzae
Eikenella spp
Escherichia coli
Kingella kingae
Klebsiella oxytoca
Klebsiella pneumoniae
Moraxella catarrhalis
Neisseria spp
Pasteurella spp
Proteus mirabilis
Raoultella spp
Salmonella spp
Shigella spp
Streptococcus pneumoniae (Pen-S, Pen-I)
Vibrio spp
Viridans group Streptococci
Yersinia spp

Unpredictable Activity

Abiotrophia spp
Actinomyces spp
Aerobic Gram negative bacilli – nonfermenters
Campylobacter spp
Clostridium spp
Fusobacterium spp
Granulicatella spp
Leuconostoc spp
Nocardia spp
Pediococcus spp
Porphyromonas spp
Prevotella spp
Staphylococcus aureus (MSSA)
Staphylococcus lugdunensis
Streptococcus pneumoniae (Pen-R)

No/Insufficient Activity

Achromobacter spp
Acinetobacter spp
Alcaligenes spp
Anaerobic Gram negative bacilli
Bacillus spp
Burkholderia spp
Chlamydia spp
Chryseobacterium spp
Citrobacter freundii complex
Corynebacterium spp
Enterobacter spp
Enterobacterales with ESBL or carbapenemase
Enterococcus spp
Hafnia spp
Legionella spp
Listeria monocytogenes
Morganella morganii
Mycoplasma spp
Proteus vulgaris complex
Providencia spp
Pseudomonas aeruginosa
Pseudomonas spp
Serratia spp
Staphylococcus aureus (MRSA)
Stenotrophomonas maltophilia