Cefixime

Predictable Activity

ß-haemolytic Streptococci (Group A,B,C,G)
Citrobacter koseri
Escherichia coli
Haemophilus influenzae
Haemophilus parainfluenzae
Klebsiella oxytoca
Klebsiella pneumoniae
Pasteurella spp
Proteus mirabilis
Raoultella spp

Salmonella spp

Unpredictable Activity

Moraxella catarrhalis
Neisseria gonorrhoeae

Shigella spp

Streptococcus pneumoniae (Pen-S) 
Yersinia enterolitica

No/Insufficient Activity

Acinetobacter spp
Actinomyces spp
Aerobic Gram negative bacilli – nonfermenters

Aerococcus spp

Anaerobes (Gram positive and Gram negative)
Bacillus spp
Burkholderia spp
Bordetella spp
Campylobacter spp
Chlamydia 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 (MSSA, MRSA)
Staphylococcus lugdunensis

Staphylococcus saprophyticus

Stenotrophomonas maltophilia

Streptococcus pneumoniae (Pen-I, Pen-R)

Viridans group Streptococci