Clarithromycin

Predictable Activity

Arcanobacterium haemolyticum
Bartonella spp
Bordetella pertussis
Borrelia burgdorferi
Chlamydia spp
Coxiella burnetii
Haemophilus ducreyi
Legionella spp
Leptospira spp
Moraxella catarrhalis
Mycobacterium avium intracellulare (MAI) complex
Pasteurella spp
Rickettsia rickettsii
Trueperella spp
Ureaplasma urealyticum

Unpredictable Activity

Anaerobic Gram positive cocci/bacilli
Actinobaculum spp
Actinotignum spp
ß-haemolytic Streptococci (Group A,B,C,G)
Bacillus spp
Campylobacter spp
Coagulase negative Staphylococci (CoNS)
Corynebacterium spp
Cutibacterium acnes
Haemophilus influenzae
Haemophilus parainfluenzae
Helicobacter pylori
Lactobacillus spp

Mycobacterium spp (other than MAI complex)

Mycoplasma hominis (new name Metamycoplasma hominis)
Mycoplasma pneumoniae (new name Mycoplasmoides pneumoniae)

Neisseria meningitidis
Neisseria gonorrhoeae
Nocardia spp
Staphylococcus aureus (MSSA)
Staphylococcus lugdunensis
Streptococcus pneumoniae
Vibrio spp
Viridans group Streptococci

No/Insufficient Activity

Acinetobacter spp
Aerobic Gram negative bacilli – nonfermenters
Anaerobic Gram negative bacilli
Burkholderia spp
Corynebacterium jeikeium
Enterobacterales
Enterococcus spp
Lactobacillus spp
Listeria monocytogenes
Pseudomonas aeruginosa
Pseudomonas spp
Staphylococcus aureus (MRSA)
Stenotrophomonas maltophilia