Chlamydia species Mycoplasma species Rickettsia species Legionella species * Activity has been satisfactorily demonstrated in clinical studies. † The efficacy of INVANZ in the treatment of community acquired pneumonia due to penicillin- resistant Streptococcus pneumoniae has not been established. + frequency of acquired resistance > 50% in some Member States # Methicillin-resistant staphylococci (including MRSA) are always resistant to betalactams.