Comparative efficacy and safety of ceftizoxime, cefotaxime and latamoxef in the treatment of bacterial pneumonia in high risk patients. One hundred and thirty-five patients with bacterial pneumonia who had risk factors (alcoholism, chronic obstructive pulmonary disease, corticosteroid therapy diabetes mellitus, advanced age, solid tumours) were randomly allocated in a double-blind fashion to receive either ceftizoxime (2-4 g every 8 h), cefotaxime (1-2 g every 4 h), or latamoxef (2-4 g every 8 h). Of the 84 patients evaluable for efficacy, clinical cure was achieved in 91%, 85%, and 89% of ceftizoxime- (20/22), cefotaxime-(23/27), and latamoxef-treated (31/35) patients, respectively. Adverse reactions occurred in one of 45 ceftizoxime-treated patients, one of 43 cefotaxime-treated patients