Comparative study of the in vitro antibacterial activity of ciprofloxacin and thirteen other antimicrobial drugs with respect to recently isolated pathogens.

SummaryThe in vitro antibacterial activity of ciprofloxacin and 13 other antimicrobial drugs was evaluated with respect to 569 pathogens, mainly isolated from urine. Ciprofloxacin was found active in 96.1% of all of the Gram-positive and Gram-negative strains tested, amikacin in 90.6%, ceftazidime in 89.8%, ceftriaxone in 85.3%, piperacillin in 82.7%, tobramycin in 82.6%, gentamicin in 81.5%, aztreonam in 78.3%, nitrofurantoin in 72.6%, cotrimoxazole in 71.6%, cinoxacin in 71.0%, pipemidic acid in 70.6%, nalidixic acid in 66.7%, ampicillin in 50.1%. Ciprofloxacin was found to be the most active of the drugs studied against the bacterial strains which cause urinary, respiratory and other infections.