| nosocomial urinary tract infections: secular trends, treatment and economics in a university hospital. | during a 71-month interval 3,024 nosocomial urinary tract infections were identified by prospective surveillance at our hospital. the annual attack rate varied between 2.0 and 3.1 per 100 admissions. gram-negative bacilli caused 74 per cent of all urinary infections and recurrent infections in the hospital accounted for only 1 per cent. the most frequent pathogens were escherichia coli (24 per cent), pseudomonas aeruginosa (8 per cent), streptococcus faecalis (7 per cent), klebsiella pneumoniae ... | 1983 | 6864885 |