To the Editor.—
The specific answers for the points Dr. Rosenthal raises in his letter are as follows:The definition of urinary tract infections used during the prevalence studies is essentially as follows:
This term is applied to those persons having colony counts in urine of greater than 100,000 organisms per milliliter without previous or current manifestations of infection; such asymptomatic urinary tract infections should be classified as nosocomial if an earlier urine culture was negative at a time when the patient was not receiving antibiotics. If a patient is admitted to the hospital with a urinary tract infection, subsequent culture of a new pathogen in numbers greater than 100,000 organisms per milliliter should be regarded as a nosocomial infection.
Other Urinary Tract Infections.—
The onset of clinical signs or symptoms of urinary tract infection (fever, dysuria, costovertebral angle tenderness, suprapubic tenderness, etc) in a hospitalized patient in