To the Editor.
—The interesting article on Hemophilus influenzae in urine by Gabre-Kidan et al1 uncovers the tip of a fairly large iceberg. We also have isolated this organism from urine during the past five years: from three men with prostatitis and from three children with chronic pyelonephritis. These figures compare with several thousand isolations of other organisms that are not detected by overnight aerobic culture. The majority of these isolations have been from women with urethral syndrome; we have demonstrated the relevance of these organisms to this syndrome2 and a search for them is now included in our routine protocol for urine culture from adult women with symptoms (see below).In addition, in a recent study of urine culture from adult men with symptoms3 we isolated fastidious organisms from 140 (24%) of 585 specimens received; 179 specimens (31%) yielded conventional aerobic pathogens. We suspect that the