Every physician who treats women is plagued with cases of resistant and recurrent trichomoniasis. The factors responsible for the resistance to therapy and the recurrences after successful treatments are not always clear. Perhaps if we could find the few missing links in the etiology and the life cyle of the Trichomonas, our understanding would be more complete. My colleagues and I believe that trichomoniasis is commoner in women than in men and that the infection is frequently transmitted by sexual intercourse. The disease may be asymptomatic, and both men and women can be carriers. Exacerbations could be precipitated in part by a change in the accompanying bacterial flora.
Of the vaginal discharges in women, 50% harbor Trichomonas vaginalis. Recent reports on nonspecific male infections harboring Trichomonas reveal incidences of 12% to 15% (Durel and associates, Allison, Feo, and others). At times, the Trichomonas organisms are difficult to find and can