Mycoplasma laidlawii was recovered from burns from 13 of 52 patients. In most cases, cocci or bacilli were isolated simultaneously. Mycoplasma species have been isolated from a variety of animals including man, but no reports have been found of the presence of this organism in human burns. The following note deals with the isolation of a Mycoplasma species identified as a strain of M. laidlawii. Original isolation of strains of M. laidlawii was made from sewage (5), but more recently these organisms have been found in bovine genital and respiratory tracts (6), in bulk milk (3), and in the human oral cavity (8). Although M. laidlawii has been regarded as a

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Shepard (1954) isolated mycoplasmas, from the human urogenital tract, which grew as 'tiny' colonies on agar medium and have subsequently been referred to as T-strain mycoplasmas or T-mycoplasmas.Shepard (1956) noted that T-strain mycoplasmas were present in a high proportion of patients with non-gonococcal urethritis, and it was suggested that the organisms played a part in the aetiology of that disease. Because of the increasing prevalence of non-gonococcal urethritis, this hypothesis has since been investigated in several studies, in most of which the incidence of T-strain mycoplasmas was found to be higher in groups of men suffering from nongonococcal urethritis than in comparable but symptom-free control groups.Non-gonococcal urethritis has increased in New Zealand as in other countries, and for this reason it was decided to assess the incidence of T-strain mycoplasmas in groups of men and women reporting at the venereal diseases clinic of the Dunedin Hospital and in some other subjects. PATIENTS AND SUBJECTS EXAMINEDAll were assigned to the groups shown below and in Table I (2) Patients with non-gonococcal urethritis (115) In half, urethral discharge, usually accompanied by dysuria, occurred between 1 and 7 days after the last sexual contact and in the remainder between 8 and 28 days. N. gonorrhoeae were not seen in a direct smear or isolated by culture and antibiotics had not been taken up to the time of the first examination. Ten patients had had two episodes of non-gonococcal urethritis, the second after sexual contact with another partner.(3) Symptom-free subjects with a history of recent sexual contact (29) These men thought that they might have contracted venereal disease and wished to be reassured.(4) Patients who had had non-gonococcal urethritis and had completed a course of tetracycline (17) Tetracycline had been given before culture for T-strain mycoplasmas was made and when symptoms had been relieved or had disappeared.

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