Human infection with Rhodococcus equi is apparently rare with most published reports describing the development of lung abscesses in immunocompromised hosts. Of only 18 cases of infection previously recorded, four have recently occurred in patients with the acquired immune deficiency syndrome (AIDS). In Australasia, R. equi has frequently been isolated from soil and infected farm animals yet no human infections have been reported thus far. Three cases of R. equi infection have occurred in New Zealand and, collectively, they cover a wider spectrum of disease than that previously recognised. The natural history of R. equi infections, their clinical features and treatment are described in the light of our recent experience.
Piperacillin was administered in eighteen patients with mixed Infections. Three had osteomyelitis, two had peritonitis, two had gangrenous toes, one had bronchopneumonia, and the other ten had leg ulcers of various types accompanied by cellulitis. In eleven patients one of the infecting organisms was Pseudomonas aeruginosa, and another had Pseudomonas maltophilia. All had appropriate surgical treatment, which in nine patients included skin grafting in the presence of Pseudomonas aeruginosa. All the patients were clinically cured except for one with osteomyelitis who relapsed and was found to have a residual sequestrum. None of the skin grafts failed. In other patient who underwent grafting, cloxacillin was also given because she had a beta‐lactamase‐produclng staphylococcus. The only adverse reaction was thrombophlebitis of the vein used for drug administration in 15 out of 18 patients. One hundred and five other isolates of Pseudomonas aeruginosa were tested in the laboratory against piperacillin and resistance to the drug was found to be rare. It was concluded that piperacillin is a safe drug to use, is effective against a wide range of organisms, and is particularly effective in preventing the destruction of skin grafts by Pseudomonas aeruginosa. It is likely to be ineffective against beta‐lactamase‐produclng staphylococci, and when these are present also, it would be wise to use another drug such as cloxacillin in addition.
99.4% (618/622), respectively. The prevalence rate by endocervical cell culture and the expanded gold standard were 4.5% and 5-1 %, respectively. Additional urethral cell culture testing revealed a further nine patients positive from this site only, giving a 28% (9/32) increase in the number of patients diagnosed for chlamydia, thus giving an overall prevalence of 6.6% (41/622). Conclusions: The IMx Chlamydia assay is an easy and rapid test to perform, it is cost effective, and shows similar performance to endocervical cell culture in the female population studied and is thus an excellent alternative to culture for the diagnosis of C trachomatis. The study also showed the importance of urethral site sampling in these women, as endocervical testing alone will underestimate the prevalence of chlamydial genital infection. (Genitourin Med 1997;73:498-502)
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