SUmmARY The Phadebact Gonococcus Test, a coagglutination procedure for the confirmation of identity of presumptive N gonorrhoeae isolates, was evaluated under normal working conditions in a routine diagnostic laboratory and compared with an immunofluorescence technique. Of 166 isolates of N gonorrhoeae from urogenital, rectal, and pharyngeal sites, 164 gave a positive coagglutination reaction, and one of the two negative isolates gave a positive reaction on retesting after subculture. There were no cross-reactions with other organisms tested. This was in contrast with the immunofluorescence technique; with this method, three of 46 isolates of N meningitidis fluoresced brightly, and a further 17 isolates of N meningitidis gave reactions that were difficult to interpret.The coagglutination test is rapid, simple and a more specific alternative to immunofluorescence.
SUMMARY A prospective, randomised, single-blind trial was carried out to compare the efficacy and tolerability of minocycline and ampicillin in the treatment of gonorrhoea in men. One hundred and twenty men were treated with minocycline 300 mg and 121 men with ampicillin 2 g and probenecid 1 g. Cure rates were similar in both groups of patients. There were few side effects.Of 135 strains of Neisseria gonorrhoeae tested to different concentrations of minocycline and penicillin, two were resistant to penicillin (minimum inhibitory concentration (MIC) >0fJ 1 Mg/ml) and seven to minocycline (MIC >1 0 pg/ml).The incidence of PGU was 31 in those patients treated with minocycline and 34% in those treated with ampicillin plus probenecid, the difference not being statistically significant. PGU occurred more often after treatment with minocycline than in previous studies.
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