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Abstract
Previous studies from Seattle, Wash., suggested that strains of Neisseria gonorrhoeae which require arginine, hypoxanthine, and uracil (Arg-Hyx-Ura- auxotype) are unifomly highly susceptible to penicillin G, are relatively resistant to complement-dependent killing by heated, pooled human serum, and are associated with disseminated gonococcal infection. For further study of the epidemiology of these strains and for analysis of the susceptibility to penicillin, serum sensitivity, and the nutritional requirements of gonococcal isolates from other cities, a survey was made of urethral and cervical strains isolated in 1972--1974 from 50 randomly selected pateit-s with uncomplicated gonorrhea from each of nine cities. Arg-Hyx-Ura-strains represented greater than 50% of isolates from Seattle and Des Moines, Iowa, 22% of isolates from Denver, Colo., and Dayton, Ohio, and less than or equal to 12% of the isolates from Boston, Mass., Newark, N.J., Norfork, Va., Miami, Fla., and Oakland, Calif. Arg-Hyx-Ura- strains were recovered from 42% of white and 9% of black patients (P less than 0.001), and clincis with the highest incidences of these strains had the highest proportion of white patients among those with gonorrhea. Arg-Hyx-Ura- strains were all susceptible to less than or equal to 0.125 microgram of penicillin G/ml and were more resistant than strains with other auxotypes to killing by heat-inactivated human serum plus complement (P less than 0.001).
View details for Web of Science ID A1978FM05400005
View details for PubMedID 98600