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Staphylococcus Aureus and Toxic Shock Syndrome |

Genetic Studies on Staphylococcal Strains from Patients with Toxic Shock Syndrome

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▸Requests for reprints should be addressed to Barry N. Kreiswirth; Public Health Research Institute; 455 First Avenue; New York, NY 10016.

New York, New York; Minneapolis, Minnesota; and Madison, Wisconsin

© 1982 American College of PhysiciansAmerican College of Physicians

Ann Intern Med. 1982;96(6_Part_2):974-977. doi:10.7326/0003-4819-96-6-974
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Thirteen isolates of Staphylococcus aureus that produce the toxic shock syndrome exotoxin were screened to identify and characterize this specific determinant and understand its role in pathogenicity. These stains belong to phage group 1, are sensitive to phage 29, and are similar with respect to their resistance to cadmium, arsenate, and penicillin. These three resistances, commonly found on plasmids in many strains of S. aureus, were not plasmid-associated in 13 toxic shock strains. The cadmium and arsenate resistances were cotransferred both in transduction and in protoplast fusion; penicillin resistance was unlinked. The toxic syndrome exotoxin gene was not linked to any of these three traits. We suggest that the trait is borne by a special genetic element that acts as a heterologous chromosomal insertion and is independent of the cadmium-arsenate linkage group or the penicillinase determinant. The genetic properties of extracellular proteins in S. aureus are reviewed as possible models for the acquisition or expression of this toxic shock antigen.





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