The causative organism can be best isolated in which of the following conditions.

Staphylococcus aureus can be isolated from a tampon of a patient with toxic shock syndrome. S.aureus strains isolated from patients with toxic shock syndrome produce a toxin called toxic shock syndrome toxin-1 (TSST-1), which can be found in the vagina, on tampons, in wounds or other localized infections, or in the throat but viually never in the bloodstream. Streptococcal antigens cross-reactive with human tissues ; streptococcal antigen Human antigen Disease Hyaluronic acid Synol fluid Reactive ahritis Cell wall M protein Myocardium Acute rheumatic fever Cell wall C carbohydrate Cardiac Valves Acute rheumatic fever peptidiglycan skin antigens Guttate psoriasis Cytoplasmic membrane Glomerular capsular intima Acute glomerulonephritis Ref: Textbook of microbiology; Ananthanarayan and paniker's; 10th Edition; Pg:204