<prompt> Blood culture is positive in which infection of staph. aureus-TSSSSSInfective endocarditisImpetigo  <response>: Blood culture is positive when bacteria present in blood, i.e. when there is bacteremia.Infective endocarditis is a complication of staphylococcal aureus bacteremia SAB. Thus blood culture may be positive.Staphylococcal scalded skin syndrome SSS and impetigo do not have bacteremia.In toxic shock syndrome TSS due to staphylococcus aureus, bacteremia is uncommon in contrast, bacteremia is common in streptococcal TSS. 