Classification and Identification of Streptococci Streptococci are gram-positive facultatively anaerobic, catalase-negative coccoid bacteria that grow in chains and colonize the skin and mucous membranes. When grown on blood agar plates, they may cause complete (β), incomplete (α), or no (γ)…
Revised December, 2019 Streptococcus pyogenes (group A Streptococcus; [GAS]) is one of the most important bacterial pathogens of humans. This ubiquitous organism is the most frequent bacterial cause of acute pharyngitis, and it also gives rise to a variety of…
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Abstract This chapter discusses those soft-tissue infections that are truly life threatening. As such, early clinical recognition is the most important aspect of their clinical management. Staphylococcal and streptococcal toxic shock syndromes (referred to here as StaphTSS and StrepTSS, respectively)…
Abstract Localized purulent infections of the skin are extremely common in all parts to the world, in all age groups, and in both sexes. Staphylococcus aureus is the single most common cause of these infections; most are minor, requiring only…
Abstract Pathologically, cellulitis is defined as a diffuse area of soft tissue infection characterized by leukocytic infiltration of the dermis, capillary dilatation, and proliferation of bacteria. Clinically, cellulitis is recognized as an acute infection of the skin characterized by localized…
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You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here