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This Concept Map, created with IHMC CmapTools, has information related to: LAB 14 - streptococcus enterococcus infections, divided into 19 different serologic groups based on carbohydrate antigens in their cell wall examples Lancefield serologic groups A, B, C, D, and F infect humans., viridans streptococci infections bacterial endocarditis, bacteremia, deep wound infections, dental abscesses, and abscesses of internal organs, blood agar contains 5% sheep red blood cells to detect hemolysis (lysis of RBCs), group B beta streptococcus (GBS) Streptococcus agalactiae infections an estimated 0.5-1.0% of neonates colonized will develop pneumonia, septicemia, and/or meningitis, Streptococci: Gram-positive cocci, typically occurring in pairs and chains of varying length when grown in a liquid medium, and often occurring singly, in pairs, short chains, and clusters when taken from an agar culture. genera The genus Enterococcus., usually clinically classified based on their hemolytic properties on blood agar and by their serologic groups hemolysis on blood agar blood agar, beta hemolysis appearance A clear, red blood cell-free zone surrounding the colony, where a complete lysis of the red blood cells by the bacterial hemolysins has occurred. This is best seen in subsurface colonies where the agar has been stabbed., viridans streptococci examples Streptococcus mutans, S. sanguis, S. mitis, and S. salivarius (the dominant normal flora in the upper respiratory tract.), group A beta streptococcus (GABS) Streptococcus pyogenes infections infections via the blood: septicemia, osteomyelitis, endocarditis, septic arthritis, and meningitis, double-zone hemolysis appearance Both a beta and an alpha zone of hemolysisis seen surrounding the colony., group A beta streptococcus (GABS) Streptococcus pyogenes infections other respiratory infections: laryngitis, bronchitis, pneumonia, and otitis media (ear infection), 5% sheep red blood cells to detect hemolysis (lysis of RBCs) possible reactions beta hemolysis, 5% sheep red blood cells to detect hemolysis (lysis of RBCs) possible reactions alpha hemolysis, 5% sheep red blood cells to detect hemolysis (lysis of RBCs) possible reactions double-zone hemolysis, group A beta streptococcus (GABS) Streptococcus pyogenes infections invasive group A beta streptococcal infections: necrotizing fasciitis and toxic shock-like syndrome, group A beta streptococcus (GABS) Streptococcus pyogenes infections skin infections: erysipelas, impetigo, and cellulitis, alpha hemolysis appearance Appears as a zone of partial hemolysis surrounding the colony, often accompanied by a greenish discoloration of the agar. This is best seen in subsurface colonies where the agar has been stabbed., gamma reaction appearance No hemolysis and no change in the agar., The genus Streptococcus. examples viridans streptococci, Streptococci: Gram-positive cocci, typically occurring in pairs and chains of varying length when grown in a liquid medium, and often occurring singly, in pairs, short chains, and clusters when taken from an agar culture. genera The genus Streptococcus.
