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Gram + Bacteria

Diagnosis Algorithm

AlgorithmBug
Gram + cocci, catalase +, coagulase + S. aureus
Gram + cocci, catalase +, coagulase -, novobiocin sensitive S. epidermidis
Gram + cocci, catalase +, coagulase -, novobiocin resistance S. saprophyticus
Gram + cocci, catalase -, β hemolytic, bacitracin sensitive S. pyogenes
Gram + cocci, catalase -, β hemolytic, bacitracin resistant S. agalactiae
Gram + cocci, catalase -, α, β, or γ hemolytic, grows in 40% bile (Group D), grows in 6.5% NaCl E. faecalis
Gram + cocci, catalase -, α, β, or γ hemolytic, grows in 40% bile (Group D), susceptible to 6.5% NaCl S. bovis
Gram + cocci, catalase -, α hemolytic, bile-esculin negative, optochin susceptible S. pneumoniae
Gram + cocci, catalase -, α hemolytic, bile-esculin negative, optochin resistant S. mutans, S. intermedius
Gram + bacilli, spore-forming, aerobic, motile B. cereus
Gram + bacilli, spore-forming, aerobic, non-motile B. anthracis
Gram + bacilli, spore-forming, obligate anaerobe, motile C. tetani, C. botulinum, C. difficile
Gram + bacilli, spore-forming, obligate anaerobe, non-motile C. perfringens
Gram + bacilli, non-spore-forming, motile L. monocytogenes
Gram + bacilli, non-spore-forming, non-motile C. diptheriae
Gram + beaded filaments, not acid fast, obligate anaerobe A. israeli
Gram + beaded filaments, weakly acid fast, obligate aerobe N. asteroides, N. brasiliensis
Created by: morgangarrett