high yield anaerobes

Question 1

anaerobes

Answer 1

Anaerobes lack catalase and superoxide dismutase making them susceptible to oxygen damage

Foul smelling infections due to SCFA produced during fermentation

Difficult to culture

Three main ones: Clostridium, Bacteriodes, Actinomyces

Question 2

Bacteriodes fragilis

Answer 2

Gram - bacilli part of normal colonic flora

Virulence factors: Polysaccharide capsule, aerotolerant (bc they encode catalase and dismutase)

Often found in mixed bacterial intrabdominal infections especially with Peptostreptococcus

Grows on bile-esculin agar (medium that inhibits most aerobes and other anaerobes)

Question 3

Clostridium

Answer 3

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