Tuesday, November 8, 2016

Listeria monocytogenes





Facultative anaerobe
Thrives in cold
Transmitted via milk, cheeses
Motile by actin polymerization = "actin rockets"
Tumbling motility
Beta hemolytic (unique among gram negative bacteria)
Can be acquired transvaginally by foetus. Pregnant women shouldn't eat soft cheese
Neonatal meningitis
Facultative anaerobe 
Elderly at risk
Dx: catalase positive (unique among gram-negative bacteria)
Rx: Ampicillin

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