Micro| Listeria Monocytogenes
Jan 20, 2023•4 min•Season 3Ep. 7
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Episode description
3.07 Listeria Monocytogenes
Microbiology review for the USMLE Step 1 exam
- Listeria monocytogenes is an intracellular, aerobic, gram-positive rod that can cause foodborne illness
- It can live inside various types of cells, including epithelial cells, macrophages, and monocytes, and spreads from cell to cell through actin polymerization
- It is most commonly found in refrigerated deli meats and unpasteurized dairy products, and can cause gastroenteritis, meningitis, and premature labor/spontaneous abortion in immunocompromised individuals, pregnant women, and older or young individuals
- It is usually treated with ampicillin, but bactrim (trimethoprim and sulfamethoxazole) can be used in cases of ampicillin allergy
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