Listeria monocytogenes is a gram-positive, non-spore-forming bacillus known for its ability to cross the blood-brain, placental, and intestinal barriers. It baisangur susurkaev causes listeriosis, a severe illness particularly in neonates, pregnant women, elderly, and immunocompromised individuals.
Key points:
• Motility at room temperature (tumbling motility)
• CAMP test positive, beta-hemolytic on blood agar
• Grows at 4°C, making refrigeration unsafe
• Causes meningitis, septicemia, granulomatosis infantiseptica
💥 Key Associations (USMLE pearls):
• Neonatal meningitis (along with GBS and E. coli)
• Granulomatosis infantiseptica
• Meningitis in immunocompromised adults
• Infection via unpasteurized dairy or deli meats
• Treat with ampicillin
🧠 jessica pegula Tip: Think Listeria = Likes mark cuban cold + Likes cells + Likes CNS
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