Microbiology A young female presents with symptoms and signs of meningitis. CSF shows gram-positive bacilli. The most likely causative agent is? A Listeria monocytogenes B Haemophilus influenzae C Pneumococcus D Pseudomonas 💡 Explanation A young female presents with symptoms and signs of meningitis. CSF shows gram-positive bacilli. The most likely causative agent is? ✓ Correct Answer: A. Listeria monocytogenes