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
Answer is A. Listeria monocytogens are gram-positive bacilli.Haemophilus influenzae and Pseudomonas are Gram negative.Pneumococcus is capsulated gram-positive cocci in pairs.