Medicine Which of the following agent is least likely to cause Meningitis in the elderly? A Listeria Monocytogenes B Streptococcus pneumonia C Gram Negative bacteria D Herpes Simplex Virus - 2 (HSV 2) 💡 Explanation Which of the following agent is least likely to cause Meningitis in the elderly? ✓ Correct Answer: D. Herpes Simplex Virus - 2 (HSV 2)