Microbiology Which of the following organism is the most common cause of acute meningitis in an AIDS patient? A Streptococcus pneumoniae B Streptococcus agalactiae C Cryptococcus neoformans D Listeria monocytogenes 💡 Explanation Which of the following organism is the most common cause of acute meningitis in an AIDS patient? ✓ Correct Answer: C. Cryptococcus neoformans