Microbiology Streptococci fc21b206 Which one of the following organisms is the most frequent cause of acute pyogenic meningitis in adults: A Streptococcus pneumoniae B Neisseria meningitis C Haemophilus influenza D Listeria monocytogenes High-Yield Explanation Ans. (a) Streptococcus pneumoniaeRef: Dhingra 5th ed. /61y 81