This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Microbiology
Cerebrospinal fever is due to 
Select and explain. 
A. Streptococcus pyogenes, B. Staphylococcus aureus, C. Neisseria meningitides, D. None of the above
C: Neisseria meningitides
Answer: C: Neisseria meningitides 
Explanation: (C) Neisseria meningitides # Cerebrospinal meningitis and meningococcal septicaemia are the two main types of meningococcal disease.> Cocci spread from the nasopharynx to the meninges may be directly along the perineural sheath of the olfactory nerve, through the cribriform plate to the subarachnoid space or more probably through the blood stream.> In certain cases, the site of entry may be conjunctiva meningococcal purulent conjunctivitis occur.> On reaching the CNS, a suppurative lesion of meninges is set up, involving the surface of spinal cord, as well as the base and cortex of brain.