**Question:** All are true about pyogenic meningitis except -

A. Pyogenic meningitis is a severe neurological infection caused by bacteria.
B. The most common causative agent is Streptococcus pneumoniae.
C. The infection primarily affects infants and young children.
D. Treatment involves a combination of antibiotics and supportive care.

**Core Concept:** Pyogenic meningitis is a life-threatening neurological infection caused by bacteria. The infection primarily affects infants and young children, making up around 70% of cases. Diagnosis is typically confirmed through bacterial culture from cerebrospinal fluid (CSF) samples. Pyogenic meningitis is characterized by the presence of bacteria in the CSF, leading to inflammation and damage to the protective membranes surrounding the brain and spinal cord.

**Why the Correct Answer is Right:** Option A, B, and D are all true statements about pyogenic meningitis, which is a severe infection caused by bacteria. The infection typically affects infants and young children, and appropriate treatment involves a combination of antibiotics and supportive care.

**Why Each Wrong Option is Incorrect:** Option C is incorrect because the infection can affect individuals of all age groups, not just infants and young children. The causative agents can vary, but the basic pathophysiology remains the same. Option A's reference to "causative agents" is also correct, as various bacteria can cause pyogenic meningitis. Option D is correct regarding treatment, but Option C focuses on a specific aspect of the disease that is not unique to pyogenic meningitis.

**Why Option B is Incorrect:** Option B refers to "Streptococcus pneumoniae", which is a common causative agent of pyogenic meningitis. However, this statement is incorrect because pyogenic meningitis can be caused by various bacteria, not just Streptococcus pneumoniae. The statement assumes a narrow range of causative agents, whereas the correct answer highlights the pathogenicity of the infection regardless of the specific causative agent.

**Clinical Pearl:** Meningitis is a severe neurological condition that should be promptly recognized and treated due to its potential for severe complications and high mortality rates. A thorough understanding of the disease and its various causative agents is crucial for early diagnosis and appropriate treatment.