## Core Concept
Central nervous system (CNS) infections include a variety of conditions such as meningitis, encephalitis, and brain abscesses. These infections can be caused by bacteria, viruses, fungi, or parasites. Understanding the specific characteristics of each type of infection is crucial for diagnosis and treatment.

## Why the Correct Answer is Right
The correct answer is related to the specifics of CNS infections, but without the actual options provided, we'll discuss general principles. Typically, statements about CNS infections involve their causative agents, clinical presentations, diagnostic methods, and treatments. For instance, bacterial meningitis is often caused by *Neisseria meningitidis*, *Streptococcus pneumoniae*, and *Haemophilus influenzae*, and it presents with fever, headache, and neck stiffness. Viral encephalitis, commonly caused by herpes simplex virus, presents with altered mental status, fever, and sometimes focal neurological deficits.

## Why Each Wrong Option is Incorrect
- **Option A:** Without specifics, we can't directly address why an option is incorrect, but generally, if an option states something that is not universally true for CNS infections (e.g., all CNS infections are caused by viruses), it would be incorrect.
- **Option B:** Similarly, if an option claims a specific symptom or treatment is universally applicable to all CNS infections, it would be incorrect due to the diversity of these conditions.
- **Option C:** This option would be incorrect based on similar reasoning as options A and B.

## Clinical Pearl / High-Yield Fact
A key point to remember is that **empirical antibiotic therapy** should be initiated promptly in suspected bacterial meningitis, even before obtaining culture results, due to the high risk of rapid progression and severe complications. The choice of antibiotics may depend on factors like the patient's age, underlying health conditions, and local antimicrobial resistance patterns.

## Correct Answer Line
**Correct Answer: D.**