**Core Concept**
The question is testing knowledge of the common causes of aseptic meningitis, specifically viral etiologies. Echo virus is one of the many viruses that can cause aseptic meningitis, but it's not the only one.

**Why the Correct Answer is Right**
The correct answer is likely to be a virus other than Echo virus that can cause aseptic meningitis. This is because there are several viruses that can cause this condition, including Herpes simplex virus (HSV), Mumps virus, and Lymphocytic choriomeningitis virus (LCMV). These viruses can cause inflammation of the meninges, leading to symptoms such as headache, fever, and stiff neck.

**Why Each Wrong Option is Incorrect**
* **Option A:** Echo virus is indeed a cause of aseptic meningitis, so this option is incorrect.
* **Option B:** Not enough information is provided to determine if this option is correct or incorrect, but since Echo virus is the question stem, the answer is likely to be another virus.
* **Option C:** This option might be a distractor, but without knowing the specific virus, it's hard to say for sure.
* **Option D:** Similarly, this option might be a distractor, but without more information, it's hard to determine if it's correct or incorrect.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that viral aseptic meningitis can be caused by several different viruses, and diagnosing the specific cause can be challenging. A thorough history, physical examination, and laboratory tests, including CSF analysis, are often necessary to determine the underlying cause.

**Correct Answer:** B.