Epstein Barr virus is associated with:
**Core Concept**
Epstein Barr virus (EBV) is a member of the herpesvirus family, which primarily infects B lymphocytes. EBV is responsible for causing infectious mononucleosis (also known as glandular fever) and has been linked to various cancers, including Burkitt lymphoma and nasopharyngeal carcinoma.
**Why the Correct Answer is Right**
EBV infects B lymphocytes by binding to the CD21 receptor on the surface of these cells. Once inside, the virus hijacks the cell's machinery to replicate and produce new viral particles. This leads to the activation of B cells, resulting in the production of antibodies against EBV antigens, which can cause a range of clinical symptoms. EBV has also been implicated in the development of various cancers due to its ability to integrate into the host genome and disrupt normal cellular function.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because while EBV is associated with infectious mononucleosis, it is not primarily linked to this condition. EBV is more commonly associated with cancer development.
**Option B:** This option is incorrect because while EBV does infect immune cells, it is specifically B lymphocytes that are targeted, not T lymphocytes.
**Option C:** This option is incorrect because while EBV is a herpesvirus, it is not the same virus that causes herpes simplex or varicella-zoster infections.
**Clinical Pearl / High-Yield Fact**
It's worth noting that EBV infection is extremely common, with most adults having been infected at some point in their lives. However, the symptoms of infectious mononucleosis can be severe and require medical attention.
**Correct Answer:** A. Burkitt lymphoma