Epstein Barr virus is associated with :
**Core Concept**
Epstein Barr virus (EBV) is a member of the herpesvirus family, known to cause infectious mononucleosis, also known as glandular fever. EBV is a significant public health concern due to its association with various malignancies and autoimmune diseases.
**Why the Correct Answer is Right**
EBV is closely linked with the development of Burkitt lymphoma, a type of non-Hodgkin lymphoma, particularly in African children. The virus infects B lymphocytes, leading to the proliferation of these cells, which can result in the formation of tumors. The EBV-encoded latent membrane protein 1 (LMP1) plays a crucial role in the oncogenic process by mimicking the CD40 receptor, promoting cell survival, and inhibiting apoptosis. Additionally, EBV is associated with Hodgkin lymphoma, nasopharyngeal carcinoma, and gastric carcinoma.
**Why Each Wrong Option is Incorrect**
**Option A:** EBV is not primarily associated with HIV/AIDS. While EBV can co-infect individuals with HIV, the virus is not a direct cause of immunodeficiency.
**Option B:** Cytomegalovirus (CMV) is another member of the herpesvirus family and can cause similar symptoms to EBV, but it is not as closely linked to malignancies.
**Option C:** Hepatitis B virus (HBV) is a major public health concern due to its association with hepatocellular carcinoma, but it is not directly linked to EBV.
**Clinical Pearl / High-Yield Fact**
The EBV-encoded LMP1 protein is a key oncogene in the pathogenesis of Burkitt lymphoma, and its expression can be used as a diagnostic marker for this malignancy.
**Correct Answer:** B.