**Core Concept:** Epstein-Barr virus (EBV) is a common human herpesvirus that can cause infectious mononucleosis (IM) and is associated with several types of lymphoproliferative disorders, including Burkitt's lymphoma and nasopharyngeal carcinoma.

**Why the Correct Answer is Right:** EBV infects B-lymphocytes, a type of white blood cell that plays a crucial role in the immune response and B-cell differentiation. When EBV infects B-lymphocytes, it establishes latency, a state where the virus persists within the host without causing immediate symptoms. In latency, EBV expresses a limited number of viral genes that can modulate B-cell function, leading to the development of lymphoproliferative disorders such as Burkitt's lymphoma and nasopharyngeal carcinoma.

**Why Each Wrong Option is Incorrect:**

A. EBV does not infect T-lymphocytes (T cells), which are another type of white blood cell involved in immune response and T-cell differentiation.

B. While EBV can infect other cell types like epithelial cells, these options do not accurately represent the primary target cell for EBV infection.

C. EBV does not primarily infect NK cells (Natural Killer cells), which are involved in cytotoxicity and immune surveillance.

D. EBV infection does not cause acute febrile illness in all infected individuals. Some individuals may remain asymptomatic or develop mild symptoms like those of a common cold.

**Clinical Pearl:** Understanding the target cell for EBV infection and its association with lymphoproliferative disorders is crucial for understanding the pathogenesis of certain cancers and autoimmune diseases. Knowledge of this can help in diagnosis, prognosis, and treatment planning for EBV-related disorders.