**Question:** Virus associated with cancer cervix:

A. Human papillomavirus (HPV)
B. Human immunodeficiency virus (HIV)
C. Hepatitis B virus (HBV)
D. Epstein Barr virus (EBV)

**Core Concept:** Human papillomavirus (HPV) is a group of more than 200 related viruses, some of which are associated with various types of cancer. HPV is a double-stranded DNA virus that belongs to the Papillomaviridae family. While most HPV infections are harmless and resolve spontaneously, certain types, particularly high-risk HPV types, are linked to cervical cancer development and progression.

**Why the Correct Answer is Right:** HPV is the primary cause of cervical cancer, which is the fourth most common cancer among women globally. HPV causes malignant changes in cervical cells due to its integration into the host genome, leading to uncontrolled cell growth and proliferation. High-risk HPV types, such as HPV 16 and 18, are responsible for approximately 70% of cervical cancers.

**Why Each Wrong Option is Incorrect:**

A. Human immunodeficiency virus (HIV) is a lentivirus that primarily affects the immune system, leading to acquired immune deficiency syndrome (AIDS). While HIV infection increases the risk of various cancers, including cervical cancer, it is not directly associated with the development of cervical cancer.

B. Hepatitis B virus (HBV) is a DNA virus primarily affecting the liver, leading to chronic inflammation and liver diseases. HBV is associated with liver cancer, not cervical cancer.

C. Hepatitis C virus (HCV) is a RNA virus primarily affecting the liver, leading to chronic inflammation and liver diseases. HCV is associated with liver cancer, not cervical cancer.

D. Epstein Barr virus (EBV) is a DNA virus known to cause infectious mononucleosis (mono) and is associated with certain lymphomas and solid tumors. However, EBV is not directly linked to cervical cancer.

**Clinical Pearl:** Regular cervical cancer screening, such as Pap smear or liquid-based cytology, and vaccination against high-risk HPV types can prevent cervical cancer. HPV vaccination is highly recommended for women and men, as the virus can be sexually transmitted and infect both sexes. HPV vaccination is crucial in preventing cervical cancer, especially in high-risk populations like women aged 9-26 years and men aged 9-45 years. HPV vaccination can reduce the incidence of cervical cancer by up to 90% in women and 99% in men.