An infection occurs when a microorganism—such as a bacterium, virus, fungus, or parasite—enters the body, establishes itself, and begins to multiply.
Oncogenic Viruses and Chronic Infections:
Certain viruses are known as oncogenic (cancer-causing) viruses. For example:
-Human Papillomavirus (HPV): Certain strains of HPV can lead to cervical cancer, as well as other cancers such as oropharyngeal and anal cancers.
-Hepatitis B Virus (HBV) and Hepatitis C Virus (HCV): These viruses can cause chronic liver infections that may progress to liver cirrhosis and ultimately hepatocellular carcinoma (liver cancer).
-Epstein-Barr Virus (EBV): This virus is linked to several cancers, including Hodgkin lymphoma, Burkitt lymphoma, and nasopharyngeal carcinoma.
-Some infections directly or indirectly weaken the immune system, reducing its ability to detect and eliminate emerging cancer cells.
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