A chronic infection is a long-lasting infection that persists for months or even years. Unlike acute infections, which come on suddenly and resolve quickly, chronic infections can be caused by various pathogens, including bacteria, viruses, and fungi. These infections often lead to ongoing symptoms and can affect a person's overall health. Common examples of chronic infections include HIV, hepatitis B, and tuberculosis. The body may struggle to eliminate the pathogen, leading to a continuous cycle of inflammation and tissue damage. Treatment often requires long-term management to control symptoms and prevent complications.