Question

How disease occur in human ?​

Answer 1

Answer:

Explanation:

Microorganisms capable of causing disease—pathogens—usually enter our bodies through the mouth, eyes, nose, or urogenital openings, or through wounds or bites that breach the skin barrier. Organisms can spread—or be transmitted—by several routes.

Answer 2

Disease, which typically happens in a small proportion of infected people, occurs when the cells in your body are damaged as a result of infection, and signs and symptoms of an illness appear. In response to infection, your immune system springs into action. ... Sometimes they kill cells and tissues outright.