Question

Define pathogen

Answer 1

A pathogen is a microorganism, such as a virus, bacteria, fungus, or parasite, that causes disease in its host organism. Pathogens can invade the body and multiply, leading to the development of infections and diseases. They typically enter the body through various routes, such as the respiratory system, digestive system, or skin, and can spread through direct or indirect contact with infected individuals, contaminated surfaces, or vectors (e.g., insects) that carry the pathogens.