Pathogen

Real World Example

Imagine you're planning a picnic, but there's an unexpected rainstorm that ruins the day. Just like the rain disrupts your picnic plans, a pathogen disrupts the normal functioning of your body. In this analogy, the rainstorm is the pathogen, and your picnic represents your body's normal state of health; just as rain can spoil a good day, pathogens like bacteria, viruses, or parasites can spoil your body's health.