How Pathogens Damage the Body: Mechanisms of Infection

Pathogens can have a variety of mechanisms to harm the host, including:

- Adhesion to host cells: Some pathogens can adhere to the surface of host cells, which allows them to invade the cell and cause damage.

- Invasion of host cells: Some pathogens can invade host cells, where they can replicate and cause damage to the cell.

- Toxin production: Some pathogens can produce toxins that can damage host cells and tissues.

- Immune system evasion: Some pathogens can evade the host immune system, which allows them to cause disease.

- Disruption of host metabolism: Some pathogens can disrupt the host's metabolism, which can lead to disease.

The specific mechanisms by which a pathogen causes disease depend on the type of pathogen and the host.