Cause of Disease

Pathogens

 Disease is a malfunction of body or mind which has an adverse effect on good health. Disease occurs when an infection leads to recognisable symptoms.

Pathogens:

• gain entry to the host
• colonise the tissue of the host
• resist the defences of the host
• cause damage to the host tissues

Pathogens include:

• Bacteria
• Viruses
• Fungi

Pathogens gen into the body by…