2.3 recall the term ‘pathogen’ and know that pathogens may include fungi, bacteria, protoctists and viruses.

Pathogens are harmful microorganisms that can cause diseases.

Pathogens may include fungi, bacteria, protoctists and viruses:

Fungi

Athlete's foot                                                                                         Thrush












Bacteria
Tuberculosis: lung infection

Salmonella: food poisoning

Whooping cough: highly contagious bacterial disease that causes uncontrollable, violent coughing, making it hard for the patient to breath

Viruses

Chicken pox: develops itchy blisters all over the patient's body
Influenza: flu

HIV: leading up to aids 

Measles: highly respiratory disease