1. Health & Disease

2. 17 September 201817 September 201817 September 2018
Communicable Disease

3. Starter What is a pathogen?
Can you name some diseases caused by each type of pathogen?
How are pathogens spread?

4. Pathogens
An organisms that can cause disease
Usually (but not always) micro-organisms
Viruses: a special case – more on this next lesson!
The word pathogen comes from the Greek words pathos (meaning feelings/suffering) and gen (meaning birth)
Suggest why they were given this name

5. Disease Transmission

6. Disease Transmission

7. Communicable diseases and their symptoms
Infection
Cause
Cholera
Bacteria
Symptoms
Diarrhoea

8. Communicable diseases and their symptoms
Infection
Cause
Tuberculosis
Bacteria
Symptoms
Lung damage

9. Leaf loss and bark lesions
Communicable diseases and their symptoms
Infection
Cause
Chalara ash dieback
Fungi
Symptoms
Leaf loss and bark lesions

10. Damage to blood and liver
Communicable diseases and their symptoms
Infection
Cause
Malaria
Protists
Symptoms
Damage to blood and liver

11. Causes haemorrhagic fever
Communicable diseases and their symptoms
Infection
Cause
Ebola
Virus
Symptoms
Causes haemorrhagic fever

12. Destroys white blood cells, leading to the onset of AIDS
Communicable diseases and their symptoms
Infection
Cause
HIV
Virus
Symptoms
Destroys white blood cells, leading to the onset of AIDS

13. Pain urinating and abdominal pain
Communicable diseases and their symptoms
Infection
Cause
Chlamydia
Bacteria
Symptoms
Pain urinating and abdominal pain

14. How are these diseases spread?
Match the disease with its method of transmission
Cholera
Vectors
Tuberculosis
Bodily fluids
Chalara ash dieback
Airborne
Malaria
Direct contact
HIV
Airborne
Chlamydia
Water

15. Task
Draw a table to show the causes, symptoms and transmission of the diseases that we have talked about today
Disease
Pathogen
Host
Symptoms
Method of transmission
Stomach Ulcers
Cholera
Tuberculosis
Chalara Dieback
Malaria
HIV/AIDS
Ebola

16. How can this transmission be reduced or prevented?
In groups discuss possible methods of prevention…
Malaria
Chlamydia
Tuberculosis
Chalara ash dieback
HIV
Cholera