Health & Disease

17 September 201817 September 201817 September 2018 Communicable Disease

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

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

Disease Transmission

Disease Transmission

Communicable diseases and their symptoms Infection Cause Cholera Bacteria Symptoms Diarrhoea

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

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

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

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

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

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

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

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

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