Communicable disease

• Salmonella and Gonorrhea are infections caused by bacteria
• Gonorrhoea is spread through contact mainly intercourse. Salmonella is spread through contaminated food.
• Virus - Live in cells and self replicate until they burst.
• Protists- parasites live in humans and damage healthy cells.
• Bacteria- multiply quickly and produce toxins
• Fungi - grow and penetrate human skin causing disease.
• Pathogens can be spread by

  
  

  - Water

  - Air

  - Direct Contact
• Viral Diseases

  
  

  - Measles

  - HIV

  - Tobacco Mosaic Virus(TMV)
• Tobacco Mosaic Virus(TMV) affects plants.

  
  

  - Discoloured leaves (affects

  photosynthesis)

  - Affects growth
• HIV is spread through sexual contact.

  
  

  - Flu symptoms

  - Attacks immune system

  - Further escalates to AIDS

  - Weak Immune system means more disease.
• PREVENTING HIV

  
  

  - Blood Screening

  - No breast feeding
• PREVENTING TOBACCO MOSAIC VIRUS

  
  

  - Pest control
• MEASLES

  
  

  - Spread by Cough or sneeze droplets

  - Cause Fever or rash

  - Spread through AIR

  - Can lead to pneumonia- blindness
• PREVENTING MEASLES

  
  

  - Vaccinations when young.
• MALARIA

  
  

  - Fever symptoms

  - Spread by protist

  - Mosquito is vector

  - Mosquito pick up malaria and pass it to another animals blood.

  - Prevented by mosquito nets
• PREVENTING SALMONELLA

  
  

  - Vaccinating poultry like chicken.
• measles and HIV are both caused by viruses
• Bacteria produces toxins
• Viruses make Cells burst
• Use condoms to prevent ghonnorea
• What can cause AIDS?

  
  

  HIV
• Rose Black spot is a type of fungal disease