Viral, Fungal & Protist

• Viral Disease - Measles

  • spread by droplets from an infected sneeze or cough
  • red skin rash and signs of a fever
  • very serious/ fatal - it can lead to pneumonia or inflammation of brain
  • most people are vaccinated against this disease when they were younger
• Viral Disease - HIV

  • spread by sexual contact or exchanging body fluid
  • flu like symptoms for few fist weeks then calmed down
  • attacks the immune system and if it's badly damaged it can't cope with other infections or cancers
  • controlled with antiretroviral drugs
• Viral Disease - Tobacco Mosaic Virus (TMV)

  • affects many plants
  • causes a mosaic pattern on the leaves of the plant
  • discolouration means the plant can't carry out photosynthesis
• fungal disease - Rose Black Spot

  • fungus that causes black/purple spots which develop on a rose plants
  • it means less photosynthesis can happen
  • spread through water in the wind
  • treat disease using fungicides and by stripping the plant of the affected leaves
• Protist Disease - Malaria

  • takes place in mosquito (vector) - they pick up malaria then infect animals by feeding on them
  • infects by inserting protist into blood vessels
  • repeating episodes of fever (fatal)
  • reduced by stopping mosquitos from breeding
  • protected by using insecticides and mosquito nets