viruses

• What are viruses?

  Pathogens that live inside cells that are able to replicate themselves quickly. When they burst they damage cells causing sickness.
• What type of pathogen is measles?

  A virus.
• What are the symptoms of measles?

  • Fever
  • Red skin rash
• What type of pathogen is HIV?

  A virus.
• What are the symptoms of HIV?

  • Fever
  • Fatigue
• How can HIV be treated?

  Antiretroviral medication.
• How is HIV usually spread?

  • Sexual contact
  • Exchange of body fluids
• What kind of pathogen is TMV - tobacco mosaic virus?

  A virus.
• What are the symptoms of TMV?

  • Discolouration on leaves
  • Stunted growth
• What are the main viruses to know?

  • Measles
  • HIV
  • TMV
• How does HIV cause AIDS?

  It weakens the immune system and so it cannot treat other infections.
• How can measles be spread?

  • Inhalation of droplets from sneezes/coughs.