viral diseases

• What are viruses considered to be?

  Organisms
• How do viruses reproduce?

  By using another organism's cell machinery
• What happens when a virus reproduces inside a host cell?

  The cell bursts, releasing new viruses
• Why do viruses make us feel ill?

  They damage our bodies during reproduction
• How is the measles virus spread?

  By droplets from coughing or sneezing
• What are the symptoms of measles?

  Red rash and fever
• Why is measles rare in the UK?

  Most people are vaccinated against it
• How is HIV primarily spread?

  Through sexual contact and bodily fluids
• What does HIV stand for?

  Human immunodeficiency virus
• What does HIV do to the immune system?

  It causes a deficient immune system
• What are the initial symptoms of HIV infection?

  Flu-like symptoms such as fever and tiredness
• What happens to the immune system as HIV progresses?

  It becomes weak, leading to unusual infections
• What is AIDS?

  A disease where the immune system can't cope
• How has the treatment for HIV improved?

  With antiretroviral drugs preventing replication
• What is the impact of antiretroviral drugs on HIV patients?

  They can live normal lives with treatment
• What does the tobacco mosaic virus affect?

  Certain plant species like tobacco
• Why is it called the tobacco mosaic virus?

  It causes mosaic patterns on leaves
• What is the effect of tobacco mosaic virus on plants?

  It hinders photosynthesis and growth
• What are the main effects of viral infections on the body?

  • Damage to cells during reproduction
  • Symptoms like fever and fatigue
  • Potential for serious health complications