Don't let the cold influenz ya!!

Sona & Shreya

What are viruses?

  • Capsid prom coat
  • Enzyme
  • Some have a lipid membrane

What do they to in a cell?

  • Infect feels to make copies of themselves.
  • Cause diseases in plants,animals and bacteria.


  • The virus attaches to the host cell and injects DNA/RNA into the cell which causes the host cell to make copies of the virus, which breaks free and kills the host cell.


  • Viruses are very small, smaller than the cells they infect.

What they lack:

  • Metabolism
  • Cellular structures
  • Respiration
  • Immobile
  • Reproduce DNA
  • Digestion

All About Influenza

What's the virus?
  • The influenza virus

What are the symptoms?

  • Fever
  • Coughing
  • Sore throat
  • Body aches
  • Headaches

How is it spread?

  • Spread by droplets caused by coughing and sneezing which spreads from person to person

Is it fatal?
  • It can be in elderly and young children. About 3,000 people die every year.

Are there treatments?
  • Usually bed rest and lots of fluids work but doctors may prescribe antiviral medicines like Tamiflu and Relenza

How do you prevent it?
  • You can prevent it with the flu vaccine.
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