November 25, 2015



A virus is a small organism that attaches to a cell and causes diseases and infections. A virus is passed from one person to another through physical contact, but it can also be transmitted through the air or through the bite of an insect.

  • A deadly outbreak of the Ebola virus in Liberia caught the attention of the entire world last year.
  • A flu virus can spread easily, so it’s a good idea to get a flu shot as protection from the virus.
  • To protect yourself and others from viruses, it’s important to wash your hands frequently.
  • Disinfectants can kill viruses.

sick manHis stomach flu was caused by a virus.

A virus is also a problem for computers and mobile technology.

  • Donna’s computer has a virus.
  • If you aren’t careful about what you download from the internet, your computer can become infected with a virus.
  • Virus protection is available for your computer.
computer virusvirus eating computer

 A virus tries to get into your computer.

 If a virus finds its way into a computer that is unprotected, it can do a lot of damage to the files on your hard drive.

The word "viral" is often used when describing the sudden popularity of a video, a song, or a website on the internet. In this case, going viral is good.

  • Thomas posted a cat video on YouTube and it went viral.
  • Isabel produced an app that went viral and made over $50,000 on it.
  • If Joe’s website goes viral, he said he would quit his job and focus on producing websites and mobile apps.

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