What is a Virus

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=7YTOdR-ABKE

What is a virus? How do they spread? Are they all bad? What's the difference between a virus and a disease? • Dr. Joanna Shisler is a Program Director at the NSF, Directorate for Biological Sciences, Division of Integrative and Organismal Systems. A microbiologist with 20 years experience, her primary area of interest is in virology. She is a member of the American Society for Microbiology and the American Society for Virology. She is an editorial board member for the Journal of Virology. • 00:00 Virologist explains viruses • 00:17 What is a virologist? • 01:18 What is a virus? • 02:26 Where do viruses come from? • 03:04 How are diseases and viruses different? • 03:48 Are there good viruses? • 05:14 What is a retrovirus? • 05:34 How can we protect ourselves? • 06:31 Does our body always have viruses? • 07:20 Can we detect new viruses? • 08:25 What is hard about studying viruses?

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