How often do you find a new virus?

Question: How often do you find a new virus?
- Keywords:
  disease,
  research,
  virus
Asked by to Ian on 18 Mar 2014. This question was also asked by .
- Ian Hands-Portman answered on 18 Mar 2014:
  
  Whenever we going looking for one! – which isn’t that often. The sort of viruses I’m usually looking for are the ones that feed on bacteria, there are more species of those than there are species of anything else so most of them haven’t been discovered. Just by looking where noone else has I can pretty much guarantee new species

Question: How often do you find a new virus?