How many types of bacteria do you think you have rooted through.

Question: How many types of bacteria do you think you have rooted through.
- Keywords:
  bacteria,
  discover,
  research
Asked by Jake Butler to Ciarán on 11 Nov 2014.
- Ciarán O'Brien answered on 11 Nov 2014:
  
  It’s hard to say because scientists have only started looking at our gut bacteria pretty recently, and we still haven’t identified all of them.
  
  There are millions of bacteria in just a gram of someone’s poop, and there are hundreds of different species we recognise, so I think it’s safe to say I’ve rooted through a few hundred thousand types of bacteria, anyway.

Question: How many types of bacteria do you think you have rooted through.