The can survive fr a long period of time outside a persons body.
If you go to this link, you will be able to see the answer: http://prezi.com/eatd8nhptvh1/?utm_campaign=share&utm_medium=copy&rc=ex0share
I believe the answer is 172,800,000,000 per day (24 hours)
How I Got That Answer:
I calculated 2 million times 60
=120000000 per minute
Then I calculated that times 60 again
=7200000000 per hour
Then I calculated that times 24
=172800000000 per day
Average atomic mass is 87.62 +- 0.01 u
