I asked some cancer researchers just that question. They said it would be alright for you to come and find out.
Sometimes they have such a practical way of thinking!
Your appointment is at 10 a.m. on Friday.
Seriously, this kind of stuff always scares the beejesus out of me. Just let something like that get out, and have it be
1) highly contagious, and
2) quickly fatal
and you're looking at a real threat to our species.