Just because it has not so far does not mean to say that it will not now or in the future
Nobody is ever going to be in any danger when medieval plague pits are unearthed.
As it says here:
"However, there is no risk to people's health now because the plague bacteria cannot survive long in the soil, Crossrail says."
This is only a bacterium, not a virus. And, in any case, you need to have someone who has the disease already breathe on you, or you need to be bitten by infected fleas, in order to catch the disease.
Edited by TheLastLazyGun, 16 March 2013 - 01:38 PM.