"Phil" wrote in message
ups.com...
snip It was not unusual for the lab to be unable to
grow anything from the hard surface swabs taken in the room.

Colin Bignellsnip

It's not only stuff that grows that can be a problem.... toxins &
pyrogens for instance.

How many people wander around with toxins on their hands at sufficiently
high levels for a transfer from them to an inanimate object, followed by a
transfer from that to another human, followed by a transfer to a patient at
a level that will be a hazard to a patient? If there are any, they probably
won't be wandering around long.

Colin Bignell