Working around others or in any public place
Answer: the antigens identify the foreign invader
Keep your feet planted firmly in the stirrups and slightly extend your legs so that you are putting pressure on the stirrups like you are going to stand up.
It just means personal information cannot be released or shared without patient consent
Size, cost, and safety are things to consider.
"Cleaning can be difficult" is not a sufficient reason to not buy something. It can be a factor, but everything else is to be taken with much more consideration.
I hope this helps!
~kaikers