All blood and body fluids should be treated as if they are potentially infectious.
You cannot tell if a person is infected with a bloodborne disease by their appearance.
The Hep B virus can go undetected in an infected person for years.
People with HIV usually do not show symptoms right away.
If you are involved in any situation involving blood or
other potentially infected materials, make sure to follow all
precautions to avoid getting another persons blood or body wastes on
your skin or mucous membranes.
Standard Precautions are also known as Universal Precautions.