Bodily fluids, especially those visibly contaminated with blood, are capable of causing disease.

• Bloodborne pathogens can enter your body through a cut in the skin, through your eyes or mouth. Generally intact skin provides a good barrier to germs and viruses, however if you have a cut or opening in the skin, viruses are able to pass through to your bloodstream.
• Bloodborne pathogens may also be spread sexually

The main diseases of concern in the occupational setting are the Hepatitis B and C virus, and the Human Immunodeficiency Virus (HIV).