Antiseptic: substance that destroys/stops growth of micro-organism on human tissue(example: skin).

Blood-Born Pathogens(BBP's): virus/es found in blood that produce an infection(example: Human Immunodeficiency Virus{HIV}, Hepatitis C Virus{HCV}).

Carrier: person who is found to be positive for cultures of an organism at one or more sites of their body. They may not show any signs/symptoms of the infection. 

Micro-Organism: a organism that is microscopic; known as a germ, that causes a human infection. An example would be bacteria, fungal or a virus.

Disinfection: a process using a substance that destroys/kills some of(not all) micro-organisms on a object/surface.

Disinfectant: chemical agent that has a drug identification number(DIN), that is used on non-living components to kill micro-organisms.

Germicide: a chemical that destroys micro-organisms on living tissue(antiseptic) or environmental surfaces(disinfectant). Any product containing the suffix "cide" is an indication that it destroys micro-organisms. An example is fungicide, sporicide, or virucide.

Precautions: interventions used to reduce transmitting micro-organisms from one client to another, one client to health provider, and heath care provider to client. Precautions can be by using personal protective equipment.

Personal Protective Equipment(PPE): specialized clothing/equipment worn by a health care provider to protect themselves or clients from transmitting infectious organisms from one person to another, Example: gloves, masks, eyewear, and gowns.

Exposed: contact with a person/item that transfers a micro-organism/s directly/indirectly from one person to another.