Understanding Blood-Borne Pathogens

Blood-borne pathogens are infectious microorganisms present in blood and certain body fluids that can cause serious disease in humans. The most common include:

• Hepatitis B (HBV)
• Hepatitis C (HCV)
• Human Immunodeficiency Virus (HIV)

These pathogens are transmitted when infected blood or certain body fluids enter another person’s body through broken skin, mucous membranes, or direct bloodstream exposure.

How Blood-Borne Pathogens Are Transmitted

Transmission does not occur through casual contact. Infection requires direct exposure to infected blood or high-risk body fluids.

The most common transmission routes include:

• Needlestick or sharps injuries
• Contact with mucous membranes of the eyes, nose, mouth, or genitals
• Open cuts or broken skin
• Sharing needles or injection equipment
• Sexual contact involving blood exposure
• Mother-to-child transmission during pregnancy or delivery

While fresh blood presents the highest risk, dried blood can still carry infectious viruses for several days. Hepatitis B, Hepatitis C, and HIV can survive on surfaces long enough to create real exposure risks if proper cleaning is not performed.

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How Healthcare and Workplace Exposure Happens

Healthcare and first-responder environments present the highest risk, but exposure can also occur in schools, childcare, custodial services, and public facilities.

Common exposure pathways include:

• Needlestick injuries and sharps punctures
• Contact with blood or body fluids during patient care
• Blood splashes to eyes, nose, or mouth
• Handling contaminated equipment or waste
• Improper disposal of sharps or biohazard materials
• Cleaning blood or bodily fluid spills without protection

Secondary workers such as housekeeping staff, laundry workers, janitors, and waste handlers face risk when sharps or contaminated materials are improperly discarded.

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Universal Precautions

The safest approach is to assume all blood and certain body fluids are potentially infectious. This is known as Universal Precautions.

Core Universal Precaution Principles

1. Continuous Training
Employers must provide ongoing training on blood-borne pathogens, exposure prevention, and response procedures. Workers should understand:

• What blood-borne pathogens are
• How exposure occurs
• How to protect themselves
• What to do after an exposure

2. Hand Hygiene
Hand washing is one of the most powerful infection-control tools.

• Wash hands after contact with blood or body fluids
• Use soap and water for at least 20 seconds
• Scrub fingernails and between fingers
• Dry hands completely before contact with others

Alcohol-based hand sanitizer can be used when soap and water are not available, but soap and water are required after visible contamination.

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Personal Protective Equipment (PPE)

Employers must provide PPE when exposure risk exists. This includes:

• Gloves (latex, nitrile, or vinyl)
• Eye protection
• Face masks or shields
• Gowns or aprons

PPE should be worn whenever there is a risk of contact with:

• Blood
• Vomit
• Saliva (in certain procedures)
• Feces
• Open wounds

All PPE must be removed after use and hands washed immediately afterward.

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Cleaning and Disinfecting Contaminated Areas

When blood or body fluids are present:

• Always wear gloves
• Use disposable towels to absorb fluid
• Clean with a bleach solution (1:10 to 1:100) or hospital-approved disinfectant
• Dispose of all cleaning materials in biohazard containers
• Wash hands thoroughly after cleaning

All reusable medical equipment must be washed, disinfected, and dried before reuse.

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Sharps and Biohazard Waste

Sharps and contaminated materials must be handled with extreme care.

• Never recap needles
• Dispose of sharps in approved sharps containers
• Never place sharps in regular trash
• Never overfill sharps containers
• Treat all biological waste as infectious

Workers handling biohazard waste should wear puncture-resistant gloves and avoid direct contact with contents.

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Resuscitation Equipment

To reduce risk during emergency breathing or CPR, workplaces should provide:

• Disposable CPR masks or face shields
• Bag-valve masks (BVMs) when appropriate

These devices protect rescuers from exposure while still allowing lifesaving care.

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Why Blood-Borne Pathogen Training Matters

One exposure can change a life forever. Training reduces:

• Employee injury
• Legal and OSHA risk
• Medical costs
• Workplace infections

Blood-borne pathogen training empowers workers to protect themselves while continuing to provide care.

Updated 2026 In-Pulse CPR