Pathogens (New 2024/ 2025 Update)
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Introduction to Bloodborne Pathogens
QUESTION
Lesson Description
Answer:
OSHA published the Bloodborne Pathogens (BBP) Standard (29 CFR 1910.1030) to reduce the
health risk to workers whose duties involve exposure to blood or other potentially infectious
materials.
The Introduction to Bloodborne Pathogens lesson, focuses on bloodborne pathogens and agents
workers may be exposed to in occupational settings. Beginning with a discussion of the
background and history of bloodborne pathogens, the lesson identifies the primary bloodborne
pathogens of concern in occupational settings. The lesson then examines the risks of
occupational exposure to each of the various pathogens. Precautionary and preventative
measures are then covered in detail.
QUESTION
Learning Objectives
At the completion of this lesson, you will be able to:
Answer:
Discuss the background and history of bloodborne pathogens.
Name types of bloodborne pathogens.
Describe how exposures to bloodborne pathogens occur.
, List the factors that can determine overall risk for occupational transmission of, and infection
from, bloodborne pathogens.
Describe the risks of occupational exposure.
List precautions and preventative measures against bloodborne pathogens.
QUESTION
Introduction
Answer:
Blood and other potentially infectious materials (OPIM) have long been recognized as a health
threat to employees who are exposed to these materials by percutaneous contact (penetration of
the skin). Injuries from contaminated needles and other sharps have been associated with an
increased risk of disease from more than 20 infectious agents.
The primary agents of concern in current occupational settings are the human immunodeficiency
virus (HIV), hepatitis B virus (HBV), and hepatitis C virus (HCV).
QUESTION
Lesson Focus
Answer:
This lesson focuses on the following topics:
Background and History
Risks of Occupational Exposure
Precautions and Preventative Measures
QUESTION
Background and History
Answer:
,In September 1986, OSHA was petitioned by various unions representing healthcare employees
to develop an emergency temporary Standard to protect employees from occupational exposure
to bloodborne diseases. The agency decided to pursue the development of a Section 6(b)
Standard and published a proposed rule on May 30, 1989.
The agency also concluded that the risk of contracting the hepatitis B virus (HBV) and human
immunodeficiency virus (HIV) among members of various occupations within the healthcare
sector required an immediate response, and therefore, issued OSHA Instruction CPL 2-2.44,
January 19, 1988. That instruction was superseded by CPL 2-2.44A, August 15, 1988;
subsequently, CPL 2-2.44B was issued on February 27, 1990. The most current compliance
directive, CPL 2-2.69, was issued on November 27, 2001.
To reduce the health risk to workers whose duties involve exposure to blood or other potentially
infectious materials, or OPIM, OSHA promulgated the Bloodborne Pathogens (BBP) Standard
(29 CFR 1910.1030) on December 6, 1991 (56 FR 64004). The provisions of the Standard were
based on the agency's determination that a combination of engineering and work practice
controls, personal protective equipment (PPE), training, medical surveillance, hepatitis B
vaccination, signs and labels, and other requirements would minimize the risk of disease
transmission. The Bloodborne Pathogen Standard was revised in 2001 to reflect language in the
Needlestick Safety and Prevention Act of November 6, 2000.The revised Standard took effect on
April 18, 2001, but it was not enforced until July 18, 2001.
Both the original Bloodborne Pathogen Standard (CFR 1910.1030) and CPL 2-2.44C became
effective on March 6, 1992.
QUESTION
Risks of Occupational Exposure
Answer:
Bloodborne pathogens include but are not limited to:
HBV, which causes hepatitis B
HIV, which causes acquired immunodeficiency syndrome (AIDS)
HCV, which causes hepatitis C
Human T-lymphotrophic virus Type 1
Pathogens causing malaria, syphilis, babesiosis, brucellosis, leptospirosis, arboviral infections,
relapsing fever, Creutzfeldt-Jakob disease, and viral hemorrhagic fever
, Exposures occur in a variety of ways including through needlesticks or cuts from other sharp
instruments contaminated with an infected person's blood or through eye, nose, mouth, or broken
skin contact with a person's blood.
Important factors that can determine the overall risk for occupational transmission of a
bloodborne pathogen include the type and number of blood contacts that an employee has
encountered.
Most exposures do not result in infection. Following a specific exposure, the risk of infection can
vary with factors such as:
The pathogen involved
The type of exposure
The amount of blood/OPIM involved in the exposure
The employer must have an exposure control plan in place for reporting exposures in order to
quickly evaluate the risk of infection, inform employees about treatments available to help
prevent infection, monitor employees for side effects of treatments, and to determine if infection
occurs. This can involve testing the employee's blood and that of the source person, and offering
appropriate post exposure treatment.
It is important to know the risks of infection for the various types of bloodborne pathogens to
which you may be exposed.
HBV -
Workers who have received hepatitis B vaccine and have developed immunity to the virus are at
virtually no risk for infection. For an unvaccinated person, the risk from a single needlestick or a
cut exposure to HBV-infected blood ranges from 6-to-30 percent and dep
QUESTION
Precautions and Preventative Measures
Answer:
Many needlesticks and other cuts can be prevented by:
Using safer techniques (for example, self-sheathing needles--not recapping needles with two
hands)
Disposing of used needles in appropriate sharps disposal containers