HIV/AIDS in the Workplace

What is HIV and AIDS?

• context The Human Immunodeficiency Virus (HIV) is a virus that infects the immune system. While HIV infection is a medically manageable chronic condition, if left untreated, it can cause a weakened immune system or acquired immune deficiency syndrome (AIDS). AIDS is the most advanced stage of the HIV infection and causes the immune system to become vulnerable to other infections. HIV can also be known as "the AIDS virus."
• context The full name for AIDS describes several of the characteristics of the disease.
• context Acquired indicates that it is not an inherited condition.
• context Immune Deficiency indicates that the body's immune system breaks down.
• context Syndrome indicates that the disease results in a variety of health problems.
• context Some individuals may not develop any symptoms after being infected with the HIV virus and may not show symptoms until the symptoms of AIDS appear. It may take 10 years for the initial HIV infection to progress to AIDS if not treated. While there is presently no cure or vaccine for HIV, with proper medical care, HIV can be managed, and a near-normal lifespan can be expected with early treatment.

How does HIV affect the body?

• context The human immune system involves many types of cells that guard against germs that are responsible for most diseases. The immune system's most important guard cells are B-cells and T-cells, which are special white blood cells. B-cells and T-cells cooperate to fight any germ that attacks the human body.
• context B-cells produce particular proteins, called antibodies, that try to neutralize the invading germ. After a person recovers from an infection, these antibodies continue to circulate in the bloodstream, acting as part of the immune system's "memory." Immune system memory explains why a person rarely suffers a second attack from an infectious disease such as measles. If the same germ is encountered again, the antibodies will recognize and neutralize it. T-cells attack the germ directly and try to kill it.
• context Special white blood cells, called T-helper cells, activate B-cells and T-cells to fight infection. When a virus gets into the bloodstream, T-helper cells activate B-cells and T-cells. These then start communicating with each other to develop the proper strategy to fight the virus. But when the body is infected with HIV, this defence does not happen. HIV penetrates T-helper cells and, over time, multiplies. This action eventually kills T-helper cells. Without T-helper cells, activation of B-cells and T-cells does not occur. Without the activation of B-cells and T-cells, the body's immune system cannot function properly. When T-cell counts reach a certain level, and there are HIV antibodies present in the bloodstream, a person is considered to have AIDS.

How is HIV transmitted?

• context HIV is transmitted from an infected person by body fluids such as blood, semen, breast milk, rectal fluids, vaginal fluids or other blood-containing secretions. Transmission occurs when these fluids come in contact with the various mucous membranes of another body, through cuts or openings of the skin, or directly injected into the bloodstream. As a result, anyone who is occupationally (or otherwise) exposed to these body fluids risks contracting the disease. Preventive measures include wearing protective clothing, gowns, gloves, masks and goggles to control the spread of HIV among workers who may be at risk.
• context Unprotected sexual intercourse with infected people poses the single most important risk of infection. HIV can also be passed from one partner into the bloodstream of the other through tiny cuts or scratches.
• context If an individual is struck with an HIV-contaminated needle or sharp object, this contact can also be an opportunity for transmission. Healthcare workers are at high risk for this type of exposure.
• context HIV can be transmitted from an infected mother to her unborn child before or during birth, or through breastfeeding. Studies indicate infection takes place across the placenta.
• context The virus does not spread by hugging, kissing, dancing, or shaking hands. HIV does not spread through the air, water, or insect bites. Casual contact with a person who has HIV does not pose a risk. HIV does not pass through healthy, unbroken skin.

How long does it take to develop the disease?

When HIV is untreated, individuals typically progress through three stages: Stage 1: Acute HIV Infection Stage 2: Chronic HIV Infection Stage 3: Acquired Immunodeficiency Syndrome (AIDS)

• context Have a large amount of HIV in the blood
• context May have flu-like symptoms
• context Also known as asymptomatic HIV infection or clinical latency
• context HIV is still active and continues to reproduce in the body
• context Symptoms may not be present, but transmission is possible
• context Stage 2 may last 10 or more years without treatment, but some individuals develop illnesses faster
• context Individuals have a high viral load and may transmit HIV to others easily
• context The immune system is damaged, and other infections or illnesses may be present
• context With no HIV treatment, individuals with AIDS survive about three years

How is HIV recognized?

• context Doctors use laboratory tests, such as blood or saliva antigen/antibody tests, to confirm HIV infection. These tests determine if particular antibodies that result from contact with the virus are present. The presence of antibodies or HIV markers means the person has been infected with HIV, but no one can predict when and if they will get AIDS-related symptoms. Other types of tests include nucleic acid tests (NATS) that can detect the actual virus in the blood.

Can HIV or AIDS be treated?

• context As yet, there is no cure for HIV or AIDS. Individuals infected with HIV are prescribed medications known as antiretroviral therapy (ART). Treatment involves using a combination of drugs that affect the virus in different ways, such as preventing the protein needed by HIV to make copies of itself, creating faulty versions of the building blocks HIV needs to make copies of itself, etc.

What if there is an actual or suspected exposure to HIV?

• context Post-exposure prophylaxis uses antiretroviral medications to lower the risk of HIV infection after a high-risk exposure. The post-exposure prophylaxis should begin as soon as possible, as it may be less effective if started more than 72 hours after exposure. Health professionals, including an infectious disease specialist, can conduct a clinical assessment and determine if post-exposure prophylaxis is required.

Is HIV and AIDS an occupational concern?

• context Wherever blood contact is possible in the workplace, workers should take precautions to prevent contact with the skin, eyes, or mucous membranes (e.g., mouth).
• context Routine Practices are recommended to prevent the spread of HIV in the workplace. Routine practices are based on the principle that all blood, body fluids, secretions, and excretions (except sweat, non-intact skin, and mucous membranes, unless they contain blood), may contain transmissible infectious agents. Contact prevention includes using protective clothing such as gloves, gowns or aprons, masks, and protective eyewear when dealing with people’s blood and other blood-contaminated body fluids such as semen and vaginal secretions. Except in dentistry (where saliva is likely to be contaminated with blood), routine practices are not necessary for HIV prevention where there is only a possible exposure to saliva.
• context Hand washing after contact with blood, blood-contaminated body fluids and soiled items is also recommended to reduce the risk of infection.

What occupations are at higher risk of exposure to HIV?

The occupational groups listed below may have a risk of exposure to HIV in the workplace. The table that follows suggests preventive measures for these groups. For many situations, using all protective barriers listed in the table is not necessary, but workplaces should make them available in case of emergency response scenarios. Healthcare workers (including paramedics, laboratory workers, post-mortem attendants, etc.)

• context Wash hands.
• context Use gloves.
• context Wear goggles, gowns and masks if splashing of body fluids is expected.
• context Use disposable needles, syringes and devices to reduce contact.
• context Bag and label contaminated linen.
• context Disinfect work surfaces and equipment.
• context Wash hands.
• context Use gloves.
• context Use disposable needles and syringes.
• context Use goggles, gowns, and masks if the creation of blood is expected.
• context Wash hands.
• context Use gloves, gowns, goggles, and masks.
• context Use disposable surgical instruments.
• context Sterilize reusable equipment. Disinfect work surfaces with sodium hypochlorite solution.
• context Wash hands.
• context Use gloves.
• context Keep cleaning equipment in restricted areas.
• context Use disposable devices for mouth-to-mouth resuscitation.
• context Wash hands.
• context Use gloves.
• context Keep cleaning equipment in restricted areas.
• context Wash hands.
• context Use gloves.
• context Wash hands.
• context Use gloves.
• context Fact sheet confirmed current: 2024-09-25