6.3 Post-Exposure Management Protocols and Reporting

Occupational Exposure Management and Reporting

A dental exposure incident is urgent, but it is not a reason to improvise treatment. The practice's written Exposure Control Plan should identify whom to call, where the employee will be evaluated after hours, and how the evaluating clinician will obtain the information required by the Occupational Safety and Health Administration (OSHA). The Infection Control Coordinator coordinates the response; a qualified healthcare professional makes clinical testing and prophylaxis decisions.

What Counts as an Exposure Incident

OSHA defines an exposure incident as a specific eye, mouth, other mucous-membrane, non-intact-skin, or parenteral contact with blood or other potentially infectious material that results from an employee's duties. Examples include a contaminated needlestick, a bur laceration, blood or dental-procedure saliva splashed into an eye, and blood contacting dermatitis or an open cut. Blood contacting intact skin is not an exposure incident, although the skin should be washed.

In dental procedures, saliva is treated as other potentially infectious material under OSHA because it can be contaminated with blood. Risk assessment still depends on the route, depth, device, amount of blood, source information, and the exposed worker's vaccination status.

Immediate Actions

1. Stop safely and transfer patient care if necessary.
2. Wash needlesticks and cuts with soap and water. Flush splashes to the nose, mouth, or skin with water, and irrigate eyes with clean water, saline, or sterile irrigant.
3. Do not put bleach, disinfectant, or another caustic chemical into a wound. Do not delay evaluation while trying to make a wound bleed.
4. Report the incident immediately through the practice's exposure pathway.
5. Obtain a confidential medical evaluation as soon as possible.

OSHA requires the employer to make post-exposure evaluation and follow-up available at no cost and at a reasonable time and place. The employer supplies the evaluating professional with the exposure route and circumstances, relevant job duties, source-test results when available, and the employee's hepatitis B vaccination record. The employee receives the professional's limited written opinion; other diagnoses and test results remain confidential.

Source and Baseline Evaluation

Identify and document the source individual when feasible. Source testing must follow state consent law. OSHA specifically addresses testing the source for hepatitis B virus (HBV) and human immunodeficiency virus (HIV); current CDC protocols also use hepatitis C virus (HCV) testing to guide follow-up. A rapid source HIV test can support timely decisions, but indicated HIV PEP is not delayed while results are pending.

The evaluating clinician orders baseline tests appropriate to the exposure. Current protocols commonly include a fourth-generation HIV antigen/antibody test, HCV antibody with reflex nucleic acid testing when positive, and HBV tests chosen from the employee's vaccine-response history and the source's hepatitis B surface antigen status. OSHA allows baseline blood to be collected and preserved for at least 90 days if the employee consents to collection but initially declines HIV testing.

HIV Post-Exposure Prophylaxis: Current 2025 Guidance

The 2025 U.S. Public Health Service occupational HIV guideline treats a possible occupational HIV exposure as an urgent medical concern.

• Start indicated PEP as soon as possible, up to 72 hours after exposure. Do not wait for source results or specialist advice before starting an appropriate initial regimen.
• Prescribe a 28-day, three-drug regimen selected by the treating professional. Preferred options include bictegravir/emtricitabine/tenofovir alafenamide, or dolutegravir plus one tenofovir formulation and emtricitabine or lamivudine. Drug selection accounts for pregnancy, kidney or liver disease, interactions, and source resistance.
• Reevaluate the exposed worker within 72 hours for adherence, tolerability, and new source information.
• Perform the final HIV antigen/antibody combination immunoassay plus HIV nucleic acid test at week 12. Interim testing at weeks 4–6 is recommended when PEP began more than 24 hours after a single exposure or doses were missed.
• Use expert consultation for an unknown source, a source with an undetectable viral load, suspected resistance, or an exposed worker already taking pre-exposure prophylaxis.

Hepatitis B Management

HBV management is determined by the source's HBsAg result and the worker's documented vaccine response. A documented responder with anti-HBs of at least 10 mIU/mL after a complete series needs no HBV post-exposure management. An unvaccinated or incompletely vaccinated worker should begin or complete vaccination; if the source is HBsAg-positive or unknown, hepatitis B immune globulin (HBIG) is also indicated as soon as possible.

A documented nonresponder after two complete vaccine series does not receive another vaccine series. If the source is HBsAg-positive or unknown, CDC recommends two doses of HBIG, with the second dose one month after the first. Because the full matrix has important timing and source-status branches, the evaluator should use the current CDC table rather than memory.

Hepatitis C Testing and Follow-Up

CDC estimates the risk of HCV transmission after a percutaneous exposure to HCV-positive blood at about 0.2%; the reported mucocutaneous risk is 0%. There is no HCV vaccine and CDC does not recommend HCV PEP.

Test the source as soon as possible, preferably with HCV RNA nucleic acid testing or with HCV antibody followed by reflex RNA if positive. Test the exposed worker at baseline with HCV antibody and reflex RNA when positive. If follow-up is indicated, perform HCV RNA at 3–6 weeks and a final HCV antibody test with reflex RNA at 4–6 months. Refer a worker with detectable HCV RNA promptly for evaluation and treatment.

Documentation

Document the device, route, work area, circumstances, first aid, referral time, and corrective actions. The OSHA sharps-injury log records the device type and brand, work area, and explanation of how a percutaneous injury occurred, while protecting the worker's identity. The sharps log requirement applies to employers required to keep OSHA injury-and-illness records; small-employer exemptions must be checked rather than assuming every practice has the same duty.

Employee medical records remain confidential and are retained for the duration of employment plus 30 years. Training records are retained for three years. Clinical test results belong in the confidential medical record, not in a public incident log.