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Occupational Health Branch

Cal/OSHA Aerosol Transmissible Disease Standards

California passed the first two occupational standards in the nation to prevent worker illness from infectious diseases that can be transmitted by inhaling air that contains viruses, bacteria, or other disease organisms: 1) the Aerosol Transmissible Diseases (ATD) standard, which applies to workplaces at high risk for infectious diseases such as hospitals, clinics, emergency medical services, laboratories, prisons, and homeless shelters; and 2) the ATD Standard – Zoonotic, which protects workers from diseases spread to humans by animals.

Cal/OSHA Aerosol Transmissible Diseases (ATD) Standard (standard without appendices) – Title 8 CCR; Section 5199

ATD Standard Appendix A: Aerosol Transmissible Diseases/Pathogens

ATD Standard Appendix B: Alternate Medical Evaluation Questionnaire

ATD Standard Appendix C-1: Vaccination Declination Statement

ATD Standard Appendix C-2: Seasonal Influenza Vaccination Declination Statement

ATD Standard Appendix D: Aerosol Transmissible Pathogens – Laboratory

ATD Standard Appendix E: Aerosol Transmissible Disease Vaccination

ATD Standard Appendix F: Sample Screening Criteria (if health care provider unavailabl - e)

ATD Standard Appendix G: Information for Respirator Fit Test Screening

Cal/OSHA Aerosol Transmissible Diseases (ATD) Standard – Zoonotic – Title 8 CCR; Section 5199.1

Publications & Reports

NEW! Cal/OSHA  publications on the ATD Standard - factsheet, guide and model programs

Cal/OSHA's Aerosol Transmissible Disease Standards and Local Health Departments – Guidance on the ATD standards developed specifically for Health Officers

Respirator Program Toolkit for Hospitals - Guide and resources for effective respirator use


Respirator Use in Health Care Workplaces - Protecting workers from infectious diseases

Related Links & Resources

Respiratory protection resources - general

Respiratory protection resources - health care

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