California OSHA Title 8, Chapter 4, Section 5199 excerpts

A disease or pathogen for which droplet or airborne precautions are required, as listed in Appendix A. ... involve having contact with, or being within exposure range of cases or suspected cases of ATD, are always considered to cause occupational exposure. ... Varicella disease (chickenpox, shingles)/Varicella zoster and Herpes zoster viruses ... ................
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