29 CFR Part 1630, Regulations to Implement the Equal Employment Provisions of the ADA (Title I Regulations with amendments issued through May 2016)

(2) Effect on State or other laws. This part does not preempt, modify, or amend any State, county, or local law, ordinance or regulation applicable to food handling which:

(i) Is in accordance with the list, referred to in paragraph (e)(1) of this section, of infectious or communicable diseases and the modes of transmissibility published by the Secretary of Health and Human Services; and

(ii) Is designed to protect the public health from individuals who pose a significant risk to the health or safety of others, where that risk cannot be eliminated by reasonable accommodation.