Section 56.77 - Health and hygiene of personnel(a) No person known to be affected by a communicable or infectious disease shall be permitted to come in contact with the product.(b) Plant personnel coming into contact with the product shall wear clean clothing.32 FR 8232, June 8, 1967. Redesignated at 42 FR 32514, June 27, 1977, and further redesignated at 46 FR 63203, Dec. 31, 1981