21. (1) The person holding office as the Medical Officer of Health under the old Public Health Act immediately before the commencement day is, on and after that day, to hold the office of Chief Health Officer under section 7 of the new Public Health Act subject otherwise to the new Public Health Act.
(2) A delegation under section 6 of the old Public Health Act of a power of the Medical Officer of Health under a regulation under the old Public Health Act, being a delegation in force immediately before the commencement day, continues in force on and after that day as if the delegation had been made under section 8 of the new Public Health Act, subject otherwise to the new Public Health Act.