Section 228I (1) does not apply to the disclosure of confidential information by a relevant person if—
(a) the disclosure is to an employee of the department or a person approved by the chief executive who is contracted by the department to analyse, monitor or evaluate public health; and
(b) the disclosure and receipt of the confidential information is for analysing, monitoring or evaluating public health; and
(c) the employee of the department or other person is authorised in writing by the chief executive to receive the confidential information.