(1) If there is a serious public health risk, lack of full scientific certainty should not be used as a reason for postponing measures to prevent, control or abate the risk.
(2) In the application of subsection (1), decision making should be guided by:
(a) a careful evaluation to avoid, where practicable, serious harm to public health; and
(b) an assessment of the consequences of the options available with regard to the risk of each consequence occurring.