(15)In order to protect public health and the health of pet animals of the species listed in Annex I, this Regulation should provide for the possibility to adopt preventive health measures for diseases and infections other than rabies. Those measures should be based on validated scientific information and applied proportionately to the risk to public or animal health associated with the non-commercial movement of those pet animals likely to be affected by those diseases or infections. The measures should include rules for the categorisation of Member States or parts thereof, procedures under which Member States that require the application of preventive health measures should substantiate the rationale for such measures on a continuous basis, conditions for applying and documenting the preventive health measures and, where appropriate, conditions for derogating from the application of those measures. A list of Member States or parts thereof categorised pursuant to the relevant rules should therefore be set out in an implementing act to be adopted pursuant to this Regulation.