Artikel 57

1. States Parties recognize that the IHR and other relevant international agreements should be interpreted so as to be compatible. The provisions of the IHR shall not affect the rights and obligations of any State Party deriving from other international agreements.
2. Subject to paragraph 1 of this Article, nothing in these Regulations shall prevent States Parties having certain interests in common owing to their health, geographical, social or economic conditions, from concluding special treaties or arrangements in order to facilitate the application of these Regulations, and in particular with regard to:
a) the direct and rapid exchange of public health information between neighbouring territories of different States;
b) the health measures to be applied to international coastal traffic and to international traffic in waters within their jurisdiction;
c) the health measures to be applied in contiguous territories of different States at their common frontier;
d) arrangements for carrying affected persons or affected human remains by means of transport specially adapted for the purpose; and
e) deratting, disinsection, disinfection, decontamination or other treatment designed to render goods free of disease-causing agents.
3. Without prejudice to their obligations under these Regulations, States Parties that are members of a regional economic integration organization shall apply in their mutual relations the common rules in force in that regional economic integration organization.