Article 11

The Organization shall send to all health administrations, as soon as possible and by the means appropriate to the circumstances, all epidemiological and other information which it has received under Articles 3 to 8 inclusive and paragraph (a) of Article 9 as well as information as to the absence of any returns required by Article 9. Communications of an urgent nature shall be sent by telegram, telex or telephone.

Any additional epidemiological data and other information available to the Organization through its surveillance programme shall be made available, when appropriate, to all .health administrations.

The Organization may, with the consent of the government concerned, investigate an outbreak of a disease subject to the Regulations which constitutes a serious threat to neighbouring countries or to international health. Such investigation shall be directed to assist governments to organize appropriate control measures and may include on-the-spot studies by a team.