Page:United States Statutes at Large Volume 49 Part 2.djvu/1277

Rh 6. When the drinking water on board is considered suspect, it shall be disinfected and, if practicable, emptied out and replaced, after the disinfection of the container, by wholesome water.

In countries in which investigation for detection of carriers of the cholera vibrio is prescribed for the inhabitants, persons arriving by aircraft who wish to remain in the country shall submit to the obligations imposed on the inhabitants under the same circumstances.

Persons producing proof that they have been vaccinated against cholera within less than 6 months and more than 6 days may be subjected to surveillance only.

Proof shall consist of a written certificate signed by a doctor whose signature shall be officially authenticated; or, failing such authentication, the certificate shall be countersigned by either (a) the medical officer attached to a sanitary aerodrome, or (b) a person, other than the person performing the vaccination, who is authorized to witness an application for a passport under the regulations of the country.

The unloading from aircraft of the following fresh foods may be prohibited: Fish, shellfish, fruit, and vegetables coming from a local area infected with cholera.

(a) If there has not been a case of typhus on board, no sanitary measure may be carried out save those prescribed in article 52 of the present convention, for persons who have within 12 days left a local area where exanthematous typhus is epidemic.