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(iv) Bedding, soiled linen, wearing apparel and other articles, including foodstuffs, which, in the opinion of a Health Officer, have been recently infected, shall be disinfected or destroyed at his discretion.
(v) The parts of the vessel or aircraft which have been occupied by the patients or which are considered by such Health Officer as infected shall be disinfected.
(vi) Unloading of cargo shall be carried out under the supervision of such Health Officer, who will take all measures necessary to prevent the infection of the persons engaged in unloading. They shall be subjected to observation or to surveillance which shall not exceed five days from the time they cease unloading.
(vii) When the drinking water on board is suspected it shall be turned off and emptied out after being disinfected and shall be replaced, after disinfection of the tanks, by a supply of water of good quality.
(viii) Such Health Officer may prohibit the emptying of water ballast which has been taken in at an infected port, unless such water ballast has first been disinfected.
(ix) Such Health Officer may prohibit the emptying or discharge of human dejecta and of waste waters of the ship into the waters of the port unless such dejecta or waste waters have first been disinfected.
Cholera precaution- ary measures în case of suspected vessels and aircraft.
Effect of bacteriolo- gical ex- aminations.
Cholera precaution-
ary measures in case of contact vessels.
Cases clinically cholera to be classed as cholera.
54. Vessels or aircraft suspected of cholera shall be subjected to the measures prescribed under paragraphs (i), (iv), (v), (vii), (viii) and (ix) of the preceding section. The passengers and crew may be subjected to surveillance for a period not exceeding five days from the date of arrival.
55. If any vessel or aircraft has been declared infected or suspected only because of cases on board presenting the clinical features of cholera and if two bacteriological examina- tions made with an interval of not less than 24 hours between them have not revealed the presence of cholera or any other suspicious vibrios, it shall be classed as uninfected.
56. A vessel or aircraft shall be regarded as uninfected if, although arriving from an infected port or having on board persons proceeding from an infected area, there has been no case of cholera either at the time of departure from such infected port, during the voyage, or on arrival. Such vessel or aircraft may be subjected to the measures provided under paragraphs (i), (vii), (viii) and (ix) of section 53. In addition the passengers and crew may be subjected to surveillance during a period which shall not exceed five days from the date of arrival. The crew may be prevented during the same period from leaving the ship or sanitary aerodrome except on duty of which a Health Officer has been notified.
57.-(1) Cases presenting the clinical symptoms of cholera in which no cholera vibrios have been found or in which vibrios not strictly conforming to the character of cholera vibrios have been found shall be subjected to all measures required in the case of cholera.