Vessel.
Vessels or aircraft when regard- ed as infected.
Vessels or aircraft when regarded as suspected.
Duration of period of incubation.
Conditions
of release
from observ- ation of
2034
are bound, such authorities being notified by the Health Officer of the advent of the persons in question and of the conditions under which they have been given their freedom.
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Vessel includes any ship, boat or other description of vessel used in navigation.
(2) A vessel or aircraft shall be regarded as "infected"-
(a) in respect of plague :-
(i) if it has a case of plague on board;
(ii) if a case of plague broke out on board more than six
days after embarkation of the person affected; or
(iii) if plague-infected rats are found on board.
(b) in respect of cholera :-
(i) if there is a case of cholera on board; or
(ii) if there has been a case on board during the five days
previous to the arrival of the vessel.
(c) in respect of yellow fever:
(i) if there is a case of yellow fever on board; or
(ii) if there was a case on board at the time of departure or during the voyage.
(3) A suspected"
vessel or aircraft shall
(a) in respect of plague :-
be regarded as
(i) if a case of plague broke out on board in the first six days after embarkation of the person affected; or
(ii) if there has been an unusual mortality on board among rats the cause of which has not been determined.
(b) in respect of cholera :-
if there has been a case of cholera on board at the time of departure or during the voyage, but no fresh case during the five days previous to arrival.
(c) in respect of yellow fever :—
(i) if having had no case of yellow fever on board it arrives after a voyage of less than six days from an infected port or from a port in close relation with any endemic centre of yellow fever; or
(ii) if having had no case of yellow fever on board it arrives after a voyage of more than six days and there is reason to believe that it may carry winged stegomyia (Aedes Egypti) from any such port.
3. The period of incubation for the purposes of this Ordinance shall be five days in the case of cholera, six days in the case of plague or yellow fever, twelve days in the case of typhus and fourteen days in the case of smallpox.
4.-(1) Any person liable to be subjected to surveillance shall, as a condition of being exempted from observation, give a written undertaking to a Health Officer to attend and submit to daily examination at such place and at such time as such Health Officer shall appoint. subjected to surveillance.
persons
liable to be
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