The Public Health (Aircraft) Regulations 1979

30.—(1) Where these regulations permit a medical officer to place a person under surveillance, the period of such surveillance shall not exceed such of the following periods as may be appropriate:—

(a) in respect of plague, six days;

(b) in respect of cholera, five days;

(c) in respect of yellow fever, six days;

(d) in respect of smallpox, fourteen days;

(e) in respect of lassa fever, viral haemorrhagic fever or marburg disease, twenty-one days.

(2) Where a person has been so placed under surveillance for plague, cholera, smallpox, lassa fever, viral haemorrhagic fever or marburg disease under regulation 20 by reasons of his having come from an infected area, the period shall be reckoned from the date of his leaving the infected area.

(3) When a person has been so placed under surveillance pursuant to the additional measures, the period shall be reckoned in the manner therein specified.