M 46
The following table shows the principal bodies engaged in vaccinating and the number of operations performed by each :-
The Public Vaccinators 69,312 The Government Hospitals 5,339 Maternity and Infant Welfare Centres 163 The Chinese Public Dispensaries 61,728 The St. John Ambulance Brigade 409,308 Total 545,850160. From the above it will be seen that the St. John Ambulance Brigade and the Chinese Public Dispensaries rendered most valuable assistance in the attempt to control small-pox by vaccination.
161. Apart from vaccination little was done to prevent the spread of small-pox. At a maximum not more than 25 per cent. of the cases were discovered during life and of these the great majority entered the Tung Wah Infectious Diseases Hospital where they were treated by herbalists and where the precautions against dissemination were far from satisfactory.
## PREVENTIVE MEASURES AGAINST CHOLERA, DYSENTERY, ENTERIC, ETC.
162. The measures which may be taken to prevent the spread of bowel diseases are those which prevent dissemination by water, by food and by flies. The Hong Kong public water, though subject to certain risks of contamination at some of its several sources, is filtered and chlorinated and when it reaches the consumer it is of a high grade of purity.
163. The measures taken to preserve the wholesomeness of foods for sale and under preparation for sale are still far from satisfactory.
164. With regard to flies Hong Kong is comparatively free from these pests; the same cannot be said for New Kowloon within a mile of the refuse dump.
## Preventive Measures Against Tuberculosis.
165. The measures taken against Tuberculosis were:-
(a) The periodical general cleansing of premises.
(b) Action to prevent the erection of unauthorised cubicles especially those which have defects in the matter of lighting, air space and ventilation.
(c) Action by the Building Authority to ensure the erection of houses having a proper supply of lighting and ventilation.