Fortunately for the initial enthusiasm with which a campaign for the prevention of tuberculosis may be undertaken by any community, there is no difference of opinion as to what the chief task may be. It is the education of the public with regard to a few simple facts. The accomplishment of that task, however, is one which calls for all the ingenuity and skill that expert knowledge can furnish or specific experience can teach.
The organized crusade now under way against this disease is rapidly uncovering the conditions which constitute its stronghold and, while opening up innumerable lines of promising attack, is also making more and more clear the baffling complexity of the work in which we are engaged.
We may start, I presume, with the general proposition that tuberculosis is infectious, that it is preventable and that in its early stages it is curable. It is its preventability which