The water supply of a community becomes infected by the entrance into it of the excreta (stools and urine) of persons suffering from typhoid fever. Milk (in which typhoid bacilli grow and multiply very rapidly) usually becomes infected by washing out milk cans with water in which these bacilli are present, or from the presence of the bacilli on the hands or persons of those handling milk. Oysters spread the disease when they have been "freshed" in water rich in sewage and containing the typhoid bacillus. Flies, whose bodies have become foul with typhoid excreta, may infect food, milk, etc. Those who take care of typhoid patients may contract the disease if they do not at once disinfect their hands after handling the patient, or clothing or bedding which has become soiled with the discharges. How to Keep From Getting Typhoid Fever.--If the chance of infection is to be reduced to a minimum, all drinking water, concerning the character of which there may be the slightest doubt, should be boiled, and all milk, the handling and care of which is not absolutely beyond suspicion, should be pasteurized or boiled. All food supplies (meat, milk, vegetables, etc.), should be carefully protected against flies, and flies should not be permitted access to the sick-room, the kitchen nor to the room in which the meals are eaten. Bathing at all beaches which have sewers emptying in their immediate vicinity should be strictly avoided. In the majority of cases it is probable that the system must be slightly below par in order that the disease may be contracted; therefore, all indigestible food, green fruit, etc., which may set up indigestion or diarrhea, and so render the system more susceptible to infection, should be avoided. In addition, the elementary rules of cleanliness and hygiene, both as to the house and person, should be most strictly observed. No member of a household in which a case of typhoid fever occurs should take food in any form without previously washing the hands. Typhoid bacilli enter the body only through the mouth. If sufficient care be taken to prevent their entrance, the contraction of the disease can be absolutely prevented. How to Keep From Spreading the Disease.--In order to protect themselves and others in the household, persons caring for or in any way coming into contact with a case of typhoid fever must constantly bear in mind that the secretions and excretions (urine, stools, etc.), of the patient contain typhoid bacilli and are capable of transmitting the disease to others. The person who nurses the patient should not do the cooking for the family. The bedding used by the patient should be washed separately from that used by others. Special dishes, plates, knives, forks, etc., should be kept for the use of the patient alone, and should be washed separately and thoroughly. Particular attention should be paid to immediate disinfection of the stools and urine of the patients until the restoration of health is complete.