A Widespread Epidemic of Typhoid Fever Traced to a Common Exposure

EACH summer members of a religious group assemble from across the nation to participate in the annual conference at their MonArk Springs, Missouri, encampment. In 1956 representatives began to arrive on Friday, July 20, and before the meeting was over on July 29, over 550 participants originating from 15 states extending from Pennsylvania to California had attended for a few hours to the full ten days. Although diarrhea affected over half the attendants, it did not seriously interfere with the camp meeting. When they returned to their resident states, none were aware of their common exposure to typhoid fever at . . .