TYPHOID FEVER & CONTROL MEASURES Dr . I. Selvaraj Mary Mallon (wearing glasses) photographed with bacteriologist Emma Sherman on North Brother Island in 1931 or 1932, over 15 years after.

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Transcript TYPHOID FEVER & CONTROL MEASURES Dr . I. Selvaraj Mary Mallon (wearing glasses) photographed with bacteriologist Emma Sherman on North Brother Island in 1931 or 1932, over 15 years after.