Who found that people, not fomites, were the primary means of transmission of typhoid fever in his or her investigations in the early 1900s?

Question

Quizplus · Accepted Answer

George Soper was the sanitary engineer who investigated the spread of typhoid fever and identified Mary Mallon, also known as Typhoid Mary, as a carrier, demonstrating that people, not fomites, were the primary means of transmission.

Who Found That People, Not Fomites, Were the Primary Means