The Importance of a Healthy Carrier of Typhoid Fever

Soper is the first author to describe a healthy carrier of salvanilla typhe in the united states. The person who can carry it never get ill by it, but pass it on to other people. He found that of eight families that had hired mary malan as a cook, members of seven of those families claimed to have contracted typhoid fever,. Even though mary had never shown signs of the ailment.