Before revision:  By analyzing city-level cause-specific mortality data from 1922-1940, we find that eliminating typhoid fever infections decreased the risk of death due to non-waterborne diseases such as tuberculosis and pneumonia  .
After revision:  By analyzing city-level cause-specific mortality data from 1922-1940, we find that a decline in typhoid deaths by one per 1,000 people decreased the risk of death due to non-waterborne diseases such as tuberculosis and pneumonia .