During the final year of World War I, the Influenza Pandemic absolutely devastated the American home front; it made a return visit to the W.W. II home front during the winter of 1943 - 44, but left nowhere the same devastation.
Meanwhile across the Pacific, the Japanese home front was dealing with an outbreak of tuberculosis, more on this can be read here
Click here to learn more about the American W.W. II home front...
Click here to read about the 1918 - 1920 outbreak of influenza in the United States.