Note:  Do not rely on this information. It is very old.

Zymotic Diseases

Zymotic Diseases, the acute specific diseases which are regarded as being caused by the growth and multiplication within the system of a ferment or leaven. The term "zymotic death rate" is applied to the death rate from "seven principle zymotic diseases" (smallpox, measles, scarlet fever, diphtheria, whooping cough, fever, and diarrhoea). The zymotic death rate (mean annual death rate per thousand living) in England and Wales during the ten years (1871-80) was 3.26.