The decline in the death rate from infectious diseases by the end of the 19th century was largely the result of

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The decline in the death rate from infectious diseases by the end of the 19th century was primarily due to preventive measures such as improvements in sanitation, the introduction of vaccines, and public health initiatives, rather than the development of antibiotics or advances in medical treatment, which played a more significant role later on. Antibiotics, for example, were not introduced until the 20th century.

The Decline in the Death Rate from Infectious Diseases by the End