Most striking results quickly followed.
The diminution in the number of deaths from the terrible scourge was amazing.

In Berlin, during the eight years following 1783, over four thousand children died of the smallpox; while during the eight years following 1814, after vaccination had been largely adopted, out of a larger number of deaths there were but five hundred and thirty-five from this disease.

In Wurtemberg, during the twenty-four years following 1772, one in thirteen of all the children died of smallpox, while during the eleven years after 1822 there died of it only one in sixteen hundred.

In Copenhagen, during twelve years before the introduction of vaccination, fifty-five hundred persons died of smallpox, and during the sixteen years after its introduction only one hundred and fifty-eight persons died of it throughout all Denmark.

In Vienna, where the average yearly mortality from this disease had been over eight hundred, it was steadily and rapidly reduced, until in 1803 it had fallen to less than thirty; and in London, formerly so afflicted by this scourge, out of all her inhabitants there died of it in 1890 but one.