How inoculation against smallpox became all the rage in Russia

The concept of vaccination evolved from 18th-century inoculation practices and many people contributed to the accretion of knowledge. This book focuses on two individuals: the Quaker doctor Thomas Dimsdale, who, from his small Hertfordshire surgery, pioneered a simple smallpox immunisation; and Catherine the Great, who summoned him all the way to St Petersburg to inoculate her and the teenage Grand Duke Paul.