Artificial induction of immunity is immunization achieved by human efforts in preventive healthcare, as opposed to natural immunity as produced by organisms' immune systems. It makes people immune to
Platypus: monotremes lack placental transfer of immunity
Benjamin Jesty was a farmer at Yetminster and Worth Matravers in Dorset, England, notable for his early experiments in inducing immunity against smallpox using cowpox.
Benjamin Jesty by Michael William Sharp, 1805
Upbury Farm at Yetminster, home to the Jesty family at the time that the pioneering inoculations took place
Blue plaque commemorating Jesty's pioneering work at Upbury Farm at Yetminster.
Graves of Benjamin (left) and Elizabeth (right) Jesty in the churchyard at Worth Matravers, Dorset.