Ever since Giacomo Pylarini, a physician working in the Ottoman Empire, sent a report to the Royal Society in 1701 that Turkish women believed pus from a smallpox survivor could induce immunity in a healthy person – and was dismissed as a dangerous quack – inoculation has been as much an art as a science.
Matt Ridley
Temper your excitement about the Covid vaccine

Comments
Don't miss out
Join the conversation with other Spectator readers. Subscribe to leave a comment.
UNLOCK ACCESSAlready a subscriber? Log in