The history of antimalarials

Abstract

In the city of Lima, capital of Peru, the wife of the Viceroy, at that time the Count of Cinchon fell sick... Her illness was tertian fever... The rumour of her illness... became known by the people in the city, spread to neighboring places and reached Loxa. I believe since then thirty or forty years have passed. A Spaniard, the prefect in that place was told of the illness of the Countess, and thought to inform by letter her husband the Viceroy ... that he had a secret remedy he could recommend without hesitation ... she accepted at once ... and once taken, like something miraculous, she was cured to the amazement of all.

Sebastiano Bado, in Anastasis corticis Peruviae seu Chinae Chinae defensio (1663), pp. 20–21