Girolamo Fracastoro was an Italian physician who proposed that diseases were caused by small animals, which he called seminaria contagiosa. He believed that these animals could be transmitted from person to person through contact with infected individuals or objects. Fracastoro's theory was a major breakthrough in the understanding of disease, and it laid the foundation for the development of modern microbiology.
Which scientist proposed that diseases were caused by small animals and not spirits or supernatural things?
The correct answer is Girolamo Fracastoro.