Carlo Francesco Cogrossi
Carlo Francesco Cogrossi (5 July 1682 – 13 January 1769) was an Italian physician who was among the first to suggest the theory of contagium vivum that minute invisible parasitic living organisms were a cause of disease. His suggestion was based on his examination of a rinderpest epidemic which he published in a letter Nuova idea del male contagioso dei buoi (New theory of the contagious disease of the oxen) published in 1714.