Girolamo Fracastoro, (born c. 1478, Verona, Republic of Venice, Italian physician, poet, astronomer, and geologist, proposed a scientific germ theory of disease. He is best known for Syphilis in his book "Syphilis sive morbus Gallicus" in 1530. He named the disease, Syphilis. He made an intense study of epidemic diseases. he provided the medical justification for the removal of the council to the papal state of Bologna by pointing out the danger of plague in the north Italian town of Trent.