1778 – He was born on the 3rd of April at Saint-Georges-sur-Cher, in the Loir-et-Cher département.
1803-1807 – He was the mayor of Chenonceaux.
1815 – He spent 15 years at Chenonceaux gaining experience, wrote his thesis in medicine and then became medical director at the hospital in Tours; which currently bears his name.
1825-1826 – He performed the first successful tracheotomy, distinguished between scarlet fever and diphtheria.
1855 – He studied disease in detail and was the first to think that disease was caused by bacteria, however, a microscope was not available to him and he was unable to confirm his hypothesis.
– He discovered that the same illness could manifest itself differently in different patients.
1862 – Pierre Bretonneau died.