In this campaign Aurelius, after a series of successes, was attacked, according to some authorities, by an infectious disease, of which he died after a seven days' illness, either in his camp at Sirmium (Mitrovitz), on the Save, in Lower Pannonia, or at Vindobona (Vienna), on the 17th of March 180, in the fifty-ninth year of his age.
When sulphur is burned in air or oxygen, sulphur dioxide is produced, which is a powerful disinfectant, used to fumigate rooms which have been occupied by persons suffering from some infectious disease.
It is to him that the world is indebted for the introduction of methods which have already worked wonders, and bid fair to render possible the preventive treatment of all infectious diseases.
The decrease may chiefly have been due to infectious diseases, especially a very severe epidemic of smallpox.
On the Easter Hill stands the Royal Edinburgh asylum for the insane, which formerly occupied a site in Morningside, while the City infectious diseases hospital is situated at Colinton Mains.