A brief description of the Jui-san no Oshigoto in Isekai manga:
The main character of a young man named Kazami Shingo is a state veterinarian. But one day he goes to another world. The Head of the Empire asks to save the people of his world, where magic and unclean power reign over medicine, where many people die from epidemics and natural disasters. How can one stay away from such a situation? Having learned the real situation of the other world, Kazami swears with all his heart to help.