George Washington contributed greatly to the progression of public health systems in America. During his time working with the Continental Army, Washington observed how smallpox and other diseases spread like wildfire through Army camps and gatherings. This was often due to the cramped and dirty living conditions of these places. Washington understood the destructive nature of smallpox and other diseases such as malaria, diphtheria, and scarlet fever. He was one of the first to introduce the idea of compulsory health initiatives such as widespread inoculation. Washington also had experience with disease outside the realm of combat and war. Having himself suffered from many illnesses and observing those of his family, George Washington was an integral part of the establishment of American public health programs.