Using the scientific method (Part 2), Better control of diseases:

Using the scientific method (Part 1) : https://steemit.com/science/@afzaalsabir/using-the-scientific-method-part-1
Better control of diseases: If you had been born two hundred years ago. You would have had about one chance in eight of living to be one year old. In other words, in those days about seven out of eight babies before reaching their first birthday. Suppose you had been an unusually strong little fellow and had lived through that first year. Very likely, before you were six years old, you would have had smallpox, and by the time you reached the age of twelve, you would undoubtedly have had measles, whooping cough, scarlet fever, and diphtheria.
Even then your battle for life was not over. Yellow fever, malaria, typhus, cholera, typhoid fever, and even influenza, once started, spread through a community. Life was most uncertain. A person who lived to be more than thirty years of age was indeed fortunate. It is unbelievable that such condition could have existed so short a time ago. Today babies are born in hospitals where there is little likelihood of their getting a disease.
Young people are treated to protect them against smallpox, diphtheria, and typhoid fever. Today a person can expect to live be almost seventy years old. In other words, more than thirty years have been added to the expected length of man’s life. These changes have been made possible by use of the scientific method to solve such problems as the causes of disease and its prevention.