The two pie charts display the fatality rates of 6 infectious disease categories as percentages of overall infectious disease deaths in Canada in the years 1900 and 1930. The corresponding table outlines the number of deaths due to infectious diseases per 1000 people in Canada for the same years.
Deaths caused by 3 of the 6 infectious disease categories shrunk as percentages of overall infectious disease deaths between the years 1900 and 1930. Diphtheria dropped from 37% to 24%. Typhoid and scarlet fever dropped from 29% to 18% and 9% to 5%, respectively. Measles was the only disease that held a consistent proportion of overall infectious disease deaths at 12%. Whooping cough grew from 11% to 15% and other, non-pandemic diseases swelled from 2% to 26%.
However, the table adds significant context to the above values. It appears as though the overall death rates due to infectious diseases fell tremendously over the period in question. In 1900, 86 out of 1000 people died of infectious diseases in Canada. In 1930, however, this figure was only 32. Thus, because overall death rates from infectious diseases shrunk so dramatically over the 30 years in question, any trends observed between the two pie charts can be assumed less intense than they appear.
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