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It has been estimated that there were about 20000000 cases of influenza and pneumonia in the United States in 1918-19, with approximately 850000 deaths. In 1918 alone, 464959 deaths from influenza and pneumonia were registered in the registration States and the District of Columbia as compared with 115526 in 1917. This includes deaths in the Army, Navy, and Marine Corps which occurred in registration States. Eighty percent of the deaths in 1918 occurred in the last 4 months of the year. The numbers of deaths from influenza and pneumonia by age in registration States in 1917, 1918, and 1919 are shown in the table. A number of States in which Army camps were located are not included in this table, so a considerable number of deaths of civilians and of military personnel for 1918-19 are missing which accounts for the difference in an estimated total of 850000 for the United States and the figure of 650399 for the registration States. In 1918 the death rate for males was 669,0 per 100000 population; for females, 507,5. At ages 25 to 34, the rate was 1.216,6 for males and 781,4 for females. These excessively high mortality rates profoundly influenced the estimated average length of life calculated for the year 1918. It was reduced 24 percent from 1917 to 1918 for males and 22 percent for females. However, these estimated average lengths of life in years returned to their previous trends in 1920. |
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