The 2,344 cases of pneumonia and the various complications at the base hospital at Camp Bowie may be grouped into three periods.
—From the opening of the base hospital, Sept. 24, 1917, to Jan. 1, 1918: During this period occurred an epidemic of measles, with a large incidence of pneumonia, followed by numerous serious complications and a high death rate.
—From Jan. 1, to Sept. 27, 1918: The first three and a half months of this period continued to show a high incidence of pneumonia, though the number and severity of the complications was not as great as in Period 1. From April 15 to September 27 was a comparatively quiet period.
—From Sept. 28, 1918, to Jan. 1, 1919: This period included a very high incidence of influenza and a high percentage of pneumonia. In contrast to the pneumonia of 1917, there were