═══════════════════════╤═══════════════════════╤═══════════════════════ DATES │ MEASLES │ PNEUMONIA FOLLOWING │ │ MEASLES ───────────────────────┼───────────────────────┼─────────────────────── Sept. 11 to 17 │ 18│ 0 Sept. 18 to 24 │ 20│ 0 Sept. 25 to Oct. 1 │ 74│ 0 Oct. 2 to 8 │ 143│ 13 Oct. 9 to 15 │ 178│ 9 Oct. 16 to 22 │ 158│ 16 Oct. 28 to 29 │ 100│ 6 Oct. 30 to Nov. 5 │ 56│ 3 Nov. 6 to 12 │ 38│ 4 Nov. 13 to 19 │ 23│ 1 Nov. 20 to 26 │ 29│ 1 Nov. 27 to Dec. 3 │ 22│ 1 Dec. 4 to 10 │ 8│ 1 Dec. 11 │ 0│ 1 ───────────────────────┴───────────────────────┴─────────────────────── Pneumonia following measles began to appear on October 5, and within the week following 16 cases occurred. An equal number of cases appeared each week during about three weeks and fewer scattered cases occurred throughout November and December. Table LVIII shows date of onset of measles and measles pneumonia cases. Chart 3 presents the occurrence of measles and of the pneumonia following measles by weeks of onset compared with that of epidemic influenza. [Illustration: Chart 3.—Shows the relation of the epidemic of measles to that of influenza at Camp Pike, and the relations of the pneumonia following measles to both measles and influenza. The large incomplete curve represents influenza; the intermediate curve, measles; the small curve, pneumonia following measles. ] It will be noted from the overlapping of the two curves in Chart 3 that a considerable portion of the measles cases appeared before the influenza had subsided in Camp Pike. This occurrence of the two epidemics at the same time makes it impossible to separate the parts played by each disease in producing the pneumonias and other complications following measles. Analysis of the chart, however, shows that the pneumonia with measles occurred in large part during the first half of the measles epidemic. This is of particular significance since it was during this period that the effects of the influenza wave were felt most severely.