This practice was discontinued as impractical when it became apparent that about 80 per cent of patients with measles would be found positive for B. influenzæ when repeated throat cultures were made during their hospital treatment. The dissemination of B. influenzæ through the wards from which we were attempting to exclude it took place much faster than we could follow its spread by cultural methods. When this became evident, the practice of separating the two groups of patients with reference to B. influenzæ was discontinued and the great inconvenience of repeated transfer of patients was largely eliminated. Table LX gives the findings in 426 cases of measles cultured for B. influenzæ during the period when the practice of separating measles patients carrying B. influenzæ from those not carrying the organisms was followed. TABLE LX RESULTS OF REPEATED THROAT CULTURES FOR B. INFLUENZÆ ON 426 CASES OF MEASLES, CAMP PIKE, SEPT. 15 TO OCT. 20, 1918. ═══════════╤════════╤═════════╤═════════════════════════════════════ │ │ │ │ │ │ │ │GROUP NO.│ │ TOTAL │NEGATIVE │ GROUPS │ NUMBER │ FOR B. │ RESULTS OF CULTURES TO DATE │CULTURED│INFLUENZÆ│ │IN GROUP│ ON │ │ │ADMISSION│ │ │ │ │ │ │ ───────────┼────────┼─────────┼───────┬───────┬───────┬───────┬───── │ │ │ │ │ │ │ NO. „ │ „ │ „ │ 1ST │ 2ND │ 3RD │ 4TH │ IN │ │ │CULTURE│CULTURE│CULTURE│CULTURE│EACH │ │ │ │ │ │ │CLASS ───────────┼────────┼─────────┼───────┼───────┼───────┼───────┼───── I │ │ │ │ │ │ │ 1st culture│ │ │ │ │ │ │ on │ 426│ ——│ − │ │ │ │ 274 admission│ │ │ │ │ │ │ „ │ „ │ „ │ + │ │ │ │ 152 ───────────┼────────┼─────────┼───────┼───────┼───────┼───────┼───── II │ │ │ │ │ │ │ 1st and 2nd│ │ │ │ │ │ │ culture, │ │ │ │ │ │ │ after one│ 201│ 143│ − │ − │ │ │ 75 week in │ │ │ │ │ │ │ hospital │ │ │ │ │ │ │ „ │ „ │ „ │ − │ + │ │ │ 68 „ │ „ │ „ │ + │ + │ │ │ 29 „ │ „ │ „ │ + │ − │ │ │ 29 ───────────┼────────┼─────────┼───────┼───────┼───────┼───────┼───── III │ │ │ │ │ │ │