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In Class T.B. Plus, the corresponding figures were 15 males
and 9 females quiescent. 19.5 per cent.; 53 males and 40 females,
not quiescent. 75.6 per cent.; 3 males and 3 females died, 4.9
per cent.
Taking the groups together, 31.2 per cent. of cases were
discharged as quiescent; 64.5 per cent. as not quiescent; and
4.3 per cent. died.
Modern methods of treatment have greatly increased the life
expectancy of infectious cases, but we appear to be approaching
the limits of potential success obtainable by our present methods
of treatment.
Sputum conversion has become the touchstone of successful
treatment in pulmonary tuberculosis, that is, the making of the
infectious patient non-infectious.
The sputum conversion rate has increased side by side with
the application of collapse therapy, suggesting that the introduction
of active therapy is responsible for the better results.

Sputum positive cases discharged Sputum NEGATIVE
Of 160 cases that have been traced, who were discharged
from sanatorium during the four years 1939—1942, 115, or 71.9
per cent., were still alive at the end of 1947.
Sputum positive cases discharged sputum POSITIVE
Of 152 cases that have been traced, who were discharged
from sanatorium during the four years 1939—1942, only 32, or
21 per cent., were still alive at the end of 1947.
Non-Pulmonary Tuberculosis.
18 patients were discharged during the year, and 55.5 per
cent. of these were quiescent.