Chronic Bronchitis and Emphysema

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Abstract
IN a keynote address to the National Tuberculosis Association in 19641 the Health Commissioner for the New York City Metropolitan Area emphasized the concern he felt over the rising incidence of emphysema and chronic bronchitis as major public-health problems. He stated that the emphysema death rate in New York City had increased 10 times over the past 12 years, and that of chronic bronchitis four times. The increasing use of questionnaires and simple tests of pulmonary function in different parts of the world has led to a realization that chronic respiratory symptoms are surprisingly common in many parts of the . . .