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Data are presented which throw light on the frequency and source of such tropical diseases as are found commonly in Massachusetts. The incidence only is shown for tropical diseases less common or rare in Massachusetts.
When interpreting the figures a distinction must be drawn between reportable diseases regarding which both state and hospital data are available and the diseases which are not reportable. Information about diseases not reportable was obtained only from the larger hospitals in or near Boston.
Among the reportable diseases it seems very probable that amoebic dysentery and pellagra are decidedly more common than the figures indicate. The same doubtless is the case for the rarer diseases which are not reportable.
The figures for all the diseases listed above should be regarded as minimal.
It is a pleasure to express thanks particularly to the members of the Statistical Division of the Massachusetts State Department of Health and to the record-room personnel of the hospitals for cordial co-operation and assistance in obtaining the data desired.
Grateful acknowledgments are extended to the authorities of the hospitals listed below for permission to examine and to make use of their records.
1 Read before the meeting of the American Society of Tropical Medicine at Washington, D. C., May 3, 1922.
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