GRAFTON TYLER BROWN, B.S., M.D., F.A.C.P.
There are three distinct types of seasonal hay-fever in the District of Columbia and vicinity, namely: early spring, due to tree pollens; late spring or summer, the type under consideration; and the fall variety, due to the pollen of the ragweeds. From a careful analysis of the case records of all the seasonal hay-fever patients who consulted me during the past year, I would estimate that in the District of Columbia and vicinity, the late spring or summer cases are about eight times as frequent as the early spring type, but only half as frequent as the fall variety. About
BROWN GT. Late Spring or Summer Hay-Fever in the District of Columbia and Vicinity1. Ann Intern Med. ;1:169–178. doi: 10.7326/0003-4819-1-3-169
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Published: Ann Intern Med. 1927;1(3):169-178.
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