When a group of workers in the Bureau of Laboratories began in 1913 the study of pertussis, we were confronted with an almost complete lack of data bearing on the epidemiology of the disease in New York City.
It was essential, however, for our investigations, especially for the clinical side, that we gather a certain number of facts on the epidemiology of whooping cough, so that we might be in a position to compare the different methods of treatment and obtain a firm basis for our future clinical conclusions and sanitary recommendations.
Early in the fall of 1913, therefore, I began a preliminary survey, which was continued during the spring of 1914 and subsequently extended so as to cover every season of the year and so planned that quite a complete picture of the whooping cough situation for the last three years was obtained.
The material of these surveys is
LUTTINGER P. THE EPIDEMIOLOGY OF PERTUSSI: INTRODUCTORY. Am J Dis Child. 1916;XII(3):290–315. doi:10.1001/archpedi.1916.04110150088007
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