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July 16, 1938


Author Affiliations

Health Officer, Los Angeles City Health Department.

JAMA. 1938;111(3):269-270. doi:10.1001/jama.1938.02790290055021

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To the Editor:—  The article on the "Control of Meningococcic Meningitis Epidemics" by Dwight M. Kuhns and others in the February 12 issue of The Journal will provide clues for future study in preventive medicine. However, the article did not lead to any definite conclusions as to the value of a program of active immunization in a closed population group. According to the article, forty-eight different camps were involved with an average population of 152 per camp. In table 3, twenty different outbreaks were listed: in nine, or 45 per cent of the series there occurred only a single case. Does such an incidence constitute an epidemic, or could not one anticipate such a rate to occur by chance in any other comparable group under similar circumstances? Estimates have been made that from 2 to 5 per cent of the population in camp enrollees are normally carriers and that the

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