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Harvard School of Public Health

It is an honor to participate in this symposium on epidemiology on the occasion of the dedication of the magnificent new physical facility designed to house the Department of Epidemiology and Public Health at Yale. That the facility is a collaborative venture and also houses the home laboratories of the arbovirus program of the Rockefeller Foundation can only be viewed as a singularly logical development that will yield substantial benefits to mankind. Indeed, at this point in history, when the unenlightened confidently predict the eradication in the near term of the gamut of infectious diseases that plague man, it becomes ever more essential that the few scientists who maintain an interest in the ecology and epidemiology of infectious diseases receive continued and increased support. For one can unfortunately anticipate that in a constantly changing human ecology, man will be compelled to wage a never ending battle with his pathogens, and that old problems in the field of infectious diseases will be replaced by a continuing series of new ones. Furthermore, an expanding global population will compound our difficulties. Yet we cannot expect mankind to contain his reproductive potential, unless we prevent premature deaths and ill health induced by infectious entities. Voluntary control of reproduction is to be expected as a concomitant of the economic and social advances achieved by a healthy society at such a time as that society becomes convinced that a reduced number of children can reasonably be expected