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Coping With Disease And Environmental: John W. Gardner left the office of secretary of the U.S. Department of Health, Education, and Welfare on March 1, 1968, and was succeeded by Wilbur Cohen. On March 31, 1968, a considerable reorganization of the department's health activities was announced. The basis of the reorganization was the country's rapidly changing needs in medical education and research, in the delivery of health services, and in coping with disease and environmental problems.
People display differing degrees of susceptibility to such other diseases as diphtheria, diabetes, and cancer. Certain kinds of cancsr, for example, seem to be more prevalent in some families than in others, but direct in-heritability has so far been demonstrated only in certain rare types. A "genetic predisposition to many of the psychosomatic diseases" has also been demonstrated (23, p. 79, 1955). Individual differences in susceptibility may be accounted for in part by environmental factors such as conditions causing emotional stress and strain, and in part by structural weakness, certain types of inherited constitution, and predisposition to the disease. For actual contraction of these diseases, there must be both susceptibility and exposure to the infectious agent and/or the environmental pressures. From the field of animal experimentation has come evidence that mice known to have inherited suscept'1 ility to Cancer do not develop this disease when environmental conditions are properly controlled.
Mycoplasmosis is a respiratory disease caused y the bacteria Mycoplasma gallisepticum. It is Iso known as air sac disease or chronic respira-jry disease. Those affected with the disease may how nasal discharge, watery eyes, and respira-)ry difficulty. This disease is often associated /ith other respiratory diseases. It is transmitted hiefly from infected hens to their chicks through le eggs. The disease can also be transmitted by ontact with infected individuals, but it spreads ery slowly in this manner. The disease can best e controlled by maintaining breeding flocks free f the disease by strict measures of isolation and mitation. Chicks hatched from such flocks can egin life free of the disease. |
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