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Prevention Of Disease: In modern poultry production, thousands o chickens are raised in close proximity to eacl other. Under these circumstances, the spread o disease can be extremely rapid, and losses fron disease can be serious. The monetary loss in thf United States each year from chicken disease: has been estimated to be as high as $300 million Disease control requires measures aimed at the prevention of disease of outbreaks as well as the proper diagnosis and treatment of diseases. The most generally encountered diseases of poultry are the following:
He maintained that the causes of heart disease deserve first priority since the prevention of disease of heart disease, the ultimate goal, depends upon determining the causes. In a follow-up to this article, the American car-diologist Paul Dudley White published the first edition of his textbook Heart Disease (1931), emphasizing the etiological, or causative, diagnosis first, followed by structural and functional diagnoses in that order.
As effective methods of diagnosis and prevention of disease of a disease were discovered, quarantine laws, regulations, and practices were changed to use this knowledge. Thus was created a new concept of quarantine. Instead of prohibiting entry of ships and passengers into port until a disease had run its course, nations took constructive measures such as improved sanitation for ships and vaccination for passengers, to minimize the possibility of disease being aboard a vessel or passengers being infected.
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