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We need to measure more carefully the relative importance of different sources of disease and different modes of infec tion. It is not so important to know that typhoid bacilli live in water for weeks, as it is to know that 99 per cent die in one week. It is not enough to discover that diphtheria bacilli can be recovered from articles in the sick-room; we must learn how often they are found and how often disease is traced to such a source. We have for years been much alarmed because tubercle bacilli are found in milk, but since a serious effort has been made to measure the actual danger, the alarm has greatly diminished. Doubtless the house fly has been the cause of typhoid fever, but in what percentage of cases we are profoundly ignorant. Healthy carriers of diphtheria have certainly transmitted the disease to others, and we should earnestly try to determine the amount of diphtheria caused in this way. The attempt is made in the following pages to estimate roughly, with the very imperfect material now available, the relative importance of different factors in the extension of infectious diseases. The conclu sions must to a large extent be merely tentative, and as indicating lines for further study.
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The Sources and Modes of Infection (Classic Reprint)
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Paperback. Condition: New. Print on Demand. This book delves into the complex world of infectious diseases, challenging long-held beliefs about their origins and transmission. The author, writing in the early 20th century, traces the evolution of medical understanding from the miasma theory, which posited disease arose from foul air, to the germ theory, which implicated bacteria as the culprit. He then critically examines the prevailing notion that disease germs thrived outside the human body, particularly in decaying organic matter, a theory known as the "filth theory." By meticulously analyzing both laboratory findings and epidemiological data, the author demonstrates that the lifespan of disease germs outside the body is often much shorter than previously thought. He argues that the focus should shift from external sources of infection to the human body itself, highlighting the role of carriers and missed cases in disease transmission. The book challenges the effectiveness of isolation practices in curbing outbreaks, proposing that direct contact is a more frequent mode of infection than previously believed. This thought-provoking work offers a fresh perspective on disease prevention, emphasizing the importance of understanding how germs spread within human populations rather than solely focusing on external factors. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Seller Inventory # 9781332198337_0
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The Sources and Modes of Infection Classic Reprint
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The Sources and Modes of Infection (Classic Reprint)
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ISBN 13: 9781332198337
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