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Home > Category Index for Science Quotations > Category Index I > Category: Infection

Infection Quotes (19 quotes)

A drop of old tuberculin, which is an extract of tubercle bacilli, is put on the skin and then a small superficial scarification is made by turning, with some pressure, a vaccination lancet on the surface of the skin. The next day only those individuals show an inflammatory reaction at the point of vaccination who have already been infected with tuberculosis, whereas the healthy individuals show no reaction at all. Every time we find a positive reaction, we can say with certainty that the child is tuberculous.
'The Relation of Tuberculosis to Infant Mortality', read at the third mid-year meeting of the American Academy of Medicine, New Haven, Conn, (4 Nov 1909). In Bulletin of the American Academy of Medicine (1910), 11, 75.
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All infections, of whatever type, with no exceptions, are products of parasitic beings; that is, by living organisms that enter in other living organisms, in which they find nourishment, that is, food that suits them, here they hatch, grow and reproduce themselves.
Quoted in English in Paolo Mazzarello, The Hidden Structure: A Scientific Biography of Camillo Golgi (1999), trans. and ed. Henry A. Buchtel and Aldo Hadiani, 19.
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But however secure and well-regulated civilized life may become, bacteria, Protozoa, viruses, infected fleas, lice, ticks, mosquitoes, and bedbugs will always lurk in the shadows ready to pounce when neglect, poverty, famine, or war lets down the defenses.
Rats, Lice and History (1934), 13-4.
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But when it has been shown by the researches of Pasteur that the septic property of the atmosphere depended not on the oxygen, or any gaseous constituent, but on minute organisms suspended in it, which owed their energy to their vitality, it occurred to me that decomposition in the injured part might be avoided without excluding the air, by applying as a dressing some material capable of destroying the life of the floating particles. Upon this principle I have based a practice.
'On the Antiseptic Principle in the Practice of Surgery', The British Medical Journal (1867), ii, 246.
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I have shown first in the course of this investigation that the infective matter is independently animate, and further that one could think of the independently animate matter as either animal and plant organisms or elementary parts of animals, which have achieved a relative individuality.
'On Miasmata and Contagia', trans. G. Rosen, Bulletin of the Institute of the History of Medicine (1938), 6, 957.

I hold every man a debtor to his profession; from the which as men of course do seek to receive countenance and profit, so ought they of duty to endeavour themselves, by way of amends, to be a help and ornament thereunto. This is performed, in some degree, by the honest and liberal practice of a profession; where men shall carry a respect not to descend into any course that is corrupt and unworthy thereof, and preserve themselves free from the abuses wherewith the same profession is noted to be infected: but much more is this performed, if a man be able to visit and strengthen the roots and foundation of the science itself; thereby not only gracing it in reputation and dignity, but also amplifying it in profession and substance.
Opening sentences of Preface, Maxims of Law (1596), in The Works of Francis Bacon: Law tracts. Maxims of the Law (1803), Vol. 4, 10.
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No national improvement can come from outside. It must come from within… But improved feeling has no chance of spreading throughout the body politic without that machinery of infection which we know by the name of education.
In paper 'On Social Unrest', The Daily Mail (1912). Collected and cited in A Sheaf (1916), 197-198.
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No science is immune to the infection of politics and the corruption of power. … The time has come to consider how we might bring about a separation, as complete as possible, between Science and Government in all countries. I call this the disestablishment of science, in the same sense in which the churches have been disestablished and have become independent of the state.
In 'The Disestablishment of Science', Encounter (Jul 1971), 15.
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Sepsis is an insult to a surgeon.
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Suppose [an] imaginary physicist, the student of Niels Bohr, is shown an experiment in which a virus particle enters a bacterial cell and 20 minutes later the bacterial cell is lysed and 100 virus particles are liberated. He will say: “How come, one particle has become 100 particles of the same kind in 20 minutes? That is very interesting. Let us find out how it happens! How does the particle get in to the bacterium? How does it multiply? Does it multiply like a bacterium, growing and dividing, or does it multiply by an entirely different mechanism ? Does it have to be inside the bacterium to do this multiplying, or can we squash the bacterium and have the multiplication go on as before? Is this multiplying a trick of organic chemistry which the organic chemists have not yet discovered ? Let us find out. This is so simple a phenomenon that the answers cannot be hard to find. In a few months we will know. All we have to do is to study how conditions will influence the multiplication. We will do a few experiments at different temperatures, in different media, with different viruses, and we will know. Perhaps we may have to break into the bacteria at intermediate stages between infection and lysis. Anyhow, the experiments only take a few hours each, so the whole problem can not take long to solve.”
[Eight years later] he has not got anywhere in solving the problem he set out to solve. But [he may say to you] “Well, I made a slight mistake. I could not do it in a few months. Perhaps it will take a few decades, and perhaps it will take the help of a few dozen other people. But listen to what I have found, perhaps you will be interested to join me.”
From 'Experiments with Bacterial Viruses (Bacteriophages)', Harvey Lecture (1946), 41, 161-162. As cited in Robert Olby, The Path of the Double Helix: The Discovery of DNA (1974, 1994), 237.
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The earliest of my childhood recollections is being taken by my grandfather when he set out in the first warm days of early spring with a grubbing hoe (we called it a mattock) on his shoulder to seek the plants, the barks and roots from which the spring medicine for the household was prepared. If I could but remember all that went into that mysterious decoction and the exact method of preparation, and with judicious advertisement put the product upon the market, I would shortly be possessed of wealth which might be made to serve the useful purpose of increasing the salaries of all pathologists. … But, alas! I remember only that the basic ingredients were dogwood bark and sassafras root, and to these were added q.s. bloodroot, poke and yellow dock. That the medicine benefited my grandfather I have every reason to believe, for he was a hale, strong old man, firm in body and mind until the infection came against which even spring medicine was of no avail. That the medicine did me good I well know, for I can see before me even now the green on the south hillside of the old pasture, the sunlight in the strip of wood where the dogwood grew, the bright blossoms and the delicate pale green of the leaf of the sanguinaria, and the even lighter green of the tender buds of the sassafras in the hedgerow, and it is good to have such pictures deeply engraved in the memory.
From address, 'A Medical Retrospect'. Published in Yale Medical Journal (Oct 1910), 17, No. 2, 57. [Note: q.s. in an abbreviation for quantum sufficit meaning “as much as is sufficient,” when used as a quantity specification in medicine and pharmacology. -Webmaster]
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The frequency of disastrous consequences in compound fracture, contrasted with the complete immunity from danger to life or limb in simple fracture, is one of the most striking as well as melancholy facts in surgical practice.
'On a New Method of Treating Compound Fracture, Abscesses, etc: With Observations on the Conditions of Supperation', Part I, The Lancet (1867), 326.
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The late James McNeil Whistler had a French poodle of which he was extravagantly fond. This poodle was seized with an affection of the throat, and Whistler had the audacity to send for the great throat specialist, Mackenzie. Sir Morell, when he saw that he had been called to treat a dog, didn't like it much, it was plain. But he said nothing. He prescribed, pocketed a big fee, and drove away.
The next day he sent posthaste for Whistler. And Whistler, thinking he was summoned on some matter connected with his beloved dog, dropped his work and rushed like the wind to Mackenzie's. On his arrival Sir Morell said, gravely: “How do you do, Mr. Whistler? I wanted to see you about having my front door painted.”
Attributed or merely a legend. This anecdote wording is from 'Turn About Is Fair Play', Collier's (26 Mar 1904), 32, No. 26, 24, the earliest version the Webmaster has found so far. It has been variously reworded and printed in a number of books and magazines over the decades since, and is still circulated in the present day. The wording of Mackenzie's remark changes from one version to another, but remains true to the sense of it. In Medical Record (4 Jan 1913), 83, No. 1, 46, a reprinted column from The Universal Medical Record says: “‘X’ relates that he ‘has recently been watching through the weekly papers, of a story anent the artist Whistler and Sir mrell Mackenzie, which, curiously enough, starting in Paris, has now reached the American medical Journals and seems embarked on a long and active career. ... Mr. Ben Trovato, the eminent raconteur, seems for the moment at fault. Still, the natural history of such legends as this leads us to suppose that the story of the laryngologist and the poodle will continue to circulate, till after having served its day it ‘falls on sleep,’ later to be revived by the journalists of the next generation about some heroes of to-day.” Examples of other versions are in La Vulgarisation scientifique: revue mensuelle illustrée (1906); Don C. Seitz Whistler Stories (1913); Lewis C. Henry, Humorous Anecdotes About Famous People (1948); Graeme Garden The Best Medicine (1984); The Reader's Digest (1986), 128, Nos. 765-769, 40. So, in fact, this anecdote has, indeed, been revived for over a century, but is still narrated about Whistler and Mackenzie. Meanwhile, the column in the Medical Record mentioned above comments: “Why Whistler—whose brother, by-the-bye, was almost equally celebrated in the same department of medicine—should have desired the services of a laryngologist for his poodle, heaven only knows.” So, whether to regard this as entirely legend, or perhaps having some foundation of truth, the Webmaster cannot say, but would like to hear from anyone with more historical background to add.
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The possibility that the infective agent may not contain nucleic acid and consist only of a peptide or peptide-polysaccharide complex which has replication properties within susceptible cells is intriguing. If peptides, short-chain proteins, or peptide/fatty-acid/ polysaccharide complexes activate nucleic-acid template activity in the host genes to produce identical infective particles, this would invalidate the accepted dogma of present-day molecular biology in which D.N.A. and R.N.A. templates control all biological activity.
'Scrapie: An Infective Peptide?', The Lancet (1972), i, 748.
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The pure culture is the foundation for all research on infectious disease.
'Zur Untersuchungen von Pathologen Organismen', Mittheilungen aus dem Kaiserlichen Gesundheitsamte (1881), 1, 1-48. Quoted in English in Thomas D. Brock, Robert Koch: A Life in Medicine and Bacteriology (1988), 94.
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The sick are still in General Mixed Workhouses—the maternity cases, the cancerous, the venereal, the chronically infirm, and even the infectious, all together in one building, often in the same ward where they cannot be treated.
UK National Committee to Promote the Break-up of the Poor Laws, The Failure of the Poor Law (1909). Quoted in Bulletin of the History of Medicine (1961), 35, 110.
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The study of the serum of immunized animals forms a new chapter in the history of the struggle between the animal and infective agents, under which heading practical results of the highest importance are already inscribed. Any explanation of the phenomena is, however, still far from complete.
In Studies in Immunity (1909), 8.
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To choose a rough example, think of a thorn which has stuck in a finger and produces an inflammation and suppuration. Should the thorn be discharged with the pus, then the finger of another individual may be pricked with it, and the disease may be produced a second time. In this case it would not be the disease, not even its product, that would be transmitted by the thorn, but rather the stimulus which engendered it. Now supposing that the thorn is capable of multiplying in the sick body, or that every smallest part may again become a thorn, then one would be able to excite the same disease, inflammation and suppuration, in other individuals by transmitting any of its smallest parts. The disease is not the parasite but the thorn. Diseases resemble one another, because their causes resemble each other. The contagion in our sense is therefore not the germ or seed of the disease, but rather the cause of the disease. For example, the egg of a taenia is not the product of a worm disease even though the worm disease may have been the cause, which first gave rise to the taenia in the intestinal contents—nor of the individual afflicted with the worm disease, but rather of the parasitic body, which, no matter how it may have come into the world at first, now reproduces itself by means of eggs, and produces the symptoms of the worm disease, at least in part. It is not the seed of the disease; the latter multiplies in the sick organism, and is again excreted at the end of the disease.
'On Miasmata and Contagia', trans. G. Rosen, Bulletin of the Institute of the History of Medicine (1938), 6, 924.
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When I look back upon the past, I can only dispel the sadness which falls upon me by gazing into that happy future when the infection [puerperal fever] will be banished. But if it is not vouchsafed for me to look upon that happy time with my own eyes … the conviction that such a time must inevitably sooner or later arrive will cheer my dying hour.
[Webmaster note: He had identified that puerperal fever was transmitted to women by the “cadaveric material” on the hands of physicians coming direct from the post-mortem room to an examination. He discovered that washing the physician’s hands in a solution of chlorinated lime prevented the transmission of this disease. His doctrine was opposed by many, and he died in an insane asylum in 1865, at age 47.] Original publication, Die Aetiologie, der Begriff und die Prophylaxis des Kindbettfiebvers (1861), trans. by F.P. Murphy as The Etiology, the Concept, and the Prophylaxis of Childbed Fever (1941), Foreword. As quoted in Francis Randolph Packard (ed.), Annals of Medical History (1939), 3rd Series, 1, 94; and Stephen Jay Gould, Hen’s Teeth and Horse’s Toes: Further Reflections in Natural History (1985), 274.
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Carl Sagan Thumbnail In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. (1987) -- Carl Sagan
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