Vaccination was almost solely due to the persistent efforts of Dr. Edward Jenner, a pupil of the celebrated John Hunter, born May 17, 1749.
In his comments on the life of Edward Jenner, Adams, in "The Healing Art," has graphically described his first efforts to institute vaccination, as follows: "To the ravages of small-pox, and the possibility of finding some preventive Jenner had long given his attention. It is likely enough that his thoughts were inclined in this direction by the remembrance of the sufferings inflicted upon himself by the process of inoculation. Through six weeks that process lingered. He was bled, purged, and put on a low diet, until 'this barbarism of human veterinary practice' had reduced him to a skeleton. He was then exposed to the contagion of the small-pox. Happily, he had but a mild attack; yet the disease itself and the inoculating operations, were probably the causes of the excessive sensitiveness which afflicted him through life.
"When Jenner was acting as a surgeon's articled pupil at Sudbury, a young countrywoman applied to him for advice. In her presence some chance allusion was made to the universal disease, on which she remarked: 'I shall never take it, for I have had the cow-pox.' The remark induced him to make inquiries; and he found that a pustular eruption, derived from infection, appeared on the hands of milkers, communicated from the teats of cows similarly disordered; this eruption was regarded as a safeguard against small-pox. The subject occupied his mind so much that he frequently mentioned it to John Hunter and the great surgeon occasionally alluded to it in his lectures, but never seems to have adopted Jenner's idea that it might suggest some efficacious substitute for inoculation. Jenner, however, continued his inquiries, and in 1780 he confided to his friend, Edward Gardner, his hope and prayer that it might be his work in life to extirpate smallpox by the mode of treatment now so familiar under the name of vaccination.
"At the meetings of the Alveston and Radborough Medical Clubs, of both of which Jenner was a member, he so frequently enlarged upon his favorite theme, and so repeatedly insisted upon the value of cow-pox as a prophylactic, that he was denounced as a nuisance, and in a jest it was even proposed that if the orator further sinned, he should then and there be expelled. Nowhere could the prophet find a disciple and enforce the lesson upon the ignorant; like most benefactors of mankind he had to do his work unaided. Patiently and perseveringly he pushed forward his investigations. The aim he had in view was too great for ridicule to daunt, or indifference to discourage him. When he surveyed the mental and physical agony inflicted by the disease, and the thought occurred to him that he was on the point of finding a sure and certain remedy, his benevolent heart overflowed with unselfish gladness. No feeling of personal ambition, no hope or desire of fame, sullied the purity of his noble philanthropy. 'While the vaccine discovery was progressive,' he writes, 'the joy at the prospect before me of being the instrument destined to take away from the world one of its greatest calamities, blended with the fond hope of enjoying independence, and domestic peace and happiness, were often so excessive, that, in pursuing my favorite subject among the meadows, I have sometimes found myself in a kind of reverie. It is pleasant to recollect that those reflections always ended in devout acknowledgments to that Being from whom this and all other blessings flow.' At last an opportunity occurred of putting his theory to the test. On the 14th day of May, 1796,—the day marks an epoch in the Healing Art, and is not less worthy of being kept as a national thanksgiving than the day of Waterloo—the cow-pox matter or pus was taken from the hand of one Sarah Holmes, who had been infected from her master's cows, and was inserted by two superficial incisions into the arms of James Phipps, a healthy boy of about eight years of age. The cow-pox ran its ordinary course without any injurious effect, and the boy was afterward inoculated for the small-pox,—happily in vain. The protection was complete; and Jenner thenceforward pursued his experiments with redoubled ardor. His first summary of them, after having been examined and approved by several friends, appeared under the title of 'An Inquiry into the Causes and Effects of the Variolae Vaccinae,' in June, 1798. In this important work he announced the security against the small-pox afforded by the true cow-pox, and proceeded to trace the origin of that disease in the cow to a similar affection of the horse's heel."
This publication produced a great sensation in the medical world, and vaccination spread so rapidly that in the following summer Jenner had the indorsement of the majority of the leading surgeons of London. Vaccination was soon introduced into France, where Napoleon gave another proof of his far-reaching sagacity by his immediate recognition of the importance of vaccination. It was then spread all over the continent; and in 1800 Dr. Benjamin Waterhouse of Boston introduced it into America; in 1801, with his sons-in-law, President Jefferson vaccinated in their own families and those of their friends nearly 200 persons. Quinan has shown that vaccination was introduced into Maryland at least simultaneously with its introduction into Massachusetts. De Curco introduced vaccination into Vienna, where its beneficial results were displayed on a striking scale; previously the average annual mortality had been about 835; the number now fell to 164 in 1801, 61 in 1802, and 27 in 1803. After the introduction of vaccination in England the mortality was reduced from nearly 3000 per million inhabitants annually to 310 per million annually. During the small-pox epidemic in London in 1863, Seaton and Buchanan examined over 50,000 school children, and among every thousand without evidences of vaccination they found 360 with the scars of small-pox, while of every thousand presenting some evidence of vaccination, only 1.78 had any such traces of small-pox to exhibit. Where vaccination has been rendered compulsory, the results are surprising. In 1874 a law was established in Prussia that every child that had not already had small-pox must be vaccinated in the first year of its life, and every pupil in a private or public institution must be revaccinated during the year in which his or her twelfth birthday occurs. This law virtually stamped small-pox out of existence; and according to Frolich not a single death from small-pox occurred in the German army between 1874 and 1882. Notwithstanding the arguments advanced in this latter day against vaccination, the remembrance of a few important statistic facts is all that is necessary to fully appreciate the blessing which Jenner conferred upon humanity. In the last century, besides the enormous mortality of small-pox (it was computed that, in the middle of the last century, 2,000,000 victims perished in Russia from small-pox), the marks of affliction, blindness, deafness, etc., were plain in at least one member of every family.
Asiatic cholera probably originated centuries ago in India, where it is now endemic and rages to such an extent as to destroy 750,000 inhabitants in the space of five years. There is questionable evidence of the existence of cholera to be found in the writings of some of the classic Grecian and Indian authors, almost as far back as the beginning of the Christian era. In the sixteenth and seventeenth centuries travelers in the East gave accounts of this disease. Sonnerat, a French traveler, describes a pestilence having all the characteristics of Asiatic cholera which prevailed in the neighborhood of Pondicherry and the Coromandel coast from 1768 to 1769, and which, within a year, carried off 60,000 of those attacked. According to Rohe, Jasper Correa, an officer in Vasco da Gama's expedition to Calicut, states that Zamorin, the chief of Calicut, lost 20,000 troops by the disease. Although cholera has frequently extended to Europe and America, its ravages have never been nearly as extensive as in the Oriental outbreaks. An excellent short historic sketch of the epidemics of the cholera observed beyond the borders of India has been given by Rohe. In 1817 cholera crossed the boundaries of India, advancing southeasterly to Ceylon, and westerly to Mauritius, reaching the African coast in 1820. In the following two years it devastated the Chinese Empire and invaded Japan, appearing at the port of Nagasaki in 1822. It advanced into Asiatic Russia, and appeared as far east as St. Petersburg in 1830, from whence it spread north to Finland. In 1831 it passed through Germany, invading France and the western borders of Europe, entering the British Isles in 1832, and crossing the Atlantic Ocean for the first time, appeared in Canada, having been carried thence by some Irish emigrants.
From Canada it directly made its way to the United States by way of Detroit. In the same year (1832) it appeared in New York and rapidly spread along the Atlantic coast.
"During the winter of 1832 it appeared at New Orleans, and passed thence up the Mississippi Valley. Extending into the Indian country, causing sad havoc among the aborigines, it advanced westward until its further progress was stayed by the shores of the Pacific Ocean. In 1834 it reappeared on the east coast of the United States, but did not gain much headway, and in the following year New Orleans was again invaded by way of Cuba. It was again imported into Mexico in 1833. In 1835 it appeared for the first time in South America, being restricted, however, to a mild epidemic on the Guiana coast.
"In 1846 the disease again advanced beyond its natural confines, reaching Europe by way of Turkey, in 1848. In the autumn of this year it also appeared in Great Britain, Belgium, the Netherlands, Sweden, and the United States, entering by way of New York and New Orleans. In the succeeding two years the entire extent of country east of the Rocky Mountains was invaded. During 1851 and 1852 the disease was frequently imported by emigrants, who were annually arriving in great numbers from the various infected countries of Europe. In 1853 and 1854 cholera again prevailed extensively in this country, being, however, traceable to renewed importation of infected material from abroad. In the following two years it also broke out in numerous South American States, where it prevailed at intervals until 1863. Hardly had this third great pandemic come to an end before the disease again advanced from the Ganges, spreading throughout India, and extending to China, Japan, and the East Indian Archipelago, during the years 1863 to 1865. In the latter year it reached Europe by way of Malta and Marseilles. It rapidly spread over the Continent, and in 1866 was imported into this country by way of Halifax, New York, and New Orleans. This epidemic prevailed extensively in the Western States, but produced only slight ravages on the Atlantic Coast, being kept in check by appropriate sanitary measures. In the same year (1866) the disease was also carried to South America, and invaded for the first time the states bordering on the Rio de la Plata and the Pacific coast of the Continent.
"Cholera never entirely disappeared in Russia during the latter half of the sixth decade, and in 1870 it again broke out with violence, carrying off a quarter of a million of the inhabitants before dying out in 1873. It spread from Russia into Germany and France and was imported, in 1873, into this country, entering by way of New Orleans and extending up the Mississippi Valley. None of the Atlantic coast cities suffered from this epidemic in 1873, and since that year the United States has been entirely free from the disease, with the exception of a few imported cases in New York harbor in 1887" (and in 1893). In 1883 an epidemic of cholera raged in Egypt and spread to many of the Mediterranean ports, and reappeared in 1885 with renewed violence. In Spain alone during this latter epidemic the total number of cases was over one-third of a million, with nearly 120,000 deaths. In 1886 cholera caused at least 100,000 deaths in Japan. In the latter part of 1886 cholera was carried from Genoa to Buenos Ayres, and crossing the Andean range invaded the Pacific coast for a second time. In Chili alone there were over 10,000 deaths from cholera in the first six months of 1887. Since then the entire Western hemisphere has been virtually free from the disease.