The Transmission of Diseases from Livestock
The signs at the Philadelphia International Airport are bold and make a clear point. The bright, yellow billboards all but shout: "Keep Foot and Mouth Disease out of America." Soon after seeing these signs upon entrance to the airport, travelers are greeted by customs agents who check documentation and bags to insure that the traveler has not been prone to the disease on his journeys. Any traveler exhibiting the warning signs of an individual who carries the disease is quickly swept away- removed from the general populace in order to prevent possible spreading of the disease.
The above precautions may seem extreme. Then again, the precautions may appear normal in a world that has quickly strengthened airport security in response to recent terrorist activities. Neither of these reactions to the security checks would be fully accurate. The security checks preventing free entrance by individuals who have come into contact with animals or areas that house animals abroad are an innovation designed to prevent the most common method for spreading disease. These precautions have been implemented in order to prevent the spread of diseases infecting livestock.
Throughout the course of history, diseases have been the greatest killers of humans. In fact, the winners of most wars were simply the ones who proved less susceptible to the germs carried by the enemy (Diamond, p. 197). Diamond correctly points out, then, that diseases have been the largest shaper of history. For instance, what would the world look like now if the Native Americans had carried germs that were far more potent than the Spanish conquistadors? (p. 197)
The diseases that have been the great molders of the human experience are very often and quite easily traced back to animals, specifically livestock. Food production was seen relatively early in history of civilization as a better means for providing for a great number of people than the hunter-gatherer model that was once the primary model of existence. The success of food production in maintenance of human life leads to a society which has become dependant on farming, ranching, and other ways of life that produce foods from animals. The increased number of individuals able to be supported by a society supported by agriculture serves as an important factor in the spreading of disease. The most common method for spread of disease is direct transmittance from the animals to the humans.
Plagues and Peoples written by William H. McNeill follows the patterns of epidemics and endemics within human history. It is within this history that McNeill finds parallels between diseases and humans in the forms of microparasitism and macroparasitism. Merely from the title, McNeill gives equal importance to viruses and humankind. In several instances, humans behave the same way viruses, bacteria, and parasites do in order to survive and to compete. Surprisingly enough, McNeill’s overarching theme can be summarized using his last sentence, asserting that “Infectious disease which antedated the emergence of humankind will last as long as humanity itself, and will surely remain, as it has been hitherto, one of the fundamental parameters and
One of the determining factors of a person’s survival from the variola virus during the period of the American Revolution in North America was race. Even though the variola virus in and of itself does not factor in race to determine whether to infect one person over another, race did factor in significantly in the survival rate when exposed to the virus. Part of Fenn’s argument is that Europeans had an innate immunity over diseases that those who were not from Europe did not have. She argued that since Europeans come from a world with a large array of diseases their bodies had built up certain protections against the variola virus. This innate immunity that Fenn discussed brought about certain mechanisms within the body that pr...
In the New World, domestic animals were not common and therefore most meat was hunted and scavenged for, whereas in the Old World domestic animals such as cows, horses, pigs, etc. were very commonplace in villages of the same stature as those in the Americas thus living styles were different with different habits. In addition, the epidemiological imbalance came from the amount of diseases deriving from the old world and its domestic animals compared to the diseases found in the Americas. Overall, the old world, Europe, had many more diseases which transmitted easily. Also, Mann calls the disease imbalance the most important fact in world history because when these diseases were transmitted to the Americas, it dictated the first 150 years of Native American life as so many were
The Columbian Exchange was a trade network that was indisputably a major event in world history due to the exchange of ideas, crops, animals, and diseases between the Old World and the New World, making the world “smaller”; it is undeniable that had the Columbian Exchange not happened, all of our lives today would be drastically different. During 1450 to 1750 – the time period of the Columbian Exchange – the mumps, a virus that was originally discovered in Europe, was transferred from the Old World to the New; in both hemispheres, diseases were transmitted unknowingly until people started noticing the correlations between those who got sick and what might have caused them to contract it, which led to diseases being used as weapons in biological warfare, causing the indigenous peoples to die off and allowing the Europeans economic prosperity.
...Lord, 4). To put this in perspective, “The 150 years after Columbus’s arrival brought a toll on human life in this [the Western] hemisphere comparable to all of the world’s losses in World War II,” (Lord, 4). In his book, Plagues and Peoples, William McNeill attributes this population reduction with the old world diseases that “swept across the hemisphere far faster than the Europeans that brought them,” (Lord, 1).
The Columbian exchange was the widespread transfer of various products such as animals, plants, and culture between the Americas and Europe. Though most likely unintentional, the byproduct that had the largest impact from this exchange between the old and new world was communicable diseases. Europeans and other immigrants brought a host of diseases with them to America, which killed as much as ninety percent of the native population. Epidemics ravaged both native and nonnative populations of the new world destroying civilizations. The source of these epidemics were due to low resistance, poor sanitation, and inadequate medical knowledge- “more die of the practitioner than of the natural course of the disease (Duffy).” These diseases of the new world posed a serious
William H. McNeill makes a monumental contribution to the knowledge of humanity in his book Plagues and Peoples. He looks at the history of the world from an ecological point of view. From this viewpoint the history of human civilization is greatly impacted by changing patterns of epidemic infection. Plagues and Peoples suggests that "the time scale of world history...should [be] viewed [through] the "domestication" of epidemic disease that occurred between 1300 and 1700" (page 232). "Domestication" is perceived "as a fundamental breakthrough, directly resulting from the two great transportation revolutions of that age - one by land, initiated by the Mongols, and one by sea, initiated by Europeans" (page 232). This book illustrates how man's environment and its resident diseases have controlled human migration, as well as societal successes and failures. McNeill discusses the political, demographical, and psychological effects of disease on the human race. He informs his audience that epidemics are still a viable threat to society, and warns of potential future consequences.
The Spread of Disease In the New World The extraordinary good health of the natives prior to the coming of the Europeans would become a key ingredient in their disastrous undoing. The greatest cause of disease in America was epidemic diseases imported from Europe. Epidemic diseases killed with added virulence in the " virgin soil" populations of the Americas. The great plague that arose in the Old World never emerged on their own in the western hemisphere and did not spread across oceans until Columbus' discovery.
Microbes from Europe introduced new diseases and produced devastating epidemics that swept through the native populations (Nichols 2008). The result from the diseases brought over, such as smallpox, was a demographic catastrophe that killed millions of people, weakened existing societies, and greatly aided the Spanish and Portuguese in their rapid and devastating conquest of the existing American empires (Brinkley 2014). Interaction took place with the arrival of whites and foreigners. The first and perhaps most profound result of this exchange was the imp...
The adoption of the rail system in the United States not only revolutionized the transportation of people, goods, and information but also revolutionized the transportation of pathogens. The rapid growth in transportation, the cramped living spaces, travel arrangements and poorly organized sanitation protocols exacerbated the rampant spread of disease. The lacking public health policies of the time showed that the United States was not ready for the silent killers that would accompany passengers as they rode the rails. The United States government was forced to find a way to deal with the spread of disease through out the nation’s railways.
Transportation and migration has been important to Homo sapiens since the time of the hunter-gatherer. Humans have used the different methods of transportation since this time for a number of reasons (i.e. survival in the case of the hunter-gatherer, to spread religion, or in order to search for precious minerals and spices). What few of these human travelers failed to realize is that often diseases were migrating with them. This essay will look at the spread of the disease smallpox. In the following I hope to reveal the history of smallpox as well as why it devastated the New World.
The great explorations and subsequent migrations of Europeans to the Americas in the 15th-18th centuries opened up those entire continents to the fatal impact of the infectious diseases of Europe. European conquests owed a good deal of their success to the effects of disease on the indigenous peoples, especially smallpox in the Americas. Before Spanish conquest of the New World, there was no sickness or great health related issues that Natives were forced to face. That all changed, however, when European explorers, Spanish conquistadors in particular, unknowingly brought the deadly disease of smallpox into Latin America. A recollection of days before the Spanish by an Indian of the Yucatan from the book of Chilam Balam of Chumayel shows just how disease free natives were before the Spanish arrival: “There was then no sickness; they had no aching bones; they had then no high fever; they had then no smallpox; they had then no burning chest; they had then no abdominal pain; they had then no consumption; they had then no headache. At that time the course of humanity was orderly. The foreigners made it otherwise when they arrived here.” Then, after the Spanish came to the New World and spread smallpox to the natives, over 95% of them were killed. The Taino population of Hispaniola that was once estimated to be as large as 8 million went virtually extinct. Central Mexico’s population went from 15 million in 1519 to 1.5 million a century later. ...
Although populations in ancient societies suffered attacks, invasions, starvation, and persecution, there was a more efficient killer that exterminated countless people. The most dreaded killers in the ancient world were disease, infections and epidemics. In many major wars the main peril was not gunfire, nor assault, but the easily communicable diseases that rapidly wiped out whole divisions of closely quartered soldiers. Until the time of Hippocrates, in the struggle between life and death, it was, more often than not, death that prevailed when a malady was involved. In the modern world, although illness is still a concern, advances in thought and technique have led to the highest birth rates in recorded history. No longer is a fever a cause for distress; a quick trip to the store and a few days of rest is the current cure. An infection considered easily treatable today could have meant disablement, even death to an ancient Greek citizen.
Throughout history many different diseases have infected the world. Such diseases consist of measles, mumps, malaria, typhus and yellow fever. Many of these diseases are caused by different things and originated in different countries.
One of the world’s most dreaded plagues for centuries, smallpox is now eradicated. Vaccination programs were pushed worldwide by the World Health Organization (WHO) and the disease was eliminated from the world. This push resulted in the last naturally occurring case in the world being almost 40 years ago. Once eradicated the once routine or mandatory vaccinations were stopped for the general public and it was deemed no longer necessary to prevent the disease. Although currently eradicated worldwide, two medical laboratory stockpiles still remain in Russia and the United States. With these stockpiles in existence the possibility of bio terrorism emerges and fear of these stockpiles getting into the wrong hands and being weaponized for use against the public is rising. The smallpox disease is highly contagious and easily communicable and currently there is no cure for this disease. If reintroduced, an epidemic would be devastating worldwide.