Monday, April 18, 2016

Disease in Native South America


Epidemic diseases, such as smallpox, measles, plague, and influenza, were among the leading causes of the decline in population of the indigenous American populations. These diseases were brought to the Americas by European explorers and settlers, and the native populations were decimated due to their lack of previous exposure. Out of all of these diseases, smallpox was the most feared because of the high mortality rates of infected native peoples.  Of course, not all deaths can be attributed to disease. A great number of them were due to the high price and scarcity of food[1].  The Center for Disease Control and Prevention defines smallpox as “a serious, contagious, and sometimes fatal infectious disease”[2].  In regards to the 1576 smallpox epidemic, one doctor reported that “Blood flowed from the ears and in many cases truly gushed from the nose...The disease attacked primarily regions populated by Indians here and there, then regions of mixed population of Indians and Spaniards, later the Ethiopians, and now, finally the Spaniards.”[3]

He described a highly contagious and lethal scourge that killed within a few days, causing raging fevers, jaundice, tremors, dysentery, abdominal and chest pains, enormous thirst, delirium and seizures.  “Blood flowed from the ears,” the physician observed, “and in many cases blood truly gushed from the nose.”

There is some evidence that suggests that, for a long period of time, the Native Americans did not believe that the disease could be transmitted from person to person. Sometimes, they would consider these diseases to be retribution from whatever god that particular group worshipped. Thus, the native groups had various unsuccessful ways to treat smallpox.  For instance, the Aztecs began to make pilgrimages to Popocatépetl to pray to the spirit of smallpox, or etsá.. By the late 1700s, there is evidence that many natives knew that European settlers carried the disease, and that they went out of their way to avoid contact with white people.

Disease played a vital role in conquering and destroying various native empires for the Europeans, intentionally or otherwise. European diseases started in Mexico, before travelling down to Central America, and, finally, to the Incan Empire

European epidemics like smallpox, influenza, measles, and plague[4] killed millions of native Mexicans from 1520-1527. Smallpox, specifically, was credited with causing Hernando Cortes's 1521 victory over the Aztec Empire at Mexico City. It was accidentally introduced to the native population in and around Veracruz when Panfilo de Narvaez landed there on April 23, 1520. Huayna Capac, the ruler of the Inca, and 200,000 others were killed by smallpox, essentially cutting the Inca population in half. These parts of Latin America were "virgin soil", meaning that almost none of the diseases that the Europeans brought over had ever been seen by the indigenous population. Since the natives had never seen smallpox, they were not immune to it, so it caused an extremely high death rate when it spread. The Europeans, however, had developed genes that were resistant to smallpox, making it easier for them to survive the disease.

Hernando Cortes and his conquistadors began to conquer Mexico in 1519, and at the time there were approximately 25 million native people living there [5]. Only one century later, there were as few as 1.2 million people. While some of this is a result of the war and violence of two disparate cultures clashing, a significant number of these people died from disease. Almost immediately after the Europeans arrived, in 1519 and 1520, there was a smallpox epidemic that killed between 5 and 8 million people. The disease was, apparently, carried by a black slave that travelled with Cortes, and spread quickly among the natives. This was followed by two larger epidemics in 1545 and 1576, which killed as many as 17 million people.

In 1577, a Franciscan friar wrote that "Nobody had the health or strength to help the diseased or bury the dead. In the cities and large towns, big ditches were dug, and from morning to sunset the priests did nothing else but carry the dead bodies and throw them into the ditches." These smallpox outbreaks devastated the population and , more importantly, killed many of the Aztec leaders while leaving the immune European leadership relatively untouched. The conquest of Mexico was critically important in the colonization of the Americas by Spain. By conquering Mexico, Spain gained access to the Pacific Ocean, thereby opening the route to the Asian markets. The incredible change in population in such a short amount of time also led to an upset in the balance of food production.

The Inca Road System made the spread of smallpox that much easier throughout the empire. It consisted of two roads that stretched throughout the entire empire. The Inca Road System was highly trafficked and the many people who travelled along it spread the disease with them wherever they went. Besides Huayna Capac, the Inca lost many military and political leaders to disease as well. This is, in large part, what helped Francisco Pizarro to conquer the Inca Empire. When Huayna Capac died, his two sons began a civil war over who should rule, essentially cleaving the empire in two, thus making it even easier for the Spanish conquistadors to succeed in their conquest. Besides the military and political strife, smallpox had a lasting effect on the psychology of the nation. The disease cause rampant fear and hysteria and must have "shaken the confidence of the Incas that they still enjoyed the esteem of their gods"[6].  If disease had not practically wiped out the population meant to defend the Incas from attack and crippled their morale, they might have been able to stave off the Spanish invaders, even if it was not for long.

The Portuguese also spread disease unintentionally when the conquered Brazil. There were two significant epidemics: One in 1562 and a larger one in 1563. These outbreaks were a mixture of smallpox, tuberculosis, measles, and influenza and halved the population, creating competition over use of the declining labor force. The population shrink also made the natives more easily conquerable because they were outmatched in technology and could no longer rely on their previously overwhelming numbers to resist conquest.

Some of the effects of disease on these people were sociocultural.  For example, families and communities decreased in size and were therefore forced to fuse with nearby clans.  This caused a shift in societal norms and caused a spread of culture and customs across different populations and a change in cultural identities.  Another reason for the population decrease might have not necessarily had to do with the actual death rate, and may have had to do with the fact that smallpox can cause survivors to become sterile.[7]

Another thing that was affected by disease was the encomienda.[8]  Spanish conquistadors would be given a grant of land that included any native families or communities already occupying that land.  Ideally, the natives would supply tribute of some kind, such as animals, crops, or wealth, to their feudal lords.  Another option was for the natives to provide labor, say in a silver mine.  In exchange, the conquistador who owned the land would take care of the natives and convert them to Christianity.  In Peru, these encomiendas were built on the back of the fallen Inca Empire.  Although the natives were used as a labor force, they were supplanted by African imported slaves, at least in part because of their increased immunity to diseases, which apparently made the African slaves a better investment.[9]

Certain members of the Catholic Church realized the toll that disease brought from the European explorers and settlers was having on the natives.  According to Fray Toribio de Benavente, a Catholic missionary, the Spanish "do nothing but command. They are the drones who suck the honey which is made by the poor bees, the Indians".[10]  This sentiment was echoed by many clergymen, and the observation of the rampant death caused by disease contributed to La Leyenda Negra (Black Legend).  Leyenda Negra was, by some accounts, propaganda from England, the Netherlands, France, Germany, and Italy to portray the Spanish as corrupt tyrants who mistreated the natives left in their charge. This was part of the reason that the king of England, William of Orange, supported a rebellion of Dutch Protestants against the immoral Spanish rule.  However, this was based on the ideas of 16th century critics such as Bartolomé de las Casas, the bishop of Chiapas, who saw the mistreatment of the natives firsthand.  The solution that he suggested in his writings was to replace the current Native American labor force with that of African slaves, which, eventually, they did. This was not, however, particularly helpful in the end, and he came to regret his position in encouraging the African slave trade.[11]

Spanish missionary, Bernardino de Sahagún, described the epidemics as “a great havoc. Very many died of it. They could not walk. . . . They could not move; they could not stir; they could not change position, nor lie on one side; nor face down, nor on their backs. And if they stirred, much did they cry out. Great was its destruction.”[12]  Disease contributed to many things that affected the native populations of Latin America.  It caused millions of deaths, the weakening of common defense and the subsequent collapse of long lived empires, the defeat and essential enslavement of the remaining natives, a great deal of sociocultural change, and the eventual birth of the Trans- Atlantic African slave trade.  Epidemics, such as syphilis, measles, mumps, bubonic plague, and most of all smallpox, caused the severe depopulation of native groups and struck assorted Native American communities with varying frequency from the 16th to the 19th century.

Without diseases like smallpox, it is less likely that European invaders would have been able to conquer that native populations of South America so quickly and thoroughly.  The arrival of European epidemics and the decline of the Native American populations are inexorably linked.  The indigenous people of South America were some of the first victims of early European biological warfare.  Their lack of natural immunity led to an intense wave of death that swept through South America from the 15th century all the way to the 19th century.



[1] Lockhart, James, and Enrique Otte. Letters and People of the Spanish Indies, Sixteenth Century. Cambridge: Cambridge University Press, 1976.
[2] “Smallpox Disease Overview." CDC Smallpox. Accessed March 13, 2016. http://emergency.cdc.gov/agent/smallpox/overview/disease-facts.asp.
[3] Torquemada, Juan De, and Miguel León-Portilla. Monarquía Indiana. México: Instituto De Investigaciones Históricas, Universidad Nacional Autónoma De México, 1975, 642-643.
[4] Bethell, Leslie. The Cambridge History of Latin America. Cambridge: Cambridge University Press, 2013, 213.
[5]Bethell, Leslie. The Cambridge History of Latin America. Cambridge: Cambridge University Press, 2013, 182.
[6] Crosby, Alfred W. The Columbian Exchange: Biological and Cultural Consequences of 1492: 30th Anniversary Edition. Westport, CT: Greenwood Press, 2003, 57.
[7] Bethell, Leslie. The Cambridge History of Latin America. Cambridge: Cambridge University Press, 2013, 329.
[8]  Ibid., 223.
[9] Ibid., 364.
[10] Lockhart, James, and Enrique Otte. Letters and People of the Spanish Indies, Sixteenth Century. Cambridge: Cambridge University Press, 1976.
[11] Casas, Bartolomé De Las. Breuissima Relacion De La Destruycion De Las Indias. Fue Impressa ... Enla ... Ciudad De Seuilla: En Casa De Sebastian Trugillo ..., 1552.
[12] Crosby, Alfred W. The Columbian Exchange: Biological and Cultural Consequences of 1492: 30th Anniversary Edition. Westport, CT: Greenwood Press, 2003, 56.

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