After first contacts with
Europeans and
Africans, some believe that the death of 90–95% of the native population of the
New World was caused by
Old World diseases.
[31] It is suspected that smallpox was the chief culprit and responsible for killing nearly all of the native inhabitants of the Americas. For more than 200 years, this disease affected all new world populations, mostly without intentional European transmission, from contact in the early 16th century to until possibly as late as the French and Indian Wars (1754–1767).
[32]
In 1519
Hernán Cortés landed on the shores of what is now
Mexico and was then the
Aztec empire. In 1520 another group of Spanish arrived in Mexico from
Hispaniola, bringing with them the smallpox which had already been ravaging that island for two years. When Cortés heard about the other group, he went and defeated them. In this contact, one of Cortés's men contracted the disease. When Cortés returned to
Tenochtitlan, he brought the disease with him.
Soon, the Aztecs rose up in rebellion against Cortés and his men. Outnumbered, the Spanish were forced to flee. In the fighting, the Spanish soldier carrying smallpox died. After the battle, the Aztecs contracted the virus from the invaders' bodies.
[citation needed] Cortes would not return to the capital until August 1521. In the meantime smallpox devastated the Aztec population. It killed most of the Aztec army and 25% of the overall population.
[33] The Spanish Franciscan Motolinia left this description: "As the Indians did not know the remedy of the disease…they died in heaps, like bedbugs. In many places it happened that everyone in a house died and, as it was impossible to bury the great number of dead, they pulled down the houses over them so that their homes become their tombs."
[34] On Cortés's return, he found the Aztec army’s
chain of command in ruins. The soldiers who still lived were weak from the disease. Cortés then easily defeated the Aztecs and entered Tenochtitlán.
[35] The Spaniards said that they could not walk through the streets without stepping on the bodies of smallpox victims.
[citation needed]
The effects of smallpox on
Tahuantinsuyu (or the
Inca empire) were even more devastating. Beginning in
Colombia, smallpox spread rapidly before the Spanish invaders first arrived in the empire. The spread was probably aided by the efficient
Inca road system. Within months, the disease had killed the
Sapa Inca Huayna Capac, his successor, and most of the other leaders. Two of his surviving sons warred for power and, after a bloody and costly war,
Atahualpa become the new Sapa Inca. As Atahualpa was returning to the capital
Cuzco,
Francisco Pizarro arrived and through a series of deceits captured the young leader and his best general. Within a few years smallpox claimed between 60% and 90% of the Inca population,
[36] with other waves of European disease weakening them further. A handful of historians argue that a disease called
Bartonellosis might have been responsible for some outbreaks of illness, but this opinion is in the scholarly minority.
[37] The effects of Bartonellosis were depicted in the ceramics of the
Moche people of ancient
Peru.
[38]
Even after the two mighty empires of the Americas were defeated by the virus and disease, smallpox continued its march of death. In 1561, smallpox reached
Chile by sea, when a ship carrying the new governor
Francisco de Villagra landed at
La Serena. Chile had previously been isolated by the
Atacama Desert and
Andes Mountains from Peru, but at the end of 1561 and in early 1562, it ravaged the Chilean native population. Cronicles and records of the time left no accurate data on mortality but more recent estimates are that the natives lost between twenty and twenty five percent of their population. The Spanish historian Marmolejo said that gold mines had to shut down when all their Indian labor died.
[39] Mapuche fighting Spain in
Araucanía regarded the epidemic as a magical attempt by
Francisco de Villagra to exterminate them because he could not defeat them in the
Arauco War.
[29]
In 1633 in
Plymouth, Massachusetts, the
Native Americans were struck by the virus. As it had done elsewhere, the virus wiped out entire population groups of Native Americans. It reached
Mohawks in 1634,
[40] the
Lake Ontario area in 1636, and the lands of the
Iroquois by 1679. During the 1770s, smallpox killed at least 30% of the
West Coast Native Americans.
[41][42] The smallpox epidemic of 1780–1782 brought devastation and drastic depopulation among the
Plains Indians.
[43] This epidemic is a classic instance of European immunity and non-European vulnerability. It is probable that the
Aboriginals contracted the disease from the ‘Snake Indians’ on the
Mississippi. From there it spread eastward and northward to the
Saskatchewan River. According to David Thompson’s account, the first to hear of the disease were fur traders from the Hudson’s House on October 15, 1781.
[44] A week later reports were made to William Walker and William Tomison, who were in charge of the Hudson and Cumberland
Hudson’s Bay Company posts. By February, the disease spread as far as the Basquia Tribe. Smallpox plagued whole tribes and left few survivors. E. E. Rich described the epidemic by saying that “Families lay unburied in their tents while the few survivors fled, to spread the disease.”
[45] After reading Tomison’s journals, Houston and Houston, have calculated that out of the Aboriginals that traded at the Hudson and Cumberland houses, ninety-five percent died of smallpox.
[43] Paul Hackett adds to the mortality numbers suggesting that perhaps up to one half to three quarters of the
Ojibway situated west of the Grand Portage died from the disease. The
Cree also suffered a casualty rate of approximately seventy-five percent with similar effects found in the Lowland Cree.
[46] Not only did smallpox devastate the
Aboriginal population, it did so in an unforgiving way. William Walker described the epidemic stating that “the Indians [are] all Dying by this Distemper … lying Dead about the Barren Ground like a rotten sheep, their Tents left standing & the Wild beast Devouring them.”