Virgin-soil epidemic

The term "virgin soil epidemic" was coined by Alfred Crosby The concept would later be adopted wholesale by Jared Diamond as a central theme in his popular book Guns, Germs and Steel as an explanation for successful European expansion. == Historical instances ==

Native American epidemics Due to limited interaction between communities and more limited instances of zoonosis, the spread of infectious diseases was generally hampered in Native American communities. This contrasted with Eurasia, where a large number domesticated animals in close contact with large human populations would lead to more frequent zoonotic diseases, which would then in turn spread between human populations more easily due to trade and warfare. Native Americans were not exposed to this latent pool of circulating Eurasian diseases until the European colonization of the Americas, which then led to frequent virgin-soil epidemics among Native Americans. Cocoliztli epidemics fever agent from the Cocoliztli epidemics.|upright=1.2A series of epidemics of unknown origin caused major population collapses in Central America in the 16th century, possibly due to little immunological protection from previous exposures. While the pathogenic agents of these so-called Cocoliztli epidemics are unidentified, suspected pathogenic agents include endemic viral agents, Salmonella, or smallpox. Australian Aboriginal epidemics The European colonization of Australia led to major epidemics among Aboriginal Australians, primarily due to smallpox, influenzas, tuberculosis, measles, and potentially chickenpox. Other instances With malaria spreading in the Caribbean islands after European–African contact, the immunological resistance of African slaves to malaria in contrast to the immunologically defenseless locals might have contributed to African slave trade. Novel and rapid-spreading pandemics such as the Spanish flu are occasionally referred to as virgin-soil pandemics. == Debate ==

image of the smallpox virus, a historically common agent of virgin-soil epidemics|upright=.85Research over the last few decades has questioned some aspects of the notion of virgin-soil epidemics. David S. Jones has argued that the term "virgin soil" is often used to describe a genetic predisposition to disease infection and that it obscures the more complex social, environmental, and biological factors that can enhance or reduce a population's susceptibility. Paul Kelton has argued that the slave trade in indigenous people by Europeans exacerbated the spread and virulence of smallpox and that a virgin-soil model alone cannot account for the widespread disaster of the epidemic. The debate, as regards smallpox (Variola major or Variola minor), is sometimes complicated by problems in distinguishing its effects from those of other diseases that could prove fatal to virgin-soil populations, most notably chickenpox. Thus, the famous virologist Frank Fenner, who played a major role in the worldwide elimination of smallpox, remarked in 1985, "Retrospective diagnosis of cases or outbreaks of disease in the distant past is always difficult and to some extent speculative." Cristobal Silva has re-examined accounts by colonists of 17th-century New England epidemics and has interpreted and argued that they were products of particular historical circumstances, rather than universal or genetically inevitable processes. Historian Gregory T. Cushman claims that virgin-soil epidemics were not the major cause of deaths due to disease among Pacific Island populations. Rather, diseases like tuberculosis and dysentery were able to take hold in Pacific Island populations that had weakened immune systems because of overworking and exploitation by European colonizers. Historian Christopher R. Browning writes that "Disease, colonization, and irreversible demographic decline were intertwined and mutually reinforcing" in reference to virgin-soil epidemics during the European colonization of the Americas. He contrasts the rebound of the European population following the Black Death with the lack of such a rebound across most Native American populations, attributing this differing demographic trend to the fact that Europeans were not exploited, enslaved, and massacred in the aftermath of the Black Death like the Indigenous inhabitants of the New World were. "Disease as the chief killing agent," he writes, "does not remove settler colonialism from the rubric of genocide". Following this work, historian Jeffrey Ostler has argued that, in relation to European colonization of the Americas, "virgin soil epidemics did not occur everywhere and ... Native populations did not inevitably crash as a result of contact. Most Indigenous communities were eventually afflicted by a variety of diseases, but in many cases this happened long after Europeans first arrived. When severe epidemics did hit, it was often less because Native bodies lacked immunity than because European colonialism disrupted Native communities and damaged their resources, making them more vulnerable to pathogens." ==See also==