Virulent សាហាវ smallpox ជំងឺអុត pneumonia រោគរលាកសួត
Devastating ដែលធ្វើអោយហិនហោច outbreak ការកើតមាន
Epidemic រោគ virgin មនុស្សគ្មានការពិសោធន៍
A huge
loss of life resulted from the introduction of Old World diseases into the
Americas in the early sixteenth century. The inhabitants of the Americas were
separated from Asia, Africa, and Europe by rising oceans following the Ice Ages,
and, as a result, they were isolated by means of this watery barrier from
numerous virulent epidemic
diseases that had developed across the ocean, such as measles, smallpox, pneumonia
and malaria. Pre- Columbian Americans has a relatively disease-free environment
but also lacked the antibodies needed to protect them from bacteria and viruses
brought to America by European explorers and colonists. A devastating outbreak
of disease that strikes for the first time against a completely unprotected
population is known as a virgin
soil epidemic. Virgin soil
epidemics contributed to an unbelievable decline in the population of native
inhabitants of the Americas, one that has been estimated at as much as an 80
percent decrease of the native population in the centuries following the
arrival of Europeans in the Americas.
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