Top 10 Pandemic IN The World ( পৃথিবীর ইতিহাসে ভয়ঙ্কর 10 টি মহামারী)

Описание: পৃথিবীর ইতিহাসে ভয়ঙ্কর 10 টি মহামারী
10 OF THE WORST PANDEMICS IN HISTORY

Scientists and medical researchers have for years have differed over the exact definition of a pandemic but one thing everyone agrees on is that the word describes the widespread occurrence of disease, in excess of what might normally be expected in a geographical region.

Cholera, bubonic plague, smallpox, and influenza are some of the most brutal killers in human history. And outbreaks of these diseases across international borders, are properly defined as pandemic, especially smallpox, which throughout history, has killed between 300-500 million people in its 12,000 year existence.

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