Population history of indigenous peoples of the Americas scope of the epidemics over the years was tremendous, killing millions of people—possibly in excess of 90% of the population in the hardest hit areas—and creating one of "the greatest human catastrophe in history, far exceeding even the disaster of the Black Death of medieval Europe", which had killed up to one-third of the people in Europe and Asia between 1347 and 1351. One of the most devastating diseases was smallpox, but other deadly diseases included typhus, measles, influenza, bubonic plague, cholera, malaria, tuberculosis, mumps, yellow fever and pertussis, which were chronic in Eurasia. This transfer of disease between the
Mexican–American War campaigns May, and, on August 1, 1848, the last American soldier departed for home. All the casualties among American soldiers in the Mexican–American War amounted to 1,192 killed in action, 529 died of wounds, 362 suffered accidental death and 11,155 soldiers died from disease. Disease claimed a toll seven times greater than that of Mexican weapons. Yellow fever epidemics, "La Vomito", exacted a terrible toll. In addition, diarrhea, dysentery and typhoid claimed lives amid the poor sanitation common to the army camps of this period. The casualties caused by disease in the Mexican Army have never been estimated but were probably