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Travel, Immigration bring disease into US

World travel. Immigration. Trade. Those good things often bring with them something bad. In 1347, what started in the Hebei province of China arrived in Genoa—the Black Death. It took a decade, but it hit Europe and killed millions.

Today the COVID-19, a coronavirus pandemic, similarly began in Hubei province of China. Similarly, travel and trade brought the disease around the globe. This time it arrived in days, weeks and months instead of the decades of the fourteenth century.

But this isn’t an isolated case. The movement of people into the US through immigration has reintroduced many deadly diseases.