Yuval Noah Harari in Time:
Many people blame the coronavirus epidemic on globalization, and say that the only way to prevent more such outbreaks is to de-globalize the world. Build walls, restrict travel, reduce trade. However, while short-term quarantine is essential to stop epidemics, long-term isolationism will lead to economic collapse without offering any real protection against infectious diseases. Just the opposite. The real antidote to epidemic is not segregation, but rather cooperation.
Epidemics killed millions of people long before the current age of globalization. In the 14th century there were no airplanes and cruise ships, and yet the Black Death spread from East Asia to Western Europe in little more than a decade. It killed between 75 million and 200 million people – more than a quarter of the population of Eurasia. In England, four out of ten people died. The city of Florence lost 50,000 of its 100,000 inhabitants.
In March 1520, a single smallpox carrier – Francisco de Eguía – landed in Mexico. At the time, Central America had no trains, buses or even donkeys. Yet by December a smallpox epidemic devastated the whole of Central America, killing according to some estimates up to a third of its population.