Constant connectivity defines 21st-century life, and the infrastructure undergirding it all is both digital (the internet and our social media platforms) and physical (the gig economy, e-commerce, global workplaces). Despite a tumultuous first two decades of the century, much of our connected way of life has evaded the stress of a singular global event. The possibility of a global pandemic currently posed by the new coronavirus threatens to change that altogether. Should the virus reach extreme levels of infection globally, it would very likely be the first true test of the 21st-century way of life, laying bare the hidden fragility of a system that has long felt seamless.

The most obvious example is our global and connected economy, which has already weathered a deep recession. There could be shortages in crucial imports.

On Thursday, the Food and Drug Administration reported one of its first shortages of a drug for human use (they did not specify which) as a result of supply chain disruptions. The agency is monitoring 63 manufacturers in China supplying medical devices “that may be prone to potential shortage if there is a supply disruption.”

Worries about the future of the global economy have had interest rates headed toward to record lows while oil prices have dropped. This past week the United States saw its worst weekly decline for stocks since the 2008 financial crisis. Major indexes around the world fell between 4 percent and 12 percent.