One of the few certainties coming out of the COVID-19 pandemic is that the economic impact will be felt for a long time to come. Not just weeks and months, but likely years. The viability threat encompasses efforts by companies to normalize and sustain operations—that is, remain solvent—after the pandemic has ended but the long tail of its effects continue to be felt.
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https://www.torys.com/insights/publications/2020/05/the-long-tail-of-a-pandemic-business-viability-after-the-crisis