If you're counting pandemics since 1891, I think any number between 6 and 13 is more defensible than the number 2. Let me count again, while leaving out relati

If you're counting pandemics since 1891, I think any number between 6 and 13 is more defensible than the number 2. Let me count again, while leaving out relatively minor pandemics like Zika: * Fifth cholera pandemic * Third plague pandemic (multiple outbreaks are listed) * Sixth cholera pandemic * 1915 encephalitis lethargica pandemic * Spanish flu * 1957-58 "Asian flu" * Seventh cholera pandemic * 1968-70 "Hong Kong flu" * 1977 Russian flu * HIV/AIDS pandemic * 2009-10 swine flu * COVID-19 That's 12 and doesn't count stuff like Zika, SARS, or MERS. It also doesn't count any of the Ebola epidemics. I don't know if cases or deaths are a good proxy for expected supply chain impact. SARS, for instance, had relatively few cases and deaths because it mostly broke out in well-functioning developed East Asian countries that were capable of responding to it effectively, but those same countries have outsized effects on global supply chains.