Which Pandemic got resolved in span of 18 months, I would like to know. The medieval ones took decades to burn through the planet and the spanish flu took 50 million+ and last more than 2 years.
Systems built without taking the Pandemic risk into account are the issue here, Pandemic itself we know it was coming.. we also have movies about them.
We also had pandemic plans that got completely tossed out the window. Interestingly if you read them most say to not do any of what we did, including masks.
Also, what pandemics had multiple vaccines delivered in record time? Ones that worked better than was ever hoped for. Even with that, which was the end goal, society seems unable to move on.
Systems built without taking the Pandemic risk into account are the issue here, Pandemic itself we know it was coming.. we also have movies about them.