Once one reads the last paragraph of the Copy/ Paste below it appears clearly that the world as a whole , or at least the most powerful nations , failed to learn any lesson from the 1918 pandemic.

Today people in all countries are restricted to the very same -non pharmaceutical interventions they used more than one hundred years ago .
Curiously we humans put people on the moon, fought high tech driven devastating wars again one another, sent spacecrafts into intersideral space, manufactured deadly atomic or bacteriological weapons..
The artificial intelligence revolution we all praise
so much today was unable to foresee the dire situation and the bleak future we are facing right now.

The 1918 Flu
CDC
Center for Disease Control and Prevention


The 1918 influenza pandemic was the most severe pandemic in recent history. It was caused by an H1N1 virus with genes of avian origin.

Although there is not universal consensus regarding where the virus originated, it spread worldwide during 1918-1919.

In the United States, it was first identified in military personnel in spring 1918. It is estimated that about 500 million people or one-third of the world’s population became infected with this virus. The number of deaths was estimated to be at least 50 million worldwide

Mortality was high in people younger than 5 years old, 20-40 years old, and 65 years and older. The high mortality in healthy people, including those in the 20-40 year age group, was a unique feature of this pandemic.

While the 1918 H1N1 virus has been synthesized and evaluated, the properties that made it so devastating are not well understood.

With no vaccine to protect against influenza infection and no antibiotics to treat secondary bacterial infections that can be associated with influenza infections, control efforts worldwide were limited to non-pharmaceutical interventions such as isolation, quarantine, good personal hygiene, use of disinfectants, and limitations of public gatherings, which were applied unevenly.

https://www.cdc.gov/flu/pandemic-resources/1918-pandemic-h1n1.html