Errr…. Spanish Flu in 1917-20 ish…
This is probably the best example. From my hazy memory of the online articles I’ve seen about it, it wasn’t actually Spanish. It appeared during the war, but the combatant countries didn’t want to acknowledge it for security reasons so Spain was where the outbreak was first publicized. In other words, you don’t need the internet to notice that there’s a pandemic, but you do need honest data sharing.
Then they had lockdowns and so forth, which damped it down, but people got sick of the lockdowns and started ignoring it, so it flared up again. In other words, they knew how to combat a pandemic, but the political will wasn’t there to enforce unpopular lockdowns.
Obviously, they didn’t have the modern understanding of DNA and genome sequencing, or the modern tools to create vaccines, but they did have understanding of immunization. Modern medical knowledge didn’t miraculously appear fully formed in the 21st century, it was developed over decades. My guess would be that Cold War research into bioweapons was probably one of the main drivers of developments. When HIV appeared, it took a while to identify the virus, but once they did, they immediately looked at whether they could create a vaccine. As I understand it, HIV is a very difficult moving target, so the lack of a vaccine isn’t because researchers didn’t know how to make them in the 80s, but because there are fundamental problems with making one for HIV. Other diseases like smallpox and polio have been pretty much eradicated. Those efforts started many decades ago, so it’s not the case that researchers didn’t understand how to fight disease until the internet was invented.
The WFH thing mostly affects comfortably off educated people (me being a prime example). We think everything’s going fine because we’re sitting at home getting paid to watch YouTube. Most workers are not in that situation and huge numbers are struggling. The recession probably hasn’t fully hit yet, so the next few years could be economically devastating. WFH won’t save you if the economy collapses.