I know you say worst case scenario, but this is very unlikely to happen. If it did, it would be over the next one to three years and move through peaks and dips and even then the 3-4% death rate is almost certainly too high. I don't want to drag up CFR again but the death rate will be lower than 3%. That said, I don't disagree with building the hospitals, even if they are currently empty. If the virus does breakout in Argentina, like in Italy or the UK, those facilities will be needed.
I agree with Perry, for the most part, about the lockdown. If COVID-19 move through these peaks and drops over two years, do we stay in lockdown for two years? I know a woman and husband that have two kids who has already run out of money. My father-in-law lives by her and started a Facebook group in the barrio to get people to contribute food. My brother-in-law delivered it yesterday and she was crying saying she works, her husband works, and she cannot believe that after just a few weeks she cannot feed her kids.
I am sure she is not alone. So, let's say the lockdown was legitimately needed in the first place. When should it be lifted? Do you think it could be and should be in place for the next two years if COVID-19 remains present (worse some months, better others)?
And the way Bajo talks about the Spanish Flu above is a bit pointless... different situations, different viruses. For a start, 50 to 100 million deaths is not correct. I think it was around 20 million to 100 million deaths, estimates. Saying, "now we are 7.7 billion means the risk is over 300 million people" does not make sense because we are not dealing with Spanish flu so the data of that outbreak cannot be directly correlated with coronavirus. COVID-19 could infect many more or it could infect many less. Spanish Flu can be used to show how a pandemic spreads and is actually a decent template for the worst case scenario for COVID-19, but it should not be a direct comparison.