This is a misnomer. Even if we had locked down the boarders and attempted to contain the virus within North America upon the first introduction it has a very real risk of secondary vectors through the migratory bird populations that come from Eastern Asian and North America into the north artic during the spring and summer months before returning to their winter grounds. The only true means to contain Cov-19 would have been at the site of the outbreak in Wuhan. Even with the measures of taking people's temperature for signs of fever, it seems this strain is highly contagious prior to the development of one's body immune response symptoms (fever, cough, runny nose). It also seems to have a long survival rate (more than a few minutes) outside of a host which makes for difficult tracking of potential exposure.If I had time I'd write a longer response...part of the reason we are experiencing this current "lockdown with no end in sight" is because a) the disease got out of hand here in the US coupled with b) we really, do NOT know much about the disease, and so far our attempts to find out more have been pretty pathetic.
If we had a working antibody test (we may have one) PLUS we did a decent community survey (the first is going on in California right now) we could get a good population estimate of how many people were exposed to the virus...Since we KNOW how many were hospitalized and how many died, if we knew how many were exposed, we would already know (in round numbers) rates of how many were hospitalized and rates how many died, so we would better understand the risk of opening up the country.
If an antibody test came back and told us 50% or more of the population were exposed, with our current hospitalized rates and death rates then that would be one thing....but if the antibody test told us that only 10% or less were exposed, with the same known hospitalized and some known deaths, then there would be a huge risk in re-opening the country.
This California town is testing every resident for coronavirus and antibodies | CNN
A remote Northern California hamlet became one of the first places in the world Monday to attempt to comprehensively test all of its residents for Covid-19 and the antibodies believed to make one immune from infection.www.cnn.com
The "playbook" for an epidemic/pandemic is well known....act as soon as possible to isolate those exposed, and then lock them down so it doesn't spread. We didn't do that, now we are in something of a quagmire.
If you want to read a good book, "The Plague" by Albert Camus describes what we are going through ... eerily so. Might not be the best book to read right now, ha ha. Definitely do NOT read "The Myth of Sissyphus."
I personally believe once an antibody test is performed on a large group it will show a far larger infection rate then is currently tracked.
So it is true that you can flatten the curve by slowing down the spread but there is nothing one could have done to prevent regional populations from getting the virus unless they moved into underground bunkers.
While social distancing and staying at home have helped flatten the curve is it as @Jolly_Green_Giant mentioned economically feasible for the world to continue this practice as it truthfully will need to be done until a vaccine has been mass-produced (fall of next year). And just like the influenza flu shot, new strains will need to be tracked and added to the yearly flu shot going forward.
Or would the better course of action be some sort of mask requirement and asking people to be diligent in washing hands and mask usage with the knowledge that there will be an upward trend over staying at home. Remember there are still lots of people demanded they still work from health care professionals to farmers and ranchers to store clerks and delivery people while we hide away in our homes, demanding government money because we can't pay our bills.
The third option is to just let nature runs its course and have everyone go about their normal lives. While these virus effects are new to most of us under the age of 50 due to all of the medical advances that have been very effective at controlling and reducing the death tolls it was not that long ago when this was far more common and all one needs to do is talk with their older relitives for what it was like. Or go to India which is still suffering from the effects of H1N1 (swine flu).