I'm not an epidemiologist, or an MD, so with a large grain of salt:
Containment: Testing & contact tracing - you try to contain the disease before it widely spreads. Usually one of the early stages of fighting.
Mitigation: You can't contain any more, and you're trying to slow down the progress to avoid a large peak. Test & treat those with severe symptoms, encourage people with mild symptoms to stay home, encourage people to keep distance.
Suppression: Things have hit the fan. You need to drastically halt the progress of the epidemic. This is shelter-in-place, lockdown, quarantine etc. #staythefuckhome has become a bit more mandatory. That's pretty much where we are right now. You want to drastically reduce the number of infections in a short amount of time.
"Meaningful supply" was in the context of suppression actually taking hold. At some point, you're hopefully down to illness levels where containment or mitigation make sense again. But for that to happen, you need tests, you need PPE, you need infrastructure so you actually can contain. We're at suppression/lockdown because we failed at that the first time round.
So, it's not about avoiding the lockdown now.
The goal is lockdown now to prevent catastrophic overload and buy time to get supplies in place for later containment stages.
Hope that clarifies?
But, of course, containment is not guaranteed to work, so we might be cycling back and forth between those measures
The report #9 from the Imperial College of London details the ideas behind that cycling approach: https://www.imperial.ac.uk/media/imperial-college/medicine/s...