Did anyone see the spread of Covid through nursing homes coming before? It seems quite obvious in hindsight - yet, I didn't even mention it above. Some countries report almost half of the deaths from those environments.
(Would it have made any difference? I mean, would people have emphasized patient safety, etc.? I think it's implausible, but has anyone tested if this isn't just some statistical effect, due to the concentration of old-aged people, with chronic diseases?)