Nobody did, including us. I don't know why you are trying to minimize it. That is exactly what proponents of the herd immunity argument are calling for, whether they know it or not. You are not going to keep it out of nursing homes forever no matter what you do. The only way you could do it is place all the people who work there in a bubble with the patients and not let them out. That isn't feasible and you would still have to have delivers and medical transfers both in and out. We had fearsome nursing home outbreaks in my area very early on; many, many dead. They got them contained and then eliminated for a while by taking draconian steps. It came back and remains at a lower level, and is still killing. They never let up on the draconian steps. If there is spread in the community it WILL get into nursing homes. We won't even get into the vulnerable who are still working members of the community. The only way to protect the vulnerable is to limit community spread as much as possible. The idea that we can somehow build a fence around those people while the rest of us can carry on like we did in 1919 is a non-starter. This is NOT arguing for lockdowns. We can't do that forever. We can mask up, be smart, distance, and take the vaccine as soon as we are able. Hopefully we can find a sure fire treatment eventually, but that is a slim hope and one that will take a lot longer than a vaccine.