No they really can't. Their isolating is putting them in a different area of the LTC facility or sending them to the hospital. It's spreading through ventilation systems and workers. And after the patients beat Covid, they're sent right back in, even when the virus lingers in them. Once someone contracts it, it's too late. I saw one home put all their Covid patients in a separate wing. They claimed isolation. Then, 3 months later, almost the entire place had it.
Saw another that kept it out for almost three months. Then one person got sick, was moved to a hospital, but the whole facility blew up anyway.