I don't think anyone is expecting an 18 month quarantine (and no country in the world has a safety net for people to sit home for 18 months). I expect 2-4 weeks

I don't think anyone is expecting an 18 month quarantine (and no country in the world has a safety net for people to sit home for 18 months). I expect 2-4 weeks at best in an attempt to 'flatten the curve', and then isolation of vulnerable population going forward. The spread will also slow as more and more people have the mild version and can no longer be a vector.