It's more severe and the ease of how it spreads is what is alarming. Any virus that really cannot be controlled other than quarantine is never an over-reaction

It's more severe and the ease of how it spreads is what is alarming. Any virus that really cannot be controlled other than quarantine is never an over-reaction, infact often is the case people under-react to them. People are dying, at a low rate, but they are dying, so it's much better to be pro-active.