The freedom of the individual is, in most cases, more important than the greater good. If you disagree, you'll have to make a better case than just saying that it's not true. There's a very easy solution that doesn't infringe upon liberties: everyone makes his own choice according to the level of risk with which he's comfortable. A healthy twenty-something can probably go about his business and be fine; an at-risk person should stay home as long as necessary until it's safe.