Because 0% of people have died of smallpox in the past year.
This is the essence of the 'public health paradox' that I have posted about on this board, without any ensuing debate on that point.
If you want to debate this out, you do have the opportunity to debate it out, and at least on my part, it will be civil.
If you want to ram your opinion down people's throat using the tool of constant repettion but no debate, you will get it rammed back.
In a battle of wills, where you pretend that the subject has gone silent because nobody can counter your posts, despite the fact they have been countered a while ago, but people just don't want to have the whole discussion all over again, you lose. In a civil discussion, where the debate develops and everybody acknowledges the points that were already made and grows from that, everybody wins.