There was no "yet" with Chernobyl. People died within weeks.
http://en.wikipedia.org/wiki/Fukushima_Daiichi_nuclear_disas...
As usual with long-term exposure, cause of death becomes a statistical and actuarial question.
Incidentally, Chernobyl almost sterilised large areas of Europe and Russia. One of the official documentaries explains what would have happened if the initial suicide squad efforts had failed - it would have been far worse than anything in history.