One of the interesting things that came out of the Chernobyl disaster was that everyone was expecting hundreds of thousands of cancer deaths from the surrounding areas. In the end it was estimated to have killed about 4,000 people.
http://news.bbc.co.uk/1/hi/health/4216102.stmAs with many of these terrible tragedies the world leared alot from it in this case about radiation exposure, it turns out that low level radiation doses were a whole lot less dangerous than was previously thought.
Dr Burton Bennett, chairman of the Chernobyl Forum and an authority on radiation effects, said: "This was a very serious accident with major health consequences, especially for thousands of workers exposed in the early days who received very high radiation doses, and for the thousands more stricken with thyroid cancer.
"By and large, however, we have not found profound negative health impacts to the rest of the population in surrounding areas, nor have we found widespread contamination that would continue to pose a substantial threat to human health, within a few exceptional, restricted areas."