The answer can be found on a Department of Homeland Security -funded study. If you tell the people facts about a nuclear power plant accident or a dirty bomb terrorist attack it can cause severe disturbance on economy, people get scared , don't spend money, the investors and workers leave the area etc. This all could end up to fifteen times as costly as hiding the facts.
So the real costs of the disaster could not any more be connected to the accident and people just pay for their costs of medical care by themselves. That's the way how nuclear industry worldwide have been acting since the beginning of the nuclear era, and this is the way how IAEA wants it to be. The WHO must obey IAEA decisions and their VETO: studies that tell something different are not allowed to be made public. The lack of information is a powerful tool.
Japan government have used this tool with both hands engaged - Japanese people is being hidden the real severity of Fukushima Daichi -accident. People, especially children are suffering hard for this type of covering up the truth. How long does it take before the crouds in Japan find out what's really going on there and get angry and frustrated. This could mean a real "changing of the guards" in Japan, a revolution of ethics and moral thinking that could lead to a society of sustainable values and fresh environmental thinking, but also bring back the old values like importance of hard work, honesty, honour and social responsibility.
A large scale employment of renewable energy production systems could lead Japan out of this nightmare but there is still awful lot to do in containing the nowbeing nuclear disaster, a task seem to be almost impossible.
Meanwhile, the children and families now living in badly contaminated areas should be offered safe living at areas less contaminated and TEPCO and other nuclear power companies should pay real compensations for their lost homes and property.
We are lucky to have social media and websites like Fukushima Diary, Enformable, Fairewinds, EX-SKF, ENENEWS, Beyond Nuclear and numerous other homesites or blogs informing the people around the world of the real studies, independent news and relevant facts on energy and nuclear issues. For many individuals living in danger areas this has been the only way to get trustworthy information - even governments and politicians have been informed this way.
But the first thing to do now is to throw this kind of "profitable" pro-nuke-polluted-world-studies