Radiation isn´t harmles. There´s no "harmless dose".
Statistically speaking there will be an increased incidence of cancer.

But we can´t predict the consequences of Fukushima,
just like we can´t capture the consequences of Chernobyl.

This is the real problem, imo.
Chernobyl isn´t "dead" or "ready" or something like this.
It´s an ongoing problem.

Also please remember the situation in northern japan and the dense population.