In fact, unlike Fukushima, Chernobyl had no containment structure whatsoever to limit the spread of radioactivity.

FORBES: An Immodest Proposal to Spur Nuclear Energy Industry Growth -- and Global Safety

But they call for special attention due to the implications of spread of radioactivity with long term consequences including genetic effects on the population and the long time span required to bring back normalcy to the environment.

FORBES: [See update below]