
Hungarian officials said the leak probably came from the Budapest-based Institute of Isotopes, the International Atomic Energy Agency said in a statement.
The institute has acknowledged emitting higher quantities of iodine-131 than normal but denies being the source of any elevated radiation.
"Radiation levels in Hungary were only a little higher in Budapest than elsewhere," said Institute of Isotopes director Mihaly Lakatos.
"If the source of heightened radioactivity had been Budapest, the levels measured here should have been much higher."
On November 11, several countries including Poland, Slovakia, Austria, Hungary and the Czech republic warned the IAEA that they had detected an increase in iodine-131.
France's nuclear watchdog also reported on November 15 that very small concentrations of iodine 131 had been detected in the air.
The international agency said the levels detected were low and that there was no risk to human health.
Officials said the amount of the radioactive element released was equivalent to 0.01 microsieverts. The average person is exposed to 2,400 microsieverts annually through background radiation.



happened in spring 2011 at same place only they forgot to tell anyone or the citizens living in immediate vicinity.
The place is not a nuclear plant, but a simple isotope-factory. Creating isotopes for chemical-laboratories - military for example - for measurements in really expensive instruments. Not really dangerous just alerted the measuring devices. Allegedly collecting the measurements took this long and that's why it was not reported until other countries picked up i-131 that supposedly Hungary released. Much bigger problem is the (ir)responsibility reporting: it wasn't coming from Hungarian authorities, but from neighboring countries...
Good thing about i-131 is that is has a half-life of 7 days and can be "stopped" with your thyroid-gland by consuming some iodine.
As you can see the premises look good! :D
[Link]
As Fukushima and Chernobil radiation is persistently working in the background, I think in no time surviving people on Earth will be radioactive mutants in one way or another.