The UN Scientific Committee on the Effects of Atomic Radiation  (Unscear) is the equivalent of the Intergovernmental Panel on Climate  Change. Like the IPCC, it calls on the world’s leading scientists to  assess thousands of papers and produce an overview. Here is what it says  about the impacts of Chernobyl. 
 Of the workers who tried to contain the emergency at Chernobyl, 134  suffered acute radiation syndrome; 28 died soon afterwards. Nineteen  others died later, but generally not from diseases associated with  radiation(
6).  The remaining 87 have suffered other complications, included four cases  of solid cancer and two of leukaemia. In the rest of the population,  there have been 6,848 cases of thyroid cancer among young children,  arising “almost entirely” from the Soviet Union’s failure to prevent  people from drinking milk contaminated with iodine 131(7). Otherwise,  “there has been no persuasive evidence of any other health effect in the  general population that can be attributed to radiation exposure.”(8)  People living in the countries affected today “need not live in fear of  serious health consequences from the Chernobyl accident.”(9)