| epidemiology of sv-40 simian virus in different regions of the russian federation. | multiplication of poliomyelitis virus for vaccine production in 1955-1961 was realized in kidney cell culture from m. rhesus naturally infected with sv-40 simian virus. hence, some lots of the vaccine were contaminated with this virus. it was found that sv-40 is oncogenic for laboratory rodents. since 1963, in accordance with who recommendation, green monkey kidneys containing no sv-40 were used instead of m. rhesus kidneys. overall vaccination of the population with poliomyelitis vaccine in 195 ... | 2009 | 21116508 |