. . "Sovietmicrobiologist,virologist" . . "1909-11-14Z"^^ . "1993Z"^^ . "1909Z"^^ . "1993-06-11Z"^^ . "Mikhail Petrovich Chumakov (Russian: \u041C\u0438\u0445\u0430\u2032\u0438\u043B \u041F\u0435\u0442\u0440\u2032\u043E\u0432\u0438\u0447 \u0427\u0443\u043C\u0430\u043A\u2032\u043E\u0432) (November 14, 1909 \u2013 June 11, 1993) was a Soviet microbiologist and virologist most famous for conducting pivotal large-scale clinical trials that led to licensing of the Oral Polio Vaccine (OPV) developed by Albert B. Sabin."@en . . . . "Mikhail Petrovich Chumakov"@en . "Chumakov, Mikhail Petrovich"@en . . . .