FILE - In this Feb. 19, 2021 file photo, a doctor prepares a dose of the Sputnik V COVID-19 vaccine at the Ana Francisca Perez de Leon II public hospital, in Caracas, Venezuela. Brazil's health regulator rejected on Monday, April 19, 2021, a request from several states to import almost 30 million doses of the Sputnik V vaccine, citing safety concerns, prompting criticism from the Russian government. (AP Photo/Matias Delacroix, File)
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