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A medical worker administers a shot of Russia's Sputnik V coronavirus vaccine at a vaccination center in Gostinny Dvor, a huge exhibition place in Moscow, July 12, 2021. Russia\\u2019s health officials have given a go-ahead to testing a combination of the AstraZeneca coronavirus shot and the single-dose version of the domestically developed Sputnik V vaccine.
Pavel Golovkin/AP
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