India is expected to grant emergency use authorization for Russia's Sputnik V COVID-19 vaccine this month or next, the Russian Direct Investment Fund (RDIF), which markets the shot abroad, told ANI on Tuesday. India has already approved two other vaccines for emergency use and has inoculated nearly 4 million people since mid-January in what the government touts as the world's biggest immunization campaign, aiming to vaccinate over 300 million people by August.