Russian Covid vaccine Sputnik V, with over 3 million doses already administered, was the most used shot in the capital city of Mexico.  The first component of Sputnik V (Sputnik Light) is also being increasingly used in the city’s revaccination campaign as a booster. According to Eduardo Clark, General Director of the Digital Agency For Public Innovations (ADIP) of the City of Mexico (CDMX), Sputnik V accounts for 40 percent of all COVID vaccines given to people in Mexico City.