Which county has administered the most coronavirus vaccine injections?br More than 40 countries around the world have begun the vaccination process.br According to Business Insider, rich and middle-income countries have secured almost all the available vaccine supply.br According to data, the U.S. had administered roughly 1.94 million COVID-19 vaccine doses.br Following behind the U.S. is China, which has administered at least 1 million COVID-19 vaccine doses.br Across the world, there have been more than 4.3 million COVID-19 vaccine doses given.