The biggest vaccination campaign in history is under way. More than 535 million doses of the COVID-19 vaccine have been administered across 141 countries, according to data collected by Bloomberg. The latest rate was roughly 14.5 million doses a day.
In the U.S., more Americans have received at least one dose than have tested positive for the virus since the pandemic began. To date, 143 million doses have been administered. In the last week, an average of 2.71 million doses a day were distributed, and at least 20 states have expanded vaccinations to all adults.