Washington Post: “The Biden administration is buying 500 million doses of Pfizer’s coronavirus vaccine to donate to the world, as the United States dramatically increases its efforts to help vaccinate the global population, according to three people familiar with the plans. President Biden is slated to announce the plan at the G-7 meeting in Britain this week amid growing calls for the United States and other rich countries to play a more substantial role in boosting the global supply of vaccines. Biden told reporters Wednesday as he boarded Air Force One to Europe he would be announcing his global vaccine strategy. The White House declined to comment and Pfizer did not immediately respond to a request for comment.”