the New York Times that using the same spacing gap for both Pfizer and Moderna was "the easiest way to stand up the process based on our capabilities at the time."After some customers began expressing concern over the 28-day window, the U.S.
Centers for Disease Control and Prevention said in a statement that it was aware of Walgreens’ default four-week interval and said it "has asked the pharmacy partner to address the issue."Advertisement"For individuals who received the Pfizer COVID-19 vaccine, CDC continues to recommend getting the second shot 3 weeks (or 21 days) after the first shot, and to stick as close as possible to that recommended 3-week interval," the agency added in a statement.FILE - A pharmacist prepares a Pfizer COVID-19.