EXPLAINER: How much COVID-19 vaccine will be shipped in US

NEW YORK (AP) — COVID-19 vaccines will be shipping in the U.S. after getting emergency authorization, but supplies will be limited for some time. Officials say around 3 million shots will be shipped initially, with allocations based on a state’s population of people 18 and older. The government is holding back enough to ensure people can get a necessary second dose. For now, only Pfizer’s vaccine is being shipped, but other vaccines are making their way through the review proce