U.S. COVID-19 vaccine rollout analysis hampered by technology, state data reporting - Reuters

When a dose of a COVID-19 vaccine leaves a U.S. manufacturing plant, its path can be traced all the way to the hospital or clinic representative signing for the shipment at its destination. What happens next is not always clear. https://www.reuters.com/article/us-health-coronavirus-vaccines-data-idUSKBN2BO5UR