The total number of doses administered in the United States differs between the Johns Hopkins Global Map and the for several reasons. The lack of a standardized method for data collection and reporting among state and federal government agencies has resulted in an assortment of approaches. Some states report vaccinations that federal agencies administer to the employees working in those states, but other states do not. And CDC data does not identify the states in which doses have been administered at the local branches of federal entities such as the Veterans Administration, the Bureau of Prisons, the Department of Defense, and the Bureau of Indian Affairs. Therefore, a complete set of that data is not publicly available yet. This prevents validation of state-reported data feeding into the Global Map against the CDC’s data.
Thus, the discrepancy in the total national numbers of vaccine doses administered between the CDC website and the Johns Hopkins Global Map. In addition, adding up vaccination totals for each individual state on the Johns Hopkins Coronavirus Resource Center will also not equal the CDC total.Ideally, we would be able to display vaccination data that matches with the CDC to provide more precise estimates of what percentage of state populations have been vaccinated. For example, veterans make up 10.3% of Virginia’s population. If all those vaccinations are reported through the VA but not recorded in state data then accurate analyses of, say, herd immunity are not possible.