Illinois COVID-19 Vaccine Tracker

About the data

Vaccine development data: The vaccines included above are ones that are available or will likely become available to people in the U.S. These vaccines either have research funded by Operation Warp Speed or have sought authorization from the FDA. Information about vaccines is gathered from government agencies, news reports and the companies that produce the vaccines. Information on how vaccines work comes from the Centers for Disease Control and Prevention and Pfizer.

Vaccine administration data: Data regarding the number of vaccines administered and distributed comes from the CDC. U.S. totals include vaccination numbers from states, territories, federal agencies, Micronesia, Palau and the Marshall Islands. CDC data includes vaccinations distributed to island nations and territories since Dec. 13. All other CDC information covers doses given or distributed since Dec. 14. State totals, however, do not include vaccinations shipped to or administered by federal agencies in those states.

Population data: State and U.S. population numbers are based on data provided by the CDC. County-level population estimates use 2019 5-year estimates from the American Community Survey. On Jan. 22, we began using the total estimated population instead of the estimated population of people 16 and older.