2019 Flu Vaccination: Uniform Data System (Table 6A, Line 24a – Seasonal Flu Vaccine). See: http://bphcdata.net/docs/uds_rep_instr.pdf.
2020 Flu Vaccination: Voluntary, weekly, health center responses to surveys administered by the Bureau of Primary Health Care. See: https://bphc.hrsa.gov/emergency-response/covid-19-survey-tools-questions.
2020 data were reported cumulatively through 10/23 and weekly in subsequent weeks; totals shown consist of the 10/23 cumulative data in addition to each subsequent week’s data.
Race/ ethnicity breakdowns are not available in the 2019 data.
Race/ ethnicity breakdowns were not available in the 2020 data until November 13; therefore, race/ethnicity totals do not equal total vaccinations.
Calculations compare 2020/2021 total vaccinations compares to 2019 total vaccinations. For both states and health centers, the formula for these calculations is 2020 Flu Vaccinations/ 2019 Flu Vaccinations.