Principal vaccine measures.

Table 1: Principal vaccine measures.

Vaccine Type	Measure	Description
Influenza	Influenza Vaccination	Percentage of patients aged 18 years or older seen during a visit between October 1 and March 31 who received an influenza vaccination OR who reported previous receipt of an influenza vaccination.
Pneumococcal	Pneumococcal Vaccination for Older Adults	Percentage of older adults ≥ 65 years old with a record of receiving BOTH one PCV13 AND at least one PPSV23 vaccine.
	High Risk Pneumococcal Vaccination	The percentage of patients aged 19 through 64 years old with a high-risk condition, who are up-to-date with recommended pneumococcal vaccination(s) - either PPSV23 alone (e.g., if immunocompetent with chronic disease) or both PCV13 and PPSV23 (e.g., if immunocompromised).
Herpes Zoster	Zoster Vaccination	Percentage of patients aged 60 or older who received a herpes zoster vaccination OR who reported previous receipt of a herpes zoster vaccination.
Tetanus, diphtheria, acellular pertussis	Tdap Vaccination	Percentage of patients aged 19 or older who received a primary vaccine series of tetanus/diphtheria/acellular pertussis (Tdap) vaccine OR who reported previous receipt of Tdap vaccination.