Denominator	Patients aged 50 and older and seen in 12 months.
Numerator	Received an influenza immunization OR who reported previous receipt of an influenza immunization between August 1, 2018 to March 31, 2019.(MSSP 2019)
Exclusion/Exception	• Documentation of medical reason(s) for not receiving influenza immunization (eg, patient allergy, other medical reasons). • Documentation of patient reason(s) for not receiving influenza immunization (eg, patient declined, other patient reasons). • Documentation of system reason(s) for not receiving influenza immunization (eg, vaccine not available, other system reasons).