preferred_name: Patient did not receive two doses of the herpes zoster recombinant vaccine (at least 28 days apart) anytime on or after the patient's 50th birthday before or during the measurement period
preferred_name_lc: patient did not receive two doses of the herpes zoster recombinant vaccine (at least 28 days apart) anytime on or after the patient's 50th birthday before or during the measurement period
label: No 2 hzv on/aft age 50
label_lc: no 2 hzv on/aft age 50