Background
In 2011, 15.8% of eligible patients in the US were vaccinated against herpes zoster (HZ).
Purpose
To increase usage of the HZ vaccine by studying physiciansâ knowledge, attitudes, practices, and perceived obstacles after interventions to overcome barriers.
Methods
General internal medicine (GIM) physicians were surveyed with a cross-sectional internet survey October to December 2011 before interventions to increase use of the HZ vaccine and 1 year later. Interventions included education, increasing availability at the medical center pharmacy, and electronic medical record reminders. Outcome measures included changes in knowledge, attitudes, and practices, and perceived barriers. McNemar chi square tests were used to compare the changes from the baseline survey for physicians who completed the follow up survey.
Results
Response rate for the baseline study was 33.5% (89/266) and for the follow-up 29.8% (75/252). 55 completed both surveys. There was a decrease from 57% at baseline to 40% at follow-up in the proportion of physicians who reported less than 10% of their patients were vaccinated. They were more likely to know the HZ annual incidence (30% baseline; 70% follow-up; p=0.02), and report having educational information for physicians (7% baseline; 27% follow-up; p=0.003). The top helpful intervention was nursing administration of the vaccine. Average monthly HZ vaccine usage in the affiliated outpatient pharmacy increased in the 10 months between surveys by 156% compared with the 3 months prior to the baseline survey.
Conclusions
Interventions implemented during the study led to an increase in physiciansâ basic knowledge of the HZ vaccine and an increase in usage at the affiliated pharmacy.