Effectiveness of patient reminders on influenza vaccination coverage among adults with chronic conditions: A feasibility study in Australian general practices.

BACKGROUND: Influenza vaccination is recommended for Australians 18+ years old with medical risk factors, but coverage is suboptimal. We aimed to examine whether automatic, opportunistic patient reminders (SMS and/or printed) before appointments with a general practitioner increased influenza vaccination uptake. METHODS: This clustered non-randomised feasibility study in Australian general practice included patients aged 18-64 years with at least one medical risk factor attending participating practices between May and September 2021. Software installed at intervention practices identified unvaccinated eligible patients when they booked an appointment, sent vaccination reminders (SMS on booking and 1 h before appointments), and printed automatic reminders on arrival. Control practices provided usual care. Clustered analyses adjusted for sociodemographic differences among practices were performed using logistic regression. RESULTS: A total of 12,786 at-risk adults attended 16 intervention practices (received reminders = 4066; 'internal control' receiving usual care = 8720), and 5082 individuals attended eight control practices. Baseline influenza vaccination uptake (2020) was similar in intervention and control practices (∼34%). After the intervention, uptake was similar in all groups (control practices = 29.3%; internal control = 30.0%; intervention = 31.6% (p-value = 0.203). However, SMS 1 h before appointments increased vaccination coverage (39.3%, adjusted OR = 1.65; 95%CI 1.20;2.27; number necessary to treat = 13), especially when combined with other reminder forms. That effect was more evident among adults with chronic respiratory, rheumatologic, or inflammatory bowel disease. CONCLUSION: These findings indicate that automated SMS reminders delivered at proximate times to appointments are a low-cost strategy to increase influenza vaccination among adults at higher risk of severe disease attending Australian general practices.

Impact of funding influenza vaccination on coverage among Australian children: a national study using MedicineInsight, a large general practice database.

Influenza contributes to morbidity and mortality worldwide. Children are at a higher risk of influenza-related complications and vaccination promotes direct protection and limits transmission. This study aimed to explore influenza vaccination coverage among children in Australian general practice from 2015 to 2018, and patterns in coverage before and after the implementation of state-funded immunization programs. Data from 196,520 'active' patients (3+ consultations in two consecutive years) aged <5 years from 542 Australian general practices were included (MedicineInsight database). Logistic regression models were used to identify associations between vaccination with patient and practice characteristics. The overall vaccination coverage increased more than five times from 2015 (3.9%) to 2018 (19.6%) and varied among states. Children attending practices located in the wealthiest areas were more likely to receive the vaccine and appeared to benefit most from the funding, as the increase in coverage from 2017 to 2018 was greater among them than those attending practices in the least advantaged areas (17 vs. 11 percentage points, respectively). This relationship was not evident when analyzing the patient's socioeconomic level. In conclusion, free influenza vaccinations increase coverage in at-risk populations. Promotional campaigns may be required to maintain higher coverage and target practices located in low-income areas.

Pneumococcal vaccination uptake among patients aged 65 years or over in Australian general practice.

In Australia, pneumococcal vaccine is provided free to all adults aged ≥65 years and Indigenous people aged 15-65 years, and is subsidized for non-Indigenous adults <65 years of age with risk factors. This study aimed to explore pneumococcal vaccination uptake in older patients attending 550 Australian general practices from 2010-2017 by patient sociodemographics, presence of comorbidities and practice characteristics. Study 1: a cross-sectional analysis of 'active' patients aged ≥65 years in each year was performed to calculate annual pneumococcal vaccination uptake. Study 2: a cohort of 58,589 'every year' patients aged 60-65 years in 2010 was analyzed to identify the number of patients immunized during the study period. Logistic regression models assessed associations between vaccination, patient and practice characteristics. Annual pneumococcal vaccine uptake varied by patient's age (65-74 or ≥75 years), presence of comorbidities and regularity of practice visits (range 36% to 76%), and it declined slowly from 2011-2016 amongst all groups. Cohort analyses showed that 69% of those aged 60-65 years in 2010 had a recorded pneumococcal vaccination by 2017 (peak age of vaccination = 66 years), and vaccination was more likely among those with comorbidities, ex-smokers and frequent attenders to practices. Findings demonstrate that the NPS MedicineInsight database provides estimates of vaccination uptake consistent with past surveys, reproducible every year and at low cost. It has the advantage of additional clinical information compared to the Australian Immunization Register. Whilst vaccination uptake was adequate among 'every year' patients, interventions are needed to improve pneumococcal vaccination for all older Australians.

Influenza immunisation coverage from 2015 to 2017: A national study of adult patients from Australian general practice.

OBJECTIVES: To assess influenza immunisation rates and coverage in adult patients from Australian general practice and identify whether practice or patients' characteristics are associated with vaccination uptake. DESIGN: Open cohort study. SETTING: 550 Australian general practices included in the MedicineInsight database. PARTICIPANTS: Patients aged 18+ years who had at least one consultation during influenza season between 2015 and 2017. Two samples were considered: (1) 'active' patients (at least three consultations in any two consecutive years) and (2) 'every year' patients (at least one consultation per year). MAIN OUTCOME MEASURES: Influenza vaccination rates per 1,000 consultations and coverage (% vaccinated among those who consulted) from 2015 to 2017. RESULTS: Between 2015 and 2017 the influenza vaccine rate changed from 57.4 to 51.7 and 67.0 per 1,000 consultations, while correspondent values for coverage were 29.3%, 25.2% and 27.6% (in 'active' patients). Vaccine coverage was at least 30% higher in inner regional areas, among patients aged 65+ years or those with comorbidities. Similar associations were found among 'every year' patients, but average coverage across the three years was higher (41% vs 27%). Aboriginal and Torres Strait Islander people, either with or without comorbidity, showed a vaccine coverage 10-30% higher than non-Indigenous people for those aged less than 65 years (p-value for interaction < 0.001). CONCLUSION: MedicineInsight data is a useful and low-cost method to monitor influenza immunisation coverage. Independent of the sample used, vaccination coverage among Indigenous people or patients with comorbidities could be improved. Targeted strategies for high-risk groups need to be developed.