Economic evaluation of a metropolitan-wide, school-based hepatitis B vaccination program

The Attitudes of Healthcare Professionals in an Autonomous Community in Spain towards Paediatric Influenza Vaccination

In the 2022-2023 influenza season, three autonomous communities anticipated the document approved by the Public Health Commission recommending influenza vaccination for all children aged 6 to 59 months. The primary objective of this study was to evaluate the attitude of healthcare professionals towards the first universal vaccination campaign in our region, as well as the acceptability of the vaccines used and their attitude towards pilot school vaccination. This was a cross-sectional, survey-based, descriptive study. All healthcare professionals involved in the campaign were invited to participate. Overall, 91.9% of surveyed professionals thought that influenza vaccination from 6 to 59 months was important or very important, and 89.8% had previous experience regarding the intramuscular vaccine. Healthcare professionals rated the intranasal vaccine significantly more positively, but there were no differences when asking about each vaccine without comparison. The inhaled vaccine was preferred by 97.5% for the following campaign. Pilot school vaccination had a 75% acceptance rate. The inhaled vaccine was preferred by most professionals, and pilot school vaccination was highly accepted and independently associated with the importance of vaccination as considered by physicians, being a medical doctor, and participation in the pilot programme.

Increasing Coverage of Appropriate Vaccinations: A Community Guide Systematic Economic Review

CONTEXT

Population-level coverage for immunization against many vaccine-preventable diseases remains below optimal rates in the U.S. The Community Preventive Services Task Force recently recommended several interventions to increase vaccination coverage based on systematic reviews of the evaluation literature. The present study provides the economic results from those reviews.

EVIDENCE ACQUISITION

A systematic review was conducted (search period, January 1980 through February 2012) to identify economic evaluations of 12 interventions recommended by the Task Force. Evidence was drawn from included studies; estimates were constructed for the population reach of each strategy, cost of implementation, and cost per additional vaccinated person because of the intervention. Analyses were conducted in 2014.

EVIDENCE SYNTHESIS

Reminder systems, whether for clients or providers, were among the lowest-cost strategies to implement and the most cost effective in terms of additional people vaccinated. Strategies involving home visits and combination strategies in community settings were both costly and less cost effective. Strategies based in settings such as schools and MCOs that reached the target population achieved additional vaccinations in the middle range of cost effectiveness.

CONCLUSIONS

The interventions recommended by the Task Force differed in reach, cost, and cost effectiveness. This systematic review presents the economic information for 12 effective strategies to increase vaccination coverage that can guide implementers in their choice of interventions to fit their local needs, available resources, and budget.

Systematic review of the effect of immunization mandates on uptake of routine childhood immunizations

PURPOSE

The efficacy of immunization mandates for childcare or school entry is a long-standing controversy. The United States (US) adopted school entry immunization mandates in the 1800s, while most countries still do not have mandates. The objective of this systematic review was to analyze the evidence that immunization uptake increases with mandates.

METHODS

A search was conducted for studies that compared immunization uptake in a population prior to and after mandates, or in similar populations with one group having and the other not having mandates. Data were extracted and synthesized qualitatively due to the heterogeneity of study design.

RESULTS

Eleven before-and-after studies and ten studies comparing uptake in similar populations with and without mandates were included. Studies were from the US (n = 18), France (n = 1) and Canada (n = 2). Eleven of the 21 studies looked at middle school mandates. All but two studies showed at least a trend towards increased uptake with mandates. Higher uptake was associated with a more long-standing mandate.

CONCLUSIONS

Immunization mandates have generally led to increased short-term and long-term uptake in the group to whom the mandate applies. Many studies have centered around middle school mandates in the US and there is a paucity of studies of childcare mandates or of studies of mandates in other countries or in settings with relatively high baseline immunization uptake.

School-located influenza immunization programs: factors important to parents and students

PURPOSE

To describe both parent and student perspectives on the importance of various programmatic factors when deciding to participate in a school-located immunizations program (SLIP) for influenza vaccine.

METHODS

Questionnaires were distributed to middle- and high-school students and their parents; the document assessed demographic data, influenza vaccination history, and the importance of various factors in their decision to participate in a potential SLIP for influenza vaccine. Factor analysis created six primary factors of importance related to programming: (1) safety/trust; (2) outbreaks (representing imminent threat of disease, an environmental factor associated with program timing); (3) issues of site implementation; (4) public health benefits; (5) record-keeping; (6) medical/emotional support.

RESULTS

Participants included 621 students and 579 parents; 566 student/parent dyads were included. Most respondents were female, felt it is important to be immunized against the flu, and received the influenza vaccine in the past. Fewer than 50% had received the intranasal vaccine. More parents (67%) than students (46%) expressed a general willingness to consent to utilizing a SLIP. The programmatic factors associated with public health were second only to safety/trust factors as the most important to parents and students when considering participation in a SLIP. Demographic variables were found to be associated with the importance ratings of program factors associated with participation in a SLIP.

CONCLUSIONS

When considering possible participation in SLIPs, parents and students consider programmatic factors associated with safety/trust and public health benefits to be of the greatest importance. Further study will be needed to develop effective and culturally sensitive messaging that targets and emphasizes these factors to potentially increase participation in SLIPS.

Rural parents' vaccination-related attitudes and intention to vaccinate middle and high school children against influenza following educational influenza vaccination intervention

OBJECTIVE

This study examined changes in parental influenza vaccination attitudes and intentions after participating in school-based educational influenza vaccination intervention.

METHODS

Participants were drawn from three counties participating in a school-based influenza vaccination intervention in rural Georgia (baseline N=324; follow-up N=327). Data were collected pre- and post-intervention from phone surveys with parents' with children attending middle- and high-school. Attitudes, beliefs, vaccination history, and intention to vaccinate were assessed.

RESULTS

Parents who participated in the intervention conditions reported significantly higher influenza vaccination rates in their adolescents, relative to a control group, as well as increased vaccination rates post-intervention participation relative to their baseline rates. Intervention participants reported greater intention to have their adolescent vaccinated in the coming year compared to control parents. Significant differences were observed post intervention in perceived barriers and benefits of vaccination.

CONCLUSIONS

These findings suggest that a school-delivered educational influenza vaccination intervention targeting parents and teens may influence influenza vaccination in rural communities. Future influenza vaccination efforts geared toward the parents of rural middle- and high-school students may benefit from addressing barriers and benefits of influenza vaccination.

Multicomponent interventions to enhance influenza vaccine delivery to adolescents

OBJECTIVE

To compare school- versus provider-based approaches to improving influenza vaccination coverage among adolescents in rural Georgia.

METHODS

We used a nonrandomized, 3-armed design: (1) a middle- and high school-based influenza vaccination intervention in 1 county; (2) a provider-based influenza vaccination intervention in a second county; and (3) a standard-of-care condition in a third county. Interventions also included distribution of an educational brochure, school presentations, and community-based outreach to enhance vaccine knowledge and awareness among adolescents and their parents.

RESULTS

During the 2008-2009 influenza season, 70 (19%) of 370 students were vaccinated in the school-based county and 110 (15%) of 736 students were vaccinated in the provider-based county, compared with 71 (8%) of 889 students in the standard-of-care county (risk ratio [RR](school): 2.4 [95% confidence interval (CI): 1.7-3.2]; RR(provider): 1.9 [95% CI: 1.4-2.5]). During 2009-2010, seasonal influenza vaccination coverage was 114 (30.4%) of 375 of students in the school-based county, 122 (16.9%) of 663 of students in the provider-based county, and 131 (15.2%) of 861 students in the standard-of-care county (RR(school): 2.3 [95% CI: 1.9-2.9]; RR(provider): 1.2 [95% CI: 0.97-1.5]).

CONCLUSIONS

Special efforts to promote influenza vaccination among rural, predominantly black students were associated with increased vaccination coverage. The school-based influenza vaccination intervention was associated with the highest levels of vaccination coverage. This study revealed the efficacy of school-based influenza education to improve vaccination rates among adolescents.

Coordinating the delivery of vaccinations and other preventive health care recommendations for adolescents

Although recommendations for annual preventive care for adolescents have been in place for decades, the need to bring adolescents to the medical setting for newly recommended vaccines has placed this issue in the public health spotlight. Aggressive efforts have been ongoing to increase adolescent adherence to new vaccine recommendations--a measured outcome variable, and the hope has been that enhanced adherence to comprehensive health care visits will follow. Evidence indicates that the implementation of more comprehensive preventive health care elements among adolescents may be improving; however, a passive approach to bringing more adolescents to preventive health visits using vaccine as an incentive may not be effective for all youth. This paper reviews the history of recommendations for new vaccines as well as comprehensive health care visit recommendations for adolescents, how these recommendations may synergistically improve preventive care for adolescents, and how we may need to continue to think creatively to further access all youth for preventive health care using vaccination implementation as a model for reaching out beyond the providers' office walls.

Strategies for implementing school-located influenza vaccination of children: a systematic literature review

BACKGROUND

The Advisory Committee on Immunization Practices (ACIP) recommends influenza vaccinations for all children 6 months to 18 years of age, which includes school-aged children. Influenza immunization programs may benefit schools by reducing absenteeism.

METHODS

A systematic literature review of PubMed, PsychLit, and Dissertation Abstracts available as of January 7, 2008, was conducted for school-located vaccinations, using search words "School Health Services" and "Immunization Programs"; limited to "Child" (6-12 years) and "Adolescent" (13-18 years) for PubMed and "mass or universal" and (immuniz(*) or immunis(*) or vaccin(*)) and (school or Child or Adolescen(*)) for PsychLit and Dissertation Abstracts. Fifty-nine studies met the criteria for review.

RESULTS

Strategies such as incentives, education, the design of the consent form, and follow-up can increase parental consent and number of returned forms. Minimizing out-of-pocket cost, offering both the intramuscular (shot) and intranasal (nasal spray) vaccination, and using reminders can increase vaccination coverage among those whose parents consented. Finally, organization, communication, and planning can minimize the logistical challenges.

CONCLUSIONS

Schools-based vaccination programs are a promising option for achieving the expanded ACIP recommendation; school-located vaccination programs are feasible and effective. Adhering to lessons from the peer-reviewed scientific literature may help public health officials and schools implement the expanded recommendation to provide the greatest benefit for the lowest cost. Given the potential benefits of the expanded recommendation, both directly to the vaccinated children and indirectly to the community, prospective, well-controlled trials to establish the cost-effectiveness of specific vaccination strategies should be high priorities for future research.

Trends in vaccine-induced immunity to hepatitis B among Canadian street-involved youth

In Canada, universal and publicly funded hepatitis B immunization programs have been available since 1998 in all provinces and territories. This present study estimates the proportion of having vaccine-induced immunity to hepatitis B virus (HBV) infection and its associated determinants among street-involved youth aged at 15-24 years old in Canada using the data collected by the Enhanced Surveillance of Canadian Street Youth. Vaccine-induced immunity was identified by blood test results of anti-HBc negative and anti-HBs positive. Of the 4,035 participants included in this study, the overall proportion of those with vaccine-induced immunity to HBV was 51.7% during the study period compared to over 90% among the general adolescent population. The proportion of street-involved youth immunized with HBV vaccine increased from 34.7% in 1999 to 64.4% in 2005. Immunity was higher among females (aOR = 1.43, 1.17-1.75) and among those with a reported history of sexually transmitted infection (aOR = 1.30, 1.03-1.63). The proportion of youth with the immunity decreased as age increased (aOR = 0.78, 0.76-0.81, per year increase). Despite an overall increase in the proportion of Canadian street-involved youth with vaccine-induced immunity to HBV, the proportion was still significantly lower than that observed in the general adolescent population. This highlights the need to improve the access to basic health care and the immunization programs to HBV for street-involved youth through creative outreach programs and other multi-faceted approaches.

Uptake of meningococcal conjugate vaccine among adolescents in large managed care organizations, United States, 2005: demand, supply and seasonality

Background

In February 2005, the US Advisory Committee on Immunization Practices recommended the new meningococcal conjugate vaccine (MCV4) for routine use among 11- to 12-year-olds (at the preadolescent health-care visit), 14- to 15-year-olds (before high-school entry), and groups at increased risk. Vaccine distribution started in March; however, in July, the manufacturer reported inability to meet demand and widespread MCV4 shortages were reported. Our objectives were to determine early uptake patterns among target (11-12 and 14-15 year olds) and non-target (13- plus 16-year-olds) age groups. A post hoc analysis was conducted to compare seasonal uptake patterns of MCV4 with polysaccharide meningococcal (MPSV4) and tetanus diphtheria (Td) vaccines.

Methods

We analyzed data for adolescents 11-16 years from five managed care organizations participating in the Vaccine Safety Datalink (VSD). For MCV4, we estimated monthly and cumulative coverage during 2005 and calculated risk ratios. For MPSV4 and Td, we combined 2003 and 2004 data and compared their seasonal uptake patterns with MCV4.

Results

Coverage for MCV4 during 2005 among the 623,889 11-16 years olds was 10%. Coverage for 11-12 and 14-15 year olds was 12% and 11%, respectively, compared with 8% for 13- plus 16-year-olds (p < 0.001). Of the 64,272 MCV4 doses administered from March-December 2005, 73% were administered June-August. Fifty-nine percent of all MPSV4 doses and 38% of all Td doses were administered during June-August.

Conclusion

A surge in vaccine uptake between June and August was observed among adolescents for MCV4, MPSV4 and Td vaccines. The increase in summer-time vaccinations and vaccination of non-targeted adolescents coupled with supply limitations likely contributed to the reported shortages of MCV4 in 2005.

Adolescent immunizations: policies to provide a shot in the arm for adolescents

With multiple vaccines for adolescents recently recommended and in various stages of development, the issue of how to effectively deliver immunizations to this age group has become increasingly important. This manuscript addresses some of the primary barriers and potential public health solutions to providing vaccinations effectively to adolescents. The foreseen complexities associated with each potential solution will be noted throughout; there remain potentially unforeseen ramifications as well.

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Hepatitis B vaccination rate of homeless children in Baltimore

OBJECTIVE

To investigate the hepatitis B vaccination rate in homeless children 2 to 18 years old living in Baltimore City.

METHODS

During a 21-month period, 250 children from homeless shelters were enrolled.

RESULTS

The percent of children who had received 3 or more doses of hepatitis B vaccine was inversely related to age; 90% in 2- to 5-year-olds and 29% in 13- to 18-year-olds (P<0.0001). Seventy percent of 2- to 5-year-olds had at least some of their vaccine history recorded in the Baltimore Immunization Registry Program but the history was complete in only half. Forty-two percent of 13- to 18-year-olds had no hepatitis B vaccine doses recorded in any source; 49 per cent of 10- to 18-year-olds were either not immunized or had received only one hepatitis B vaccine dose.

CONCLUSIONS

Hepatitis B vaccine coverage is high in homeless children up to 9 years of age, whereas the majority of homeless children 10 years of age and older are unprotected against hepatitis B virus infection. Tracking the vaccine records in homeless children is labor intensive. Better public health strategies to deliver hepatitis B vaccine to older homeless children are urgently needed.

A statewide hepatitis B vaccination program for school children in Hawaii: vaccination series completion and participation rates over consecutive school years

OBJECTIVE

The authors assessed a statewide school-based Hepatitis B (HepB) vaccination program for preadolescents in Hawaii over three consecutive school years. Factors assessed included number of schools and students participating and number of students receiving three doses of hepatitis B vaccine.

METHODS

Records of the program, which targeted 4th and/or 5th graders in public and private schools, were reviewed for the period from 1996 to 1999.

RESULTS

The proportion of participating schools increased from 76% of all schools in the state in School Year 1 to 94% in School Year 3. The proportion of children with completed consent forms who received three doses of HepB vaccine at school exceeded 80% throughout the project. In School Year 1, 10,003 (70%) of 14,333 children enrolled at participating schools received three vaccine doses in school; however, this proportion declined over subsequent school years to 51% (7,722/15,013) in School Year 2 and 24% (7,344/30,429) in School Year 3. A survey of 477 parents not consenting to school vaccination indicated that 84% of their children completed the vaccine series at a private provider office.

CONCLUSION

Statewide school-based HepB vaccination campaigns for at-risk populations can result in a majority of children in targeted age groups receiving three doses of hepatitis B vaccine, though declining participation may be observed as uptake in the private sector increases.

Effectiveness and cost comparison of two strategies for hepatitis B vaccination of schoolchildren

CONTEXT

In 1994, immunization against hepatitis B was implemented in schools in Quebec, targeting grade 4 students. In 1996-1997 and 1997-1998, one Local Community Service Centre (CLSC) replaced the school-based program in its district with vaccination offered in community clinics after school hours. The aim of the current study was to compare the effectiveness and costs of school-based and clinic-based programs.

METHODS

Vaccination coverage data were collected in the CLSC with the clinic-based program (CBP), and in three matched CLSCs with a school-based program (SBP), from 1994 to 2000. Surveys were conducted to estimate costs to parents, to schools and to CLSCs in 1997-1998.

RESULTS

With the implementation of the CBP, the vaccination coverage fell to 73%, compared with over 90% in the SBPs. Coverage increased to 90% when the CBP was abandoned. Costs to the CLSC were not much lower in the CBP. Societal costs were $63 per student vaccinated in the CBP, and < or = $40 in the SBPs.

CONCLUSION

Results demonstrate the advantage of a SBP over a CBP for the immunization of schoolchildren.