Boost Child Vaccine Rates in Communities

Community-Led Vaccine Effort Shows Early, Limited Success

A new study from England suggests that working directly with communities can increase early childhood vaccine rates, but the effects may be brief. The preprint, led by M. S. Amin and colleagues, examined the Health Equity Liverpool Project (HELP). This initiative ran from October 2023 to June 2024 in nine Liverpool neighbourhoods with long-standing low immunisation coverage.

The research team wanted to see if a community-engagement approach, co-developed with local groups, could make a difference. They focused on five routine vaccines, including the measles, mumps, and rubella (MMR) shot, the 6-in-1 vaccine, and the rotavirus vaccine. Using a synthetic control analysis, they compared 19 medical practices near HELP sites to a weighted model built from 5,826 other practices across England.

Short-Term Gains for Early Vaccines, Not for MMR

The results show a clear but limited pattern. After the HELP project started, uptake for two vaccines given to infants rose. The rotavirus vaccine coverage increased by 10.03%, which translated to about 120 more infants being vaccinated in the intervention area compared to the synthetic control. For the 6-in-1 vaccine—which protects against diphtheria, tetanus, pertussis, polio, haemophilus influenzae type b, and hepatitis B—uptake rose by 11.56%, or about 143 additional children.

“These findings indicate that the intervention had a positive effect on two of the five vaccines studied,” the authors write. However, the study found no statistically significant change for the first dose of MMR by age two or five, the second MMR dose, or the pneumococcal conjugate vaccine (PCV). This split result indicates the intervention worked better for vaccines administered in the first year of life than for those given later, like the MMR.

Improvements Faded After Nine Months

Perhaps the most significant finding was the lack of staying power. The increases in rotavirus and 6-in-1 vaccine uptake were temporary. According to the analysis, coverage returned to its previous, lower levels roughly nine months after the intervention began. The HELP initiative itself lasted about eight months, from October 2023 to June 2024.

This pattern suggests that while focused community efforts can create a temporary boost, they do not automatically lead to a permanent shift in vaccination behaviour. The data implies that once the intensive support and engagement activities stop, old patterns re-emerge.

What This Means for Community Health Programs

The authors, including senior author D. Hungerford, are clear about the implications. “Our findings suggest that such approaches are unlikely to have a sustained impact without long-term investment, integration into existing immunisation systems and addressing the wider social determinants of health,” they state in the conclusion.

In other words, one-off or short-term projects are not enough to solve persistent low vaccine coverage. The study points to a need for two key changes. First, community engagement must be built into standard healthcare systems, not treated as a separate project. Second, broader issues like poverty, access to services, and trust in institutions must be addressed alongside vaccine-specific campaigns.

The research has important limitations. As a preprint, it awaits formal peer review to check its methods and conclusions. The study design is quasi-experimental, meaning it cannot prove the HELP project directly caused the changes, only that they were associated. The synthetic control method, while powerful, relies on statistical modelling. Furthermore, the specific activities of the HELP project (like health worker training or community events) are not detailed in the abstract, making it hard to know which parts were most effective.

For parents and professionals, this study reinforces that building vaccine confidence is complex. Community partnerships can help, but they require consistent commitment and must be part of a larger, supportive health system to make a lasting difference.

Source:
Evaluating the impact of a community-engagement intervention on the uptake of childhood vaccines in England: A synthetic control analysis (medRxiv preprint, 2026-05-04)