How has the pandemic shifted parental views towards childhood vaccinations?

The pandemic has induced the largest falls in uptake of routine childhood vaccination in over a decade. IMMS investigates the underlying causes and identify actionable solutions.

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What major demand and practical barriers to vaccination caregivers faced in the last decade and how has this impacted health equity?

The IMMS team explore global vaccination barriers and facilitators via an umbrella review using the latest methodological methods and recent evidence.

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Explore the current global state of vaccination barriers globally: the latest insights from our global 2025 survey that interviewed over 40,000 caregivers globally

The IMMS team explore national levels in demand- and access-barriers to vaccination for 23 countries globally using the WHO/UNICEF Behavioral and Social Drivers Framework and identify gaps in demand and access across key equity groups.

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Transforming data insights into action for vaccine equity

IMMS integrates behavioural science, data science, and machine learning to develop targeted solutions that address childhood vaccine inequities and help save lives.

About IMMS

Falling vaccination rates have led to outbreaks of preventable diseases worldwide. Alongside challenges in accessing vaccines, growing vaccine hesitancy highlights the need to understand the social and behavioural factors that shape vaccination decision.

“This is a red alert for child health. We are witnessing the largest sustained drop in childhood vaccination in a generation”

World Health Organization

IMMS is a four-year initiative funded by the Gates Foundation to investigate the barriers and drivers of vaccination globally. Building on over a decade of Vaccine Confidence Project and LSHTM research, IMMS will provide new data, deep insights, and actionable guidance for policymakers and key stakeholders.