In a strongly worded statement, the organizations raised concerns about a “perfect storm” of setbacks including widespread misinformation, escalating humanitarian crises, rapid population growth, and recent funding cuts, all of which are jeopardizing routine immunization efforts and endangering millions of lives, particularly in vulnerable regions.
The resurgence of vaccine-preventable diseases such as measles, diphtheria, and yellow fever is being observed across low-income and conflict-affected areas, where immunization coverage has either stalled or declined. The health bodies attribute the spike in outbreaks to breakdowns in vaccine delivery systems and reduced public trust.
“Years of progress are at stake,” said Dr. Tedros Adhanom Ghebreyesus, WHO Director-General. “We must protect immunization gains and reach the millions of children, adolescents, and adults who remain unvaccinated.”
UNICEF Executive Director Catherine Russell spotlighted the impact of digital misinformation on public health outcomes. “When false information spreads faster than facts, communities suffer. We need collective action to restore confidence in vaccines,” she said, referencing a rise in online anti-vaccine narratives that have caused hesitancy even in communities previously committed to immunization.
Gavi CEO Dr. Sania Nishtar emphasized the importance of sustained investment and political will to ensure that vaccination programs continue to reach marginalized populations. “Without renewed commitment, recent gains could be reversed, leading to increased child mortality and unnecessary suffering,” she warned.
The three agencies are calling on governments, global donors, healthcare stakeholders, and civil society to intensify efforts and prioritize equitable access to life-saving vaccines. Their appeal comes at a time when routine immunization services are still recovering from the disruptions caused by the COVID-19 pandemic.
This year’s World Immunization Week is themed “Humanly Possible: Immunization for All,” underscoring the transformative power of vaccines in preventing disease, saving lives, and reinforcing primary healthcare systems globally.
The agencies are urging the international community to act decisively and collectively to protect future generations—because, as they insist, the world cannot afford to let immunization progress unravel.