As the Americas prepare for Vaccination Week in the Americas 2025, the Pan American Health Organization (PAHO) has issued an urgent call to strengthen immunization efforts across the region. This appeal comes amid growing concerns over declining vaccination coverage and the resurgence of preventable diseases, echoing similar warnings from health authorities in Europe where record numbers of measles and pertussis cases were reported in 2024.
According to PAHO, the initiative — which runs annually to promote equity and access to vaccines — will focus on reaching underserved populations and closing immunization gaps that have widened since the COVID-19 pandemic disrupted routine health services. The organization emphasized that vaccines remain one of the most effective tools to prevent outbreaks and protect vulnerable groups, including children, pregnant women, and the elderly.
Vaccination Week in the Americas 2025 will build on past campaigns that have delivered over 1 billion doses of vaccines since its inception in 2003. PAHO officials noted that while progress has been made in eliminating diseases like polio and rubella from the region, recent declines in coverage threaten to reverse these gains. The campaign aims to reinforce public trust in vaccines and counter misinformation that has contributed to hesitancy in some communities.
The call to action aligns with broader global efforts to improve immunization rates, particularly as the World Health Organization and UNICEF have highlighted setbacks in European regions where more than 298,000 cases of pertussis and 127,000 cases of measles were recorded in 2024. These figures, reported by the European Commission, WHO, and UNICEF at the launch of the twentieth European Immunization Week, underscore the risks of declining vaccine uptake even in areas with previously strong public health infrastructure.
In Belgium, where outbreaks have drawn significant attention, health authorities reported that the Flemish region alone recorded 2,790 pertussis cases in 2024 — more than double previous years and the highest number since records began. However, early data from 2025 show a significant decline, with only 307 cases reported in Flanders following targeted vaccination campaigns, including outreach to pregnant women to protect newborns through maternal immunization.
PAHO stressed that sustaining high vaccination coverage requires consistent investment in primary care, robust surveillance systems, and community engagement. The organization urged governments across the Americas to prioritize funding for immunization programs, train health workers, and ensure vaccine supply chains remain resilient, especially in remote and border areas.
This year’s Vaccination Week in the Americas will include activities such as school-based vaccination drives, mobile clinics in hard-to-reach areas, and public awareness campaigns using traditional and digital media. PAHO also encouraged countries to share best practices and strengthen regional cooperation to prevent cross-border transmission of infectious diseases.
As nations prepare to implement local initiatives under the regional framework, PAHO reiterated that vaccines are safe, rigorously tested, and essential for maintaining public health. The organization pointed to decades of evidence showing that immunization not only saves lives but also reduces healthcare costs and promotes social equity by protecting those most at risk.
Looking ahead, PAHO will monitor coverage rates and disease incidence throughout 2025 to assess the impact of Vaccination Week activities. The next official update on regional immunization progress is expected during the Pan American Sanitary Conference later this year, where member states will review achievements and set priorities for the coming years.
For the most current information on Vaccination Week in the Americas 2025, including country-specific activities and vaccination schedules, readers are encouraged to visit the official PAHO website or consult their national ministry of health.
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