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The WHO puts it plainly: delaying climate action undermines decades of public health progress.

In Mexico, for example, 80% of the population is at health risk from extreme weather, and a whopping 35% of diseases may be directly linked to environmental exposure.

Malaria, dengue, respiratory disease, malnutrition—all of it is getting worse as the planet warms. We can`t achieve global immunization goals on a destabilized planet. Climate action = health advocacy.

South Kordofan, Sudan hadn’t received vaccines in nearly three years. Not because the vaccines don’t exist, but because a siege blocked them. This month, 18 metric tons finally got through, and nearly 25,000 children will be given lifesaving vaccines this year. 
 
Vaccines only work if they can be administered. This delivery is a breakthrough; somewhere in Sudan this month, a child received a measles vaccine for the first time in nearly three years.

Cervical cancer is a vaccine access problem. In a major development, India is joining the 160 other countries that are taking action against it—free HPV vaccines for adolescent girls, nationwide. When political will meets public health evidence, lives are saved.

India`s nationwide HPV rollout is a win for 1.4 billion people, for the girls and women of our future generations, and for the global fight to eliminate cervical cancer as a whole.

Polio isn’t fully gone yet. Outbreaks still happen in under-vaccinated communities, and when they do, the world needs to respond fast. That means having enough of the right vaccines, ready to go, anywhere on the planet.
 
This latest prequalification helps make that possible by adding another novel oral polio vaccine type 2 (nOPV2) manufacturer to the global supply chain—that means more backup, less risk of shortages, faster protection for kids when it matters most.

In a powerful demonstration of global coordination and scientific agility, the World Health Organization has swiftly updated the 2026-2027 Northern Hemisphere seasonal influenza vaccine to match the rapidly spreading subclade K variant.
 
After just 4 days of consultation through the Global Influenza Surveillance and Response System, experts from around the world finalized the new composition—helping countries prepare with the best possible protection. Despite leaving WHO earlier this year, U.S. experts participated. 
 
When viruses evolve quickly, rapid, evidence-based updates like this are essential—and global cooperation delivered again.

Good news alert! 🚨 Next-generation flu vaccines could prevent 18 billion cases and save 6.2 million lives by 2050 while also mitigating AMR.
 
Current flu vaccines work—but protection only lasts one season, and effectiveness varies. Next-gen vaccines aim to offer broader, longer-lasting protection across multiple strains, reaching high-risk groups more effectively.
 
46 next-generation vaccine candidates are already in clinical development. Science doesn’t stop. 💪

Did you know fewer than 20 viral particles can be enough to spread norovirus? 
 
At the 2026 Winter Olympics, that translated to postponed games, team quarantines, and athletes missing the opening ceremony. Mass gatherings are a powerful reminder of how quickly illness can travel across a village, a venue, or a border.
 
Protecting people everywhere starts with strong public health systems and universal access to vaccines. 
 
Want more on public health at the Olympics? Check out a blog from Olympics Games of the past. #linkinstory⬆️

In 2024, 120 million people were displaced—leaving millions of children without lifesaving immunizations.
 
A new WHO report has confirmed what we already know: immunization coverage collapses in crisis settings. When families flee, routine immunization is one of the first things lost, putting children at risk of preventable diseases in the most vulnerable moments of their lives.
 
Our #HealthyStart for Refugee Children initiative is working to change that. Get involved today at shotatlife.org/healthystart