Recent research suggests that undernourished children may mount weaker immune responses to some vaccines, potentially leaving them more vulnerable to infection. Linda Geddes breaks down the latest research: bit.ly/48agfmB

The XFG COVID-19 variant has been circulating since at least January 2025 and now accounts for nearly half of sequenced samples worldwide. Here’s everything you need to know about the ‘American COVID’ variant: bit.ly/4eHSl5w

How do we reach and protect the millions of children around the world that have never received a single vaccine? It starts by putting vaccination blindspots on the map. Geospatial modelling, surveys and routine data collections are revealing pockets of inequity, but experts say they must be refined to ensure children don’t fall through the cracks: bit.ly/4z7o7kK Via The Conversation

In Pakistan, doctors are reporting a troubling rise in children affected with SSPE, a brain disease linked to measles infections that is almost universally fatal. What doctors are seeing, and how vaccination helps: bit.ly/4yZ8ZpG

We’ve reached a historic turning point in the fight against malaria. Malaria vaccines have now reached ✨24 African countries ✨ with Burundi, Ethiopia, Guinea, Mali, Togo, Uganda and Zambia introducing the life-saving rollout in 2025. Read more about this latest milestone against one of the world’s deadliest diseases: gavi.org/progress-report

Polio paralyzed @RAMESHFERRIS as a baby. The polio vaccine existed, but it was out of reach for his family in India. For more than 20 years, he has urged the world to finish the job so every child can grow up polio-free. Read his story this #worldpolioday: gatesnot.es/488iCpU #EndPolio @gatesfoundation

How did a polio strain circulating in Pakistan infect a girl in Malawi who had never left her home? This case from 2022 is a warning that as long as polio persists anywhere, it’s a threat everywhere: bit.ly/45HRVbm #EndPolio #worldpolioday

"If these health workers saved our children before, they will save them again." -- Hauwa'u, a mother in Sokoto. Trust is the most powerful tool in healthcare. Here's how the relationships built during polio campaigns are now unlocking vaccine confidence for all childhood diseases in Nigeria. bit.ly/3Rs5pDn #EndPolio #WorldPolioDay

Kids today may not remember polio, but their grandparents likely do. That’s why @Rotary‘s Dr. Arthur Lavin, founder of @GrandparentsFV, is collecting their stories. Grandparents’ memories teach younger generations what life was like before vaccines protected children from polio, and remind families why vaccines still matter today: bit.ly/3TSexD7 #EndPolio #WorldPolioDay

“For me, vaccination represents a promise of health and fulfillment to children.” Djeneba shares a moment of joy with her daughter, Aïssata, 8 months, who just got vaccinated against polio in Mali. Aïssata is one of the many children reached during a nationwide vaccination campaign to #EndPolio. After the virus was detected in 2023 – with new cases as recently as April 2026 – the government, health workers, parents, @UNICEF and partners are working together to protect the health of every child. #WorldPolioDay @EndPolioNow | @WHO | @Rotary | @gatesfoundation | @Gavi

“I missed a lot in life just because I missed two drops of a vaccine” - Harold Kipchumba was just three years old when he developed #polio which led to permanent paralysis. He is now championing the vaccine he wasn’t able to get: bit.ly/4e6cFe0 #WorldPolioDay #EndPolio

Beninese pop star Miss Espoir knows exactly what polio can do. She’s lived with its effects since childhood. Now a well-known musician in Benin, she uses her voice to remind parents that polio is still a real, but preventable, threat. Here’s how she’s using her own story of surviving polio to answer questions and build trust with families: bit.ly/4vAJQPN #EndPolio #WorldPolioDay