Gavi, the Vaccine Alliance

Nigeria has the world’s highest number of unvaccinated children, with ~2.1 million zero-dose children in 2024. Read @EkpaliS’s dispatch on the displaced mothers doing whatever it takes to ensure their children do not fall into this category: bit.ly/4bPhLx7

Until a new clinic was opened in February 2026, the nearest clinic was an hour’s walk away and public transport fares are expensive. The journey is challenging but one mother said it was a “necessary sacrifice”:

In 2022, the only health clinic in Nigeria’s Wassa IDP camp was closed, leaving over 7,000 displaced people without access to a nearby health facility. Determined mothers did not let this obstacle stand in the way of getting their children immunised.

Ancient bacteria discovered in a Transylvanian ice cave could be our secret weapon against modern superbugs. Frozen for 5,000 years, these microbes contain unique enzymes and compounds that might inspire the next generation of life-saving antibiotics. Here’s what we know so far: bit.ly/4d8EGor

The findings of this new study are both a warning and a starting point for action. Here’s what you need to know: bit.ly/4sUP9In

A new study found that extreme rainfall was responsible for ~60% of dengue cases, which is ~22,000 infections, during Peru’s 2023 dengue outbreak. The method they used to gauge this could be applied to other climate-driven disease outbreaks to help countries be better prepared to contain them.

For the first time scientists have been able to pinpoint the role climate change is playing in the spread of one of the world’s fastest-growing infectious diseases. 🧵⬇️

Mosquitoes can be both a nuisance and a lethal threat. But researchers are investigating whether giving them a modified virus could turn them into flying vaccines, helping reduce the spread of rabies and Nipah virus from bats to humans. The full story on our Vaccines Work platform: bit.ly/3Nvk2nI

mRNA vaccines could revolutionise the fight against many deadly cancers, but experts say “false narratives could undermine public confidence” in this vital technology: bit.ly/4uHqWXY Via @ConversationUS

In this digital era, information moves faster than any virus. with few guardrails even if it’s false. Even when only a fraction of the population is misinformed, this can alter the trajectory of a disease outbreak. Here’s how misinformation can fuel outbreaks, and what we can do about it: bit.ly/3NriL1c

A strong immunisation system depends on more than delivery, it depends on confidence in every dose. In Ethiopia, health workers are using data to detect fridge failures early, move vaccines to backup storage and trigger targeted repairs. Here's how this shift is strengthening supply chains: bit.ly/4bQcjdi via @JSIhealth

In India, cervical cancer claims a life approximately every seven minutes – the highest death toll for the disease worldwide. A new nationwide, year-long roll-out of the HPV vaccine aims to protect a cohort of 11.5 million girls from suffering that same fate with a single, life-saving dose. Read more about the initiative that’s projected to have a global-scale impact on the burden of disease. bit.ly/3PDtuWQ

In rural Uganda a lack of reliable power means mothers are often forced to give birth in the dark. Now a new solarisation project is bringing light and reliable electricity to health centres across the country. The full story: bit.ly/4sNyHd5

“The introduction of [the Men5CV vaccine] in Niger and Nigeria confirmed a robust safety profile in real-world outbreak settings, with very low rates of serious adverse events and no new safety signals detected,” concluded the study’s research team. The latest on this exciting development: bit.ly/4rBBu89

Now a new study of nearly 5 million people protected with this new vaccine has confirmed what clinical trials had indicated: this vaccine is safe in real-world outbreak settings.

Meningitis is a bacterial infection that can kill within hours and can lead to brain damage, hearing loss and limb amputations. After ravaging sub-Saharan Africa with epidemics, we now have a vaccine that protects against the five serogroups responsible for almost all epidemic meningitis in the region.

Ancient bacteria discovered in a Transylvanian ice cave could be our secret weapon against modern superbugs. Frozen for 5,000 years, these microbes contain unique enzymes and compounds that might inspire the next generation of life-saving antibiotics. Here’s what we know so far: bit.ly/4d8EGor

Two people have recently died in a bacterial meningitis outbreak in the south of England. Here’s what you need to know. bit.ly/4uy9nte via @ConversationUK

Reaching zero-dose children is often framed as a geographic challenge. But new evidence shows that household dynamics and gender norms can be just as decisive as physical access to services. Here's how social factors are quietly reshaping immunisation strategies: bit.ly/4lBsYop via @JSIhealth

A small shot for a big future. 💉✨ In the crowded camps of Cox’s Bazar, every vaccine is a shield for a Rohingya child. Through the EPI program, we are protecting the most vulnerable from preventable diseases. Thanks to @gavi for helping us turn vaccines into hope.