Reconstructing childhood immunisation during conflict: a mixed-methods cohort evaluation in Myanmar
This mixed-methods cohort study in conflict-affected Myanmar demonstrates that a nurse-led, community-based immunisation programme successfully re-established access and achieved full immunisation in 50% of zero-dose children, highlighting the critical role of community engagement and sustained follow-up despite significant logistical and security challenges.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
Imagine a city where the main roads are blocked by a storm, the bridges are out, and the official delivery trucks have stopped running. In this city, many children are missing their "health passports"—the vaccines that protect them from dangerous diseases. This is the reality in parts of Myanmar during its ongoing conflict.
This paper tells the story of a group of local nurses who decided to build their own "backroads" to deliver these health passports, even while the storm raged. They didn't just guess how well they were doing; they kept a detailed logbook of 13,000 children to see if their plan worked.
Here is the story of their journey, broken down simply:
The Mission: Rebuilding the Bridge
When the government health system collapsed, many children became "zero-dose" kids—meaning they had received zero vaccines. The nurses, working through a group called the Karenni Nurses Association, set up a mobile clinic system. Instead of waiting for children to come to a hospital (which was often unsafe or closed), the nurses went to the villages and refugee camps.
They had to buy their own vaccines from a neighboring country (Thailand) and smuggle them across borders, often using elephants or walking through rivers when roads were flooded. It was like trying to deliver a birthday cake through a war zone: difficult, expensive, and risky.
The Experiment: Tracking the Children
The researchers treated this effort like a long-term race. They followed 13,263 children from 2023 to 2025.
- The Goal: To see if the "zero-dose" children could catch up and get all their required shots (Full Immunisation).
- The Challenge: In a normal world, you might expect a child to get all shots by age one. But here, because of the fighting and displacement, many children didn't show up until they were older, and the schedule was chaotic.
The Results: A Mixed Bag, But Hopeful
Out of the children who had been in the program long enough to be fully evaluated (about 2,684 "zero-dose" kids):
- At 1 year: Only 17% had finished all their shots.
- At 18 months: That number grew to 50%.
So, half of the children who started with nothing were able to get fully protected within a year and a half. While they didn't hit their original goal of 70% by the one-year mark, getting half the children protected in a war zone is a massive achievement.
What made the difference?
The study found three "magic keys" that helped children finish their shots:
- More Chances to Visit: The more often the nurses showed up at a specific spot, the more likely children were to get vaccinated. It's like a bus that runs frequently; people are more likely to catch it than a bus that comes once a month.
- Speeding Up the Schedule: Some sites used an "accelerated" schedule (getting shots closer together) rather than the standard long wait. This helped children catch up faster.
- Sticking With It: If a child came back for a second or third visit within the first year, they were almost guaranteed to finish the whole series. If they didn't come back early on, they usually dropped out for good.
The Cost: Paying a Premium for Danger
Because the nurses couldn't buy vaccines at the cheap, subsidized prices available to stable countries, they had to pay full commercial prices.
- The Price Tag: It cost $147 to fully vaccinate one child in this conflict zone.
- Comparison: In a stable country with international aid, that same child might cost only about $31.
- Why so high? Most of the extra money went to the vaccines themselves (because they were bought at full price) and the complex logistics of moving them through dangerous areas.
The Hurdles: Why It Wasn't Perfect
The paper explains that even with the nurses' best efforts, the "storm" kept causing problems:
- The Weather: During the rainy season, rivers became impassable, and the nurses had to cancel sessions.
- The Danger: Insecurity meant they sometimes couldn't reach certain villages.
- Running Out of Supplies: Sometimes the vaccines ran out, or a specific type (Japanese Encephalitis) was suddenly stopped by the UN due to funding issues, leaving some children unable to finish their full set of shots.
- Moving Targets: Families were constantly moving to escape fighting, making it hard to keep track of them.
The Bottom Line
This study shows that even when a country's official health system breaks down, local communities can step in to save lives. By using local nurses, building trust with village leaders, and being flexible with schedules, they managed to vaccinate half of the most vulnerable children.
However, the paper also warns that this is a fragile victory. It relies entirely on outside money and the bravery of local workers. Without peace and a rebuilt health system, these gains are at risk. But the study proves that the foundation for health can be laid even while the ground is still shaking.
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