In Bangladesh, a nation once celebrated for its vaccination achievements, political upheaval fractured the quiet infrastructure of public health — and measles, a disease humanity knows how to prevent, has claimed the lives of more than a thousand children under five since March 2025. The outbreak, the world's worst this year, is a reminder that immunization is not merely a medical act but a social contract, one that depends on stable governance, trusted institutions, and the unglamorous work of reaching every last child. What Bangladesh is enduring is not an anomaly but a warning: the margin b
Bangladesh's Measles Crisis Exposes Global Vaccination Vulnerability
1,147 deaths from measles, with 94% occurring in children under five years old; families sold assets for treatment and children died unvaccinated due to lack of outreach.
They came only after I buried my son
Mark
So Bangladesh had vaccination rates above 90 percent just a year ago. What actually broke the system?
Mimi
Political upheaval in 2024 ended 15 years of one government's rule. During the transition, health workers struck, vaccine orders got delayed, and the whole routine program fell apart. Coverage dropped from 96 percent to 90 percent in a single year.
Luke
That's a real drop, but I want to be careful here—we're talking about first-dose coverage. The second dose, which catches kids who didn't develop immunity from the first shot, fell to 86 percent. Both matter.
Mark
And 95 percent is the magic number for herd immunity?
Mimi
Yes. Below that, the virus can spread through the gaps. Bangladesh had been just above it, so they were protected. Once they fell below it, measles found its opening.
Luke
Though we should note the WHO and UNICEF raised questions about the quality of the vaccination data itself for 2023 to 2025. Some official reports showed more doses given than people in the target population. So the actual coverage might have been even lower than reported.
Mark
That's unsettling. And then when the outbreak started, the emergency response missed millions of children?
Mimi
The government said it vaccinated every child in the target age group during the April and May campaign. But in June, another health program targeting the same age group had 4 million more children on its list. So they'd missed 4 million kids.
Luke
We should be precise: the gap emerged when comparing the two programs. It's possible some children were on one list but not the other for legitimate reasons, but the documents suggest a real coverage shortfall.
Mark
Why did they miss so many?
Mimi
They rushed. They did only one readiness check instead of four before launching. Those checks verify that districts have refrigeration, accurate child counts, trained staff. One round isn't enough to catch problems.
Luke
And by August, the data showed that unvaccinated children among confirmed measles cases hadn't changed much—82 percent before the campaign, 85 percent after. That's a concrete measure of how little the campaign moved the needle.
Mark
So families like Amin Mia's—they were waiting for health workers who never came?
Mimi
In Sylhet, 8 of 16 families Reuters interviewed said they hadn't seen health workers offering vaccinations. At least six said workers only showed up after a child in their community had died. By then it was too late.
Luke
That's anecdotal, but it's consistent with the data showing coverage gaps. The question is whether this was a resource problem, a planning problem, or both.
Mark
What happens now?
Mimi
The government launched another campaign at the end of September targeting 3.4 million children previously missed. Scientists are also studying why immunity is waning faster than expected in very young babies. And the hospital system is overwhelmed—Sylhet's main measles hospital had 178 patients admitted on the day Reuters visited.
Luke
So the outbreak is still accelerating. September had the highest daily average of new cases since May, despite claims in May that it was under control.
Il Polso
- With 202,000 suspected cases and 1,147 deaths — 94% of them children under five — Bangladesh is living through the largest measles outbreak on Earth this year, a crisis that accelerated sharply in September despite earlier claims of control.
- The collapse was not inevitable: coverage that stood at 96% in 2024 plummeted to 90% and 86% for first and second doses after political protests toppled the government, triggering health worker strikes and vaccine supply failures.
- An emergency campaign in April and May reached nearly 20 million children, but a fatal data gap left 4 million eligible children uncounted — and post-campaign surveillance showed the proportion of unvaccinated confirmed cases barely changed, from 82% to 85%.
- Families in the hardest-hit Sylhet region sold their livelihoods for hospital care and buried children who had never received a single shot, with health workers arriving in villages only after deaths had already occurred.
- A second emergency campaign targeting 3.4 million missed children launched in late September, even as hospitals overflowed and scientists raced to understand why infant immunity is waning faster than expected.
In Bangladesh, a nation once celebrated for its vaccination achievements, political upheaval fractured the quiet infrastructure of public health — and measles, a disease humanity knows how to prevent, has claimed the lives of more than a thousand children under five since March 2025. The outbreak, the world's worst this year, is a reminder that immunization is not merely a medical act but a social contract, one that depends on stable governance, trusted institutions, and the unglamorous work of reaching every last child. What Bangladesh is enduring is not an anomaly but a warning: the margin between protection and catastrophe is thinner than most nations care to believe.
Bangladesh is enduring the world's worst measles outbreak of 2025, with 202,000 suspected cases and 1,147 deaths recorded since mid-March — 94 percent of them children under five. The scale of the crisis is inseparable from the political upheaval that preceded it. Until 2024, Bangladesh had been a vaccination success story, achieving 96 percent first-dose coverage. Then protests ended fifteen years of Prime Minister Sheikh Hasina's rule. Health workers struck. Vaccine orders stalled. By 2025, coverage had fallen to 90 percent for the first dose and 86 percent for the second — both below the 95 percent threshold the WHO considers necessary to prevent outbreaks.
When measles began spreading in March, the government launched an emergency campaign in April and May, claiming it had reached every eligible child between six months and five years old. But a routine health program in June revealed a list containing 4 million more children than the measles campaign had covered. The gap was not merely logistical — it was systemic. The government had conducted only one pre-launch readiness check instead of the standard four, and post-campaign data showed the share of confirmed measles cases among unvaccinated children had barely shifted: 82 percent before the campaign, 85 percent after.
In Sylhet, one of the hardest-hit regions, the human cost took on individual faces. A two-year-old named Arman Hossain died in July, one day after hospitalization. His father had sold the family's auto rickshaw to pay for treatment. No health worker had come to their remote village before the boy fell ill. A nine-month-old girl named Labiba Akter died unvaccinated in June; her father, a carpenter, had never been told that the emergency campaign had lowered the eligible age to six months — making his daughter newly eligible for a shot she never received.
By September, the outbreak was accelerating again, with a daily average of 1,198 new cases — the highest since May. Hospitals in Sylhet were overwhelmed, simultaneously managing a dengue epidemic. A WHO vaccine adviser called Bangladesh's crisis 'a real warning to every country,' noting that prevention is always easier and cheaper than emergency response. At the end of September, the government launched a second campaign targeting the 3.4 million children left behind by the first. Whether it can reach them in time remains the defining question of an outbreak that has already cost too many young lives.
Bangladesh is fighting the world's worst measles outbreak, a crisis that has exposed how quickly a vaccination program can collapse when the systems holding it together fracture. Since mid-March, the country has reported 202,000 suspected cases of measles—22,000 confirmed by laboratory testing—and 1,147 deaths. Ninety-four percent of those deaths have been children under five. No other nation has faced a measles outbreak of this scale this year.
The outbreak did not arrive in a vacuum. Until 2024, Bangladesh had been a vaccination success story. The World Health Organization and UNICEF estimated that year the country achieved 96 percent coverage for the first measles dose and 93 percent for the second. But in 2024, political upheaval swept through the nation. Protests ended 15 years of rule by Prime Minister Sheikh Hasina. In the chaos that followed, health workers went on strike. Vaccine orders stalled. The vaccination programs that had been running smoothly for years simply stopped. By 2025, first-dose coverage had fallen to 90 percent and second-dose coverage to 86 percent—both well below the 95 percent threshold the WHO says is necessary to prevent outbreaks from taking hold.
When measles began spreading in March, Bangladesh responded with urgency. An emergency vaccination campaign launched in April and May, reaching nearly 20 million children between six months and five years old. Cases initially slowed. But the campaign had a fatal flaw: it missed millions of children it was supposed to protect. This became clear in June when another routine health program targeting the same age group had a list containing 4 million more children than the measles campaign had reached. The government had claimed it covered every eligible child. It had not.
The shortcomings ran deeper than simple miscounting. Documents from meetings between the government, the WHO, and other health partners in April and August—reviewed by Reuters—reveal how the rush to act may have undermined the response itself. In April, the government conducted only one round of readiness checks before launching the emergency campaign, instead of the standard four. These checks verify that districts have functioning refrigeration for vaccines, accurate counts of children to be vaccinated, and trained staff ready to administer shots. A single round suggested most—but not all—districts were prepared. By August, the evidence was undeniable: the proportion of children with confirmed measles who had never been vaccinated was virtually unchanged between before the campaign (82 percent) and after it (85 percent).
In Sylhet, one of the hardest-hit regions in a nation of 178 million people, the human cost became visible in individual stories. Amin Mia, 26, watched his two-year-old son Arman Hossain die in July, just 24 hours after being admitted to the hospital. The family had sold their three-wheeled auto rickshaw to pay for treatment. Arman had never been vaccinated. His father said no health workers came to their remote village to offer shots before his son fell ill. "They came only after I buried my son," Amin Mia said. In the town of Chhatak, also in Sylhet, a nine-month-old girl named Labiba Akter died unvaccinated in June. Her father, carpenter Humayun Rashid, said no health worker had informed him that an emergency program in April had lowered the vaccination age to six months from nine—meaning his daughter had become eligible for protection.
By September, the outbreak was accelerating again. Bangladesh reported a daily average of 1,198 new measles cases that month, the highest total since May, despite the Health Minister's May statement that the emergency drive had brought cases in hotspots "almost to zero." In Sylhet's 100-bed Shahid Shamsuddin Ahmed Hospital, which treats measles patients, every ward appeared overwhelmed. On the day Reuters visited in September, 178 patients were admitted. The hospital was also managing a dengue epidemic simultaneously, stretching resources further.
Mark Jit, a WHO vaccine adviser and professor at New York University's School of Global Public Health, framed the stakes plainly: preventing outbreaks through vaccination is easier, cheaper, and safer than responding to emergencies. "The response will stop the outbreak eventually, but in the meantime, many will have had measles, and some will have died," he said. Bangladesh's crisis, he added, is "a real warning to every country." At the end of September, the government launched another campaign targeting 3.4 million children it had previously missed. Scientists in Bangladesh are also investigating why immunity appears to be waning faster than expected in infants, who are normally protected by maternal antibodies. The outbreak continues, and the question now is whether a second emergency effort can reach the children the first one left behind.
Citazioni salienti
This is a real warning to every country. Preventing an outbreak through vaccinations was easier, cheaper and safer than responding to an emergency.— Mark Jit, WHO vaccine adviser and professor at New York University's School of Global Public Health
When preparedness checks are not done properly, it is often the poorest and hardest-to-reach children who miss out on vaccination and pay the price.— Professor Mahmudur Rahman, epidemiologist and chair of Bangladesh's National Verification Committee for Measles and Rubella Elimination
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