Bangladesh is battling measles. It’s a ‘real warning’ to other nations

Measles is a highly contagious infectious disease. It commonly causes high fever, coughing and a distinctive rash. Because it spreads so easily, vaccination gaps can quickly become community-wide outbreaks. The disease matters most when children lack protection and health services cannot reach them early.

Young children are particularly vulnerable. In Bangladesh, 94 percent of reported measles deaths were among children under five. The WHO says measles usually kills two or three people per 1,000 cases, but it can be more deadly in poorer countries. Malnutrition is one factor that raises the danger.

Bangladesh’s experience shows what happens when protection weakens. Two unvaccinated children described in the article died: Arman Hossain was two, and Labiba Akter was nine months old. Their deaths also reflected missed opportunities for vaccination. Health workers did not reach their families in time, even when emergency rules lowered the vaccination age.

Bangladesh is battling the world’s worst measles outbreak, according to the article. From the outbreak’s start in mid-March through October 9, the country reported 202,000 suspected cases. Of these, 22,000 were laboratory-confirmed. The suspected total was higher than in any other country that year.

The death toll reached 1,147 people, according to the WHO. Children under five accounted for 94 percent of reported deaths. The article links the danger partly to vaccination gaps and says measles can be deadlier in poorer countries because of conditions such as malnutrition.

The outbreak was still active in September. Bangladesh reported an average of 1,198 new measles cases each day, the highest daily total since May. These figures show that emergency action had not yet stopped transmission. They also demonstrate how quickly an outbreak can grow when routine vaccination coverage falls below the level needed to prevent spread.

Bangladesh had been a vaccination success story. In 2024, WHO and UNICEF estimated that 96 percent of children received the first measles vaccine dose and 93 percent received the second. But political upheaval in 2025 weakened the routine programme and created gaps in children’s protection.

Protests ended 15 years of Prime Minister Sheikh Hasina’s rule. During the political turmoil that followed, health workers went on strike. Vaccine orders were delayed. Follow-up vaccinations that normally accompany routine programmes were disrupted. These interruptions reduced the system’s ability to vaccinate children on schedule and reach those who needed another dose.

By 2025, estimated coverage had fallen to 90 percent for the first dose and 86 percent for the second. Both figures were below the roughly 95 percent level the WHO says is needed to prevent outbreaks. The decline left more children unprotected, helping create conditions for the large outbreak that followed.

Measles spreads exceptionally easily, so preventing outbreaks requires nearly all children to be immune. The WHO says coverage of about 95 percent is needed. At that level, enough protected people interrupt transmission and shield those who are not immune. This community protection is often called herd immunity.

The threshold matters because one vaccine dose does not protect every child. Bangladesh gives a second dose to capture the small percentage who do not develop immunity after the first. When coverage drops, unprotected children can cluster in communities. A highly contagious disease can then move from one missed child to many others.

Bangladesh almost reached the target in recent years, but coverage fell in 2025. First-dose coverage was estimated at 90 percent, and second-dose coverage at 86 percent. The resulting gap helped set the stage for the outbreak. The country’s experience shows that even a shortfall of several percentage points can have serious consequences.

An emergency vaccination campaign works only when officials can identify children, locate them and persuade families to participate. Bangladesh struggled on all three fronts. A Reuters review found weak data, inadequate outreach and shortcomings in preparation. WHO and UNICEF also questioned official vaccination data for 2023 to 2025.

Preliminary figures sometimes showed more vaccinations than targeted children, even exceeding 100 percent. That suggested errors in counting doses or estimating target populations. The emergency response therefore risked missing children or misdirecting resources. The article also describes families in remote Sylhet villages who said no health worker came to offer vaccination or explain the campaign.

The emergency programme lowered the vaccination age from nine months to six, but Labiba Akter’s father said nobody told the family. Arman Hossain’s father said workers arrived only after his son’s burial. In September, cases still averaged 1,198 daily. Better records and stronger outreach were needed to close the gaps.

Routine vaccination programmes do more than deliver individual doses. They maintain high protection across whole communities and help prevent measles from finding enough susceptible children to continue spreading. If services stop, even briefly, missed children accumulate. The risk becomes greater when follow-up doses and outreach are also interrupted.

Bangladesh illustrates the mechanism. Political turmoil led health workers to strike, delayed vaccine orders and disrupted routine follow-up vaccinations. Coverage fell from 2024 estimates of 96 percent for the first dose and 93 percent for the second to 90 percent and 86 percent in 2025. That left more children without full protection.

The consequences were severe. Bangladesh recorded 202,000 suspected cases and 1,147 deaths by October 9. Ninety-four percent of reported deaths were among children under five. The experience shows that restoring services after disruption is harder than maintaining them, especially when weak data and limited outreach hide the children most at risk.

Routine vaccination protects children before measles begins spreading. It keeps community coverage near the level needed to prevent outbreaks, avoiding the sudden need for emergency campaigns, hospital treatment and crisis coordination. It also reduces the number of children who become seriously ill or die.

Once an outbreak begins, officials must find missed children quickly, deliver vaccines and communicate with families while transmission continues. Bangladesh’s response was weakened by poor data, delayed preparation and inadequate outreach. Some remote parents said health workers did not reach them in time. The country still recorded an average of 1,198 new cases daily in September.

WHO vaccine adviser Mark Jit said preventing an outbreak was easier, cheaper and safer than responding to one. Emergency action may eventually stop transmission, but people can suffer in the meantime. Bangladesh’s 1,147 deaths show the human cost of allowing routine coverage to fall below about 95 percent.