The measles outbreak in Bangladesh has been ongoing for more than a month, raising concerns over a significant gap between suspected and confirmed cases and deaths.
As of Thursday, 34 people have died from confirmed measles, while 172 deaths have been recorded as suspected cases—bringing the total number of deaths linked to measles or its symptoms to 206.
The disparity has prompted questions over whether all the deaths were caused by measles or if another disease may be circulating.
Health authorities, however, say the gap is primarily due to limited testing capacity, especially in the early phase of the outbreak. A shortage of funds led to fewer sample tests being conducted, resulting in a higher number of suspected cases compared to confirmed ones. Officials maintain that no other outbreak has been detected.
What the data shows
According to data from the Directorate General of Health Services (DGHS), 206 people have died from measles or its symptoms since March 15. Of them, 34 deaths were confirmed through testing, while 172 remain classified as suspected.
During this period, 20,352 suspected cases have been identified nationwide, with 13,129 patients requiring hospitalisation. Among them, 3,065 cases have been laboratory-confirmed. A total of 10,496 patients have recovered and been discharged.
Why the discrepancy exists
DGHS Additional Director General (Administration) Prof Dr Md Zahid Raihan said the gap—of roughly 17,000 cases—between suspected and confirmed patients is largely due to limited testing in the early stages.
“One of the reasons for this gap is that we initially collected fewer samples for testing due to funding constraints,” he told Bangla Tribune.
He explained that operational plans had been suspended, creating a financial strain that affected basic logistics, including transportation for sample collection.
“There were costs involved even for lower-grade staff to travel from civil surgeon offices to hospitals or remote areas. Altogether, this created a funding crisis, and sample testing nearly came to a halt,” he said.
Although the situation has improved and samples are now being collected more promptly from admitted patients, he noted that it is still not possible to test every case. Delays in receiving results also contribute to the discrepancy.
Time needed for confirmation
Health officials said it typically takes around 48 hours to confirm measles through laboratory testing. In many cases, patients—especially children—die before results are available, leading to their classification as suspected cases.
“For instance, a severely ill child with pneumonia may be admitted and tested, but if the child dies before the report arrives, the case remains ‘suspected’ rather than confirmed,” Zahid Raihan explained.
He added that while patients showing symptoms in outbreak areas are treated as measles cases in practice, official reporting requires laboratory confirmation. As a result, data is maintained separately for suspected and confirmed cases and deaths.
Has the outbreak pattern changed?
Public health experts and officials attribute the outbreak primarily to gaps in vaccination coverage, though some have called for further research to determine if the disease pattern has changed.
In response, the government has lowered the minimum vaccination age from nine months to six months and launched a special immunisation campaign from April 5. The programme aims to vaccinate 1.2 million children across 30 upazilas in 18 districts.
Health Minister Sardar Md Sakhawat Hossain said a nationwide vaccination drive will begin on April 20, ahead of the previously scheduled May 3 rollout.
“We were able to procure the required vaccines from UNICEF, allowing us to bring the programme forward,” he said.
He acknowledged that the outbreak spread rapidly and that authorities were initially unprepared, but said measures are now in place to contain it. He also blamed mismanagement by previous governments for the situation.
Public health expert Dr Mushtaq Hossain noted that infections among children under six months have been reported not only in Bangladesh but also in other countries.
“It is still unclear whether this indicates a change in the disease pattern. If so, vaccine adjustments may be needed. However, the current vaccine remains effective,” he said.
Prof Zahid Raihan added that there is no evidence of mutation or change in the nature of the virus.
“It is the same measles as before. The outbreak is mainly due to gaps in vaccination,” he said.