Health experts warn that the unfolding crisis serves as an urgent international caution regarding the fragility of public health systems when routine immunization programs falter.
The Collapse of Herd Immunity
Before the upheaval of 2025, Bangladesh had been widely regarded as a public health success story in routine immunizations. Data from the WHO and UNICEF indicate that the country achieved 96 percent coverage for the first vaccine dose and 93 percent for the second dose in 2024. However, nationwide protests, subsequent political instability, worker strikes, and delayed vaccine procurements severely disrupted delivery channels.
By 2025, WHO and UNICEF estimates showed that first-dose coverage had dropped to 90 percent, while second-dose coverage fell to 86 percent. Both figures sit significantly below the 95 percent threshold required to maintain herd immunity against measles. Furthermore, international health documents revealed that official data quality issues between 2023 and 2025 occasionally showed coverage exceeding 100 percent of target populations, masking underlying counting errors and delivery gaps.
Emergency Rollout Shortcomings and Data Discrepancies
When cases surged, the government responded by launching a swift emergency vaccination campaign in April and May that inoculated nearly 20 million children. Initially, officials reported that the drive had successfully brought infections in hotspots under control. However, subsequent health interventions revealed systemic blind spots.
A routine health campaign in June identified a target list containing four million more children than the emergency measles drive, despite covering the exact same demographic age group. Confidential planning documents from April and August meetings between government officials and international health partners showed that time constraints led authorities to conduct only a single round of preparedness checks instead of the recommended four rounds. These checks—designed to verify cold-chain refrigeration and population estimates—left critical gaps in remote regions.
Professor Mahmudur Rahman, chair of Bangladesh’s National Verification Committee for Measles and Rubella Elimination, noted that inadequate preparedness checks disproportionately harmed the poorest and hardest-to-reach children. In rural areas such as Sylhet, families reported that health outreach teams arrived only after a child had already succumbed to the virus. Official figures attribute 180 deaths to measles in Sylhet alone, where local hospitals have struggled with an influx of patients amid a concurrent dengue epidemic.
Looking Ahead and Institutional Response
In response to persistent gaps, the Bangladeshi government launched a targeted campaign in late September aimed at reaching 3.4 million children who missed previous rounds. Health officials have pledged to engage local community networks to ensure remote families are included. Concurrently, public health agencies and researchers are examining whether to expand vaccination guidelines to children over five—who currently account for a third of all cases—while also studying accelerated waning immunity in infants under six months.
Reporting source: tbsnews.net.