Bangladesh’s Concurrent Dengue and Measles Outbreaks Strain Healthcare System

• Dengue fever is rapidly escalating inpatient and mortality burden, with 77,672 hospitalizations and 239 deaths reported from Jan. 1 to Sep. 29 and a sharp rise in monthly deaths during September.  

• Measles transmission remains nationwide and is sustained by significant immunity gaps, particularly among unvaccinated or partially vaccinated children.  

• The overlapping outbreaks are amplifying existing structural weaknesses in the health system, including bed shortages, overcrowding at major referral hospitals, weak referral pathways, limited lower-level capacity, and insufficient surge preparedness.  

Bangladesh’s dengue outbreak is worsening, with cases rising sharply following heavy monsoon rains in late August. For Jan.1-Sep. 28, health authorities reported 77,672 dengue-related hospitalizations and 237 deaths. Hospital admissions have been reported across all eight divisions. Dhaka recorded the highest cumulative number, with 13,515 admissions, followed by Khulna with 12,577, Chattogram with 11,465, and Barishal with 10,317. Rangpur and Sylhet are also recording steep relative increases. The continued transmission across all eight divisions, combined with the rapid geographic spread of cases, indicates that case numbers are likely to increase further in the coming weeks.  

As of Sep. 29, 142 dengue deaths had been recorded during September, the highest monthly total of the year to date and nearly three times the 43 deaths reported in August. This followed 36 deaths in July and 13 in June. The sustained month-on-month increase indicates that the mortality burden is intensifying as the outbreak expands.  

The Government of Bangladesh launched a three-month nationwide dengue prevention campaign on Sep.12, emphasizing public awareness, elimination of mosquito breeding sites, environmental cleanliness, and coordinated engagement across government, private-sector and community partners.  

Bangladesh’s measles outbreak remains nationwide and has re-accelerated after a partial mid-year decline. As of Sep. 28, health authorities had recorded 190,510 suspected cases and 21,392 laboratory-confirmed cases since March 15. By the end of June, all 64 districts had reported cases. Dhaka Division accounted for the largest cumulative hospital-admission burden, followed by Chattogram Division. Available September data indicate renewed increases in reported cases, hospitalizations, and deaths following the earlier decline.  

The measles outbreak in Bangladesh is occurring in the context of suboptimal population immunity, with most cases (91 percent) occurring among unvaccinated or partially vaccinated children aged 1-14 years. Persistent immunity gaps are likely to sustain transmission in the near term.   

Dengue activity is likely to remain elevated through October, and may peak between late October and early November, with further increases in cases, hospitalizations, and deaths possible while favorable conditions for mosquito-borne transmission persists.  

The measles outbreak in Bangladesh is occurring in the context of suboptimal population immunity. The risk at the national level is assessed as high due to ongoing nationwide transmission, documented immunity gaps, and the occurrence of suspected measles-related deaths. Measles is endemic across the South-East Asia region, and the regional risk is also high.  

The simultaneous burden of dengue and measles and continued high caseloads will sustain substantial pressure on hospitals in the most affected divisions and could contribute to delays in routine and urgent healthcare services. Competition for inpatient beds, clinical staff, diagnostic services, and other medical resources could contribute to longer waiting times and delays in routine and urgent care. Continued reliance on tertiary facilities rather than lower-level services may further concentrate this pressure unless referral pathways and decentralized capacity improve. This represents the most complete data available as of Sept. 28.  

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