Chattogram added 11 cases in the past 24 hours, reaching 3,188 cases in 2025 and 31 patients hospitalized in the city. The local signal fits a nationwide upswing after years of low circulation, alongside very high positivity reported by private clinics.
After a period of low detection, Bangladesh is seeing a return of chikungunya in 2024–2025; Chattogram is nearing or surpassing ~3,000 cases in 2025, and Dhaka has confirmed hundreds by laboratory testing.
In 2017, the country recorded its largest documented outbreak (centered in Dhaka and spreading to ≥17 districts), a historical reference that illustrates the virus’s capacity to expand in urban settings with Aedes mosquitoes.
Drivers of the current increase
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Monsoon rain–sun alternation that multiplies breeding sites for Aedes aegypti/albopictus.
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High urban exposure (standing water, dense housing) and co-circulation with dengue, which can mask cases unless CHIKV testing is specifically performed.
More information on risks in Bangladesh on Global Risk Atlas
