Overview

• Bangladesh reported 12 dengue deaths and 740 new hospitalisations in 24 hours, raising the 2025 toll to at least 179 deaths and nearly 42,000 infections.
• Doctors in Bangladesh report wards filling with children presenting with high fever, rashes and dehydration, and they warn of mounting pressure on hospitals.
• Entomologists in Bangladesh attribute the surge to longer monsoon seasons, rapid urbanisation, poor waste management and standing water at construction sites.
• Hong Kong health data show imported dengue climbed from a few dozen cases annually in 2005–2012 to nearly 200 by 2019, with 161 cases in 2024 after travel resumed.
• Hong Kong has recorded a record 21 imported chikungunya cases this year, while a study in France finds the Asian tiger mosquito’s spread accelerated from about 4 miles per year in 2006 to 12 miles per year in 2024.