Hanoi reports new dengue clusters as rainy season raises infection risk
VOV.VN - Health authorities in Hanoi have warned that dengue infections could rise in the coming weeks despite a slight decline in weekly cases, as new outbreak clusters emerge during the city’s rainy season.
According to the Hanoi Centre for Disease Control (CDC Hanoi), the capital city recorded 62 dengue cases across 33 wards and communes from June 26 to July 3, down 13 from the previous week. However, the total number of cases since the beginning of 2026 has reached 555, up significantly from 331 in the same period last year, with no deaths reported.
Three new dengue clusters were detected during the week, bringing the total number of outbreaks reported since the beginning of the year to 16, eight of which remain active.
Health officials said the rainy season provides favourable conditions for mosquitoes to breed, increasing the risk of further transmission and the emergence of additional outbreak clusters across the city.
Other infectious diseases also continue to circulate. Hanoi reported 92 cases of hand, foot and mouth disease during the week, bringing the cumulative total to more than 3,800 cases this year. New community clusters have also been detected.
The city also recorded 20 COVID-19 cases, seven measles cases, two whooping cough cases, one case of Streptococcus suis infection and one case of tetanus in an adult between June 26 to July 3.
No new animal rabies outbreaks were reported, although Hanoi has recorded eight outbreaks among dogs since the beginning of the year. The Centre warned that as rabies among dogs remains a concern, further outbreaks could occur and human deaths may be reported if people fail to seek prompt post-exposure treatment after being bitten by dogs or cats.
The city has stepped up disease surveillance, mosquito control, environmental sanitation campaigns and public awareness efforts. Local health authorities urge residents to eliminate mosquito breeding sites, seek medical care if symptoms develop and follow recommended vaccination guidance where applicable.
Dengue cases rise, outbreaks become more unpredictable
Vietnam's health authorities are warning of increasingly complex dengue fever developments as infections surge, outbreak cycles become shorter and traditional seasonal patterns begin to shift, prompting calls for heightened vigilance and stronger disease prevention efforts.
