Hanoi is witnessing a significant rise in dengue fever cases, prompting urgent public health interventions. The mosquito-borne viral disease, prevalent during the monsoon season, has impacted multiple districts, with hospitals reporting increased patient admissions. Health authorities are emphasizing preventive measures, including vector control, community awareness, and timely medical attention for symptomatic individuals. Experts warn that climate conditions, urban density, and inadequate sanitation can exacerbate transmission.