According to the municipal Department of Health, the city saw 831 new cases from October 14-20, raising the total number of infection cases since early this year to 7,646. No deaths have been reported.
The number of patients has increased since September, it said, adding that districts with a high number of cases included Ha Dong, Cau Giay, Nam Tu Liem, Dong Da, Thuong Tin, Thanh Tri, Hoang Mai, Thanh Oai, Hoai Duc and Bac Tu Liem.
The Hanoi Centre for Preventive Medicine warned that dengue fever will continue to spread this year as the peak of the epidemic normally falls in November.
The centre has asked health stations across the city to monitor the epidemic, while deploying campaigns to clean up the environment and spray chemicals to kill mosquitoes and larva.
At the same time, health staff have been sent to dengue fever hotspots to carry out prevention and control activities.