The number of dengue fever cases in the capital has decreased to 2,200 year-to-date, compared to more than 6,000 in the same period last year.
Jakarta Health Agency head Dien Emawati said Sunday that its weekly operations had been successful as shown by the significant decrease on the number of the cases.
She urged residents be aware of the possibility of contracting dengue fever or other seasonal diseases.
News portal beritajakarta.com said data from the agency showed that the city was experiencing a decreasing trend in the number of dengue cases.
In 2008, it recorded 28,400 cases, but this dropped to 18,000 a year later.
Some areas, however, are still struggling with the disease, including up-scale housing areas in Menteng, Central Jakarta, and Pondok Indah, South Jakarta.
The agency said earlier that the prevalence of cases in these areas was due to poor control of stagnant water and the refusal of residents to allow health officials into their homes to fumigate or monitor conditions.