The Bali Observer

Monday, 21 September 2026

Badung logs 340 dengue cases, no deaths through August 2026

Badung’s health authorities reported 340 dengue cases and zero deaths from January through August 2026, with monthly cases falling to 28 in August as South Kuta, Abiansemal II and Mengwi I remained the main hotspots.

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Editor: Mursyid Sonsang

· Event date: · 4 min read

Mangupura — — Badung recorded 340 dengue cases between January and August 2026, with monthly cases declining to 28 in August and no dengue-related deaths reported in the regency during that period, according to the Badung Health Agency as cited by local media on 3–6 September 2026.

The data show a marked fall in cases from the early months of the year, but officials stress that transmission has not stopped. The Badung Health Agency continues to identify South Kuta as a priority area because cases there have remained relatively high across much of the period.

Cases fell, but transmission remains uneven

According to figures reported by the Badung Health Agency, Badung recorded 63 dengue cases in January, 57 in February and 44 in March 2026. Cases then rose to 51 in April, fell to 26 in May, increased again to 40 in June and declined to 31 in July and 28 in August.

Three primary health centre catchment areas recorded the highest totals: South Kuta, Abiansemal II and Mengwi I. Together they accounted for 220 cases, or around 64.7 percent of Badung’s January–August total. Health officials said South Kuta continues to receive special attention because dengue cases have remained relatively high almost every month.

  • January: 63 cases
  • April: 51 cases, the highest monthly total after January
  • August: 28 cases
  • January–August total: 340 cases
  • Reported dengue deaths in Badung January–August 2026: none

In South Kuta, monthly cases reached 22 in January and 22 in February, then peaked at 25 in April before declining to 17 in June and 15 in August. Mengwi I recorded notable increases in March, with 12 cases, and July, with 10 cases, while Abiansemal II generally saw between four and nine cases per month over the eight-month period.

Local media reports highlight that Badung’s 2026 pattern contrasts with 2025, when monthly case counts were much higher in several months. One Badung Health Agency official noted that in 2025 the highest monthly dengue count reached 377 cases in February and 88 in August, compared with a 2026 peak of 63 cases in January and 28 in August, indicating a sharp year-on-year decline.

Possible drivers and response measures

Provincial health authorities have reported that dengue cases across Bali fell sharply in 2026 compared with the same period in 2025, but have urged continued vigilance, particularly around the rainy season when risk can rise. The Bali Health Agency has linked higher dengue activity to rainfall patterns, warning that cases can increase as the rainy season begins and advising districts to prepare for potential surges.

In response to dengue risk, Bali’s health authorities have asked local governments to map endemic areas, secure adequate supplies of larvicides and insecticides, and sustain community-based source reduction. In Badung, officials reported strengthening mosquito breeding-site control through campaigns such as 3M Plus (draining, covering and recycling potential water containers), household larva monitoring and “one house, one larva monitor,” alongside routine surveillance and targeted fogging.

Public health experts caution that while these measures are widely used and may contribute to lower transmission, available reports do not provide a formal evaluation linking specific interventions to Badung’s observed decline in dengue cases. Changes in case detection, testing or reporting practices have also not been quantified in the published data.

The World Health Organization describes dengue as a mosquito-borne viral infection that can cause flu-like illness and, in some cases, life-threatening severe dengue. WHO notes that surveillance systems are essential for tracking trends, identifying unusual signals and assessing risk, making continued monitoring important even when reported case numbers fall.

Context for residents and visitors

Provincial officials have reiterated that dengue remains a significant seasonal health risk in Bali despite the recent decline in reported cases. They advise residents and visitors to reduce mosquito breeding sites by draining water containers, covering storage vessels, and removing or recycling items that can collect standing water.

Health authorities recommend seeking medical care if a person develops a sudden fever lasting more than two days, particularly when accompanied by symptoms such as headache, muscle or joint pain, nausea or rash, which can indicate dengue infection. Early diagnosis and appropriate clinical management are emphasised as key to preventing progression to severe dengue.

Sources

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