Asia-Pacific Regional Summary
Report Date: September 18, 2026
Latest Data Update: Dashboard updated with September 2026 data from national health authorities, WHO WPRO/SEARO, PAHO, ECDC, and media reports. Country cut-off dates differ; totals should not be treated as a single aligned regional census.
DENGUE, CHIKUNGUNYA, AND ZIKA IN ASIA-PACIFIC
Global Context for Asia
Asia-Pacific remains a high-risk region for mosquito-borne diseases as of mid-September 2026. Dengue transmission is still intense in the Philippines, Sri Lanka, Indonesia, Viet Nam, Malaysia, Bangladesh, and Cambodia. Singapore remains a low-burden outlier (2,337 cases by EW 36, 29% below 2025). Chikungunya has resurged in Guangdong, China, while Kerala continues to report monsoon-season activity. Zika remains sporadic, with eight laboratory-confirmed cases in Singapore and no active clusters.
Global 2026 Outlook (as of September):
• Dengue: Asia-Pacific reporting exceeds 630,000 cases and 1,100 deaths on mixed cut-off dates. Globally, ECDC recorded over 1.5 million cases and 500+ deaths by 31 July; Hong Kong CHP cited about 1.9 million cases and 1,000+ deaths worldwide through July. The Americas remain the largest reported burden (PAHO: 1.60 million suspected cases, 507 deaths to EW 33) but are 58% below 2025.
• Chikungunya: Guangdong reported 733 local cases as of 31 August 2026 (496 in August). Kerala reported 105 confirmed and 62 probable cases as of 4 August 2026. CDC lists India, Indonesia, Philippines, and Thailand as elevated-risk destinations.
• Zika: Low-level activity. Singapore recorded 8 cases in 2026 (no new cases since 27 August; no active cluster as of 2 September). WHO’s May 2026 update found no large 2026 Asian outbreaks comparable to dengue.
• CDC Travel Advisories: Global dengue notice updated 2 September 2026; continuous risk in several Asian destinations.
BANGLADESH
Last Updated: September 2026
DENGUE - MAJOR OUTBREAK:
• 2026 Year-to-Date: 58,400 cases and 176 deaths (as of 17 September 2026)
• Total Cases 2025: 102,562 cases (412 deaths)
• Trend: Sharp September surge; 79 deaths in the first 17 days of September versus 43 in August and 36 in July. DGHS reported 1,484 hospitalisations in the latest 24 hours. August recorded 20,536 admissions, the third-highest monthly total since 2000.
• Status: Transmission in all 64 districts; IEDCR warns late September–October remains high risk. Hospitals are also managing a concurrent measles caseload.
• 2026 Year-to-Date: 58,400 cases and 176 deaths (as of 17 September 2026)
• Total Cases 2025: 102,562 cases (412 deaths)
• Trend: Sharp September surge; 79 deaths in the first 17 days of September versus 43 in August and 36 in July. DGHS reported 1,484 hospitalisations in the latest 24 hours. August recorded 20,536 admissions, the third-highest monthly total since 2000.
• Status: Transmission in all 64 districts; IEDCR warns late September–October remains high risk. Hospitals are also managing a concurrent measles caseload.
CHIKUNGUNYA:
• Status: Active surveillance ongoing; no large 2026 outbreak total published.
• Status: Active surveillance ongoing; no large 2026 outbreak total published.
ZIKA:
• Status: No major 2026 outbreak reported. Bangladesh recorded 10 autochthonous cases around Dhaka in 2024 (WHO).
• Status: No major 2026 outbreak reported. Bangladesh recorded 10 autochthonous cases around Dhaka in 2024 (WHO).
Public Health Response: Nationwide cleanup and awareness campaigns; intensified hospital surveillance during peak season.
Data Verification Sources:
- Bangladesh DGHS Health Emergency Operation Centre (17 September 2026)
- Prothom Alo / The Business Standard (September 2026)
- WHO SEARO Epidemiological Bulletin
CAMBODIA
Last Updated: September 2026
DENGUE:
• 2026 Year-to-Date: 54,697 cases (as of 20 August 2026, WHO); Hong Kong CHP reported over 60,000 cases so far this year as of 11 September 2026
• Earlier WHO WPRO Update 751: 40,915 cases and 58 deaths as of 26 July 2026 (CFR 0.1%), 67.7% above the same period in 2025 (24,397 cases)
• Status: Weekly cases remained above the epidemic threshold for most of 2026, with a sharp increase from week 24. Among the larger 2026 outbreaks in Asia.
• 2026 Year-to-Date: 54,697 cases (as of 20 August 2026, WHO); Hong Kong CHP reported over 60,000 cases so far this year as of 11 September 2026
• Earlier WHO WPRO Update 751: 40,915 cases and 58 deaths as of 26 July 2026 (CFR 0.1%), 67.7% above the same period in 2025 (24,397 cases)
• Status: Weekly cases remained above the epidemic threshold for most of 2026, with a sharp increase from week 24. Among the larger 2026 outbreaks in Asia.
Data Verification Sources:
- WHO Western Pacific Region Office (WPRO) Dengue Situation Update 751 (6 August 2026)
- Hong Kong CHP overseas dengue figures (20 August / 11 September 2026)
- Cambodia National Dengue Surveillance System (NDCP/CNM/MOH)
CHINA (Guangdong Province)
Last Updated: September 2026
DENGUE:
• 2026 Year-to-Date (Guangdong local): 431 local cases as of 31 August 2026, including 150 in August
• National (WHO WPRO): 255 cases reported in June 2026, up from 222 in May and 13.3% above June 2025
• 2025 comparison: Guangdong recorded over 3,500 local dengue cases in 2025
• Status: Seasonal transmission active; NDCPA has warned of rising vector-borne disease risk in southern provinces.
• 2026 Year-to-Date (Guangdong local): 431 local cases as of 31 August 2026, including 150 in August
• National (WHO WPRO): 255 cases reported in June 2026, up from 222 in May and 13.3% above June 2025
• 2025 comparison: Guangdong recorded over 3,500 local dengue cases in 2025
• Status: Seasonal transmission active; NDCPA has warned of rising vector-borne disease risk in southern provinces.
CHIKUNGUNYA:
• 2026 Year-to-Date (Guangdong local): 733 local cases as of 31 August 2026
• Trend: 496 cases in August, up sharply from 35 in June and 170 in July
• Status: Largest current chikungunya cluster in East Asia this year; follows the 2025 Guangdong outbreak.
• 2026 Year-to-Date (Guangdong local): 733 local cases as of 31 August 2026
• Trend: 496 cases in August, up sharply from 35 in June and 170 in July
• Status: Largest current chikungunya cluster in East Asia this year; follows the 2025 Guangdong outbreak.
Data Verification Sources:
- Guangdong Provincial Disease Control and Prevention Administration (via Hong Kong CHP, 11 September 2026)
- WHO WPRO Dengue Situation Update 751
- China National Disease Control and Prevention Administration
INDIA
Last Updated: September 2026
DENGUE:
• 2026 Year-to-Date: 33,060 cases as of July 2026 (WHO SEARO), compared with 35,250 in the same period of 2025
• July 2026: 10,122 cases, a 53% increase from June (6,625)
• Status: Year-round endemic transmission; monsoon increase underway but cumulative cases remain slightly below 2025. Kerala reported 40 dengue deaths so far in 2026 (state health data, 6 September).
• 2026 Year-to-Date: 33,060 cases as of July 2026 (WHO SEARO), compared with 35,250 in the same period of 2025
• July 2026: 10,122 cases, a 53% increase from June (6,625)
• Status: Year-round endemic transmission; monsoon increase underway but cumulative cases remain slightly below 2025. Kerala reported 40 dengue deaths so far in 2026 (state health data, 6 September).
CHIKUNGUNYA:
• Kerala: 105 confirmed and 62 probable cases as of 4 August 2026, concentrated in Thiruvananthapuram
• Status: Continued monsoon-season circulation; CDC lists India among elevated-risk destinations for travellers.
• Kerala: 105 confirmed and 62 probable cases as of 4 August 2026, concentrated in Thiruvananthapuram
• Status: Continued monsoon-season circulation; CDC lists India among elevated-risk destinations for travellers.
ZIKA:
• Status: No large 2026 national outbreak published. India reported 151 cases in 2024 (Gujarat, Karnataka, Maharashtra).
• Status: No large 2026 national outbreak published. India reported 151 cases in 2024 (Gujarat, Karnataka, Maharashtra).
Data Verification Sources:
- WHO SEARO Epidemiological Bulletin, 16th edition (situation as of 10 August 2026)
- India NCVBDC
- Kerala Health Department / media reports (August–September 2026)
INDONESIA
Last Updated: September 2026
DENGUE:
• 2026 Year-to-Date: 75,991 cases (WHO, as of 20 August 2026)
• WHO WPRO Update 751: 75,431 cases and 203 deaths from January to July 2026 (as of 5 August); monthly reported cases have decreased since January
• Status: Still among the highest national caseloads in Asia; Hong Kong CHP listed Indonesia among countries with over 70,000 cases so far in 2026.
• 2026 Year-to-Date: 75,991 cases (WHO, as of 20 August 2026)
• WHO WPRO Update 751: 75,431 cases and 203 deaths from January to July 2026 (as of 5 August); monthly reported cases have decreased since January
• Status: Still among the highest national caseloads in Asia; Hong Kong CHP listed Indonesia among countries with over 70,000 cases so far in 2026.
CHIKUNGUNYA:
• Status: CDC lists Indonesia as elevated risk for travellers; no new national 2026 outbreak total published since early-year Bali (Klungkung) signals.
• Status: CDC lists Indonesia as elevated risk for travellers; no new national 2026 outbreak total published since early-year Bali (Klungkung) signals.
Data Verification Sources:
- WHO WPRO Dengue Situation Update 751 (6 August 2026)
- Hong Kong CHP overseas dengue figures (20 August 2026)
- Indonesia Ministry of Health
LAOS
Last Updated: September 2026
DENGUE:
• 2026 Year-to-Date: 3,574 cases (WHO, as of 20 August 2026)
• WHO WPRO Update 751: 3,029 cases as of 1 August 2026, 35.7% lower than 4,712 cases in the same period of 2025; 179 cases in 26 July–1 August with no deaths that week
• Status: Caseload remains below 2025. Wolbachia-enhanced mosquito releases began in Savannakhet Province on 9 June 2026.
• 2026 Year-to-Date: 3,574 cases (WHO, as of 20 August 2026)
• WHO WPRO Update 751: 3,029 cases as of 1 August 2026, 35.7% lower than 4,712 cases in the same period of 2025; 179 cases in 26 July–1 August with no deaths that week
• Status: Caseload remains below 2025. Wolbachia-enhanced mosquito releases began in Savannakhet Province on 9 June 2026.
Data Verification Sources:
- WHO WPRO Dengue Situation Update 751
- Hong Kong CHP overseas dengue figures (20 August 2026)
- National Centre for Laboratory and Epidemiology, Ministry of Health, Lao PDR
MALDIVES
Last Updated: September 2026
DENGUE:
• 2026 Year-to-Date: 2,969 cases reported through May 2026 (latest published national total)
• Trend: Surge versus 2025; monthly cases rose from 648 in April to 778 in May. WHO SEARO July–August bulletins did not yet include an updated Maldives monthly total.
• Status: High activity reported across atolls earlier in 2026; health authorities continue to urge vigilance. CDC dengue travel notice still lists Maldives.
• 2026 Year-to-Date: 2,969 cases reported through May 2026 (latest published national total)
• Trend: Surge versus 2025; monthly cases rose from 648 in April to 778 in May. WHO SEARO July–August bulletins did not yet include an updated Maldives monthly total.
• Status: High activity reported across atolls earlier in 2026; health authorities continue to urge vigilance. CDC dengue travel notice still lists Maldives.
Data Verification Sources:
- Health Protection Agency (HPA) Maldives (May 2026 total)
- WHO SEARO Epidemiological Bulletin (June–August 2026 editions)
- CDC Global Dengue travel notice (2 September 2026)
MALAYSIA
Last Updated: September 2026
DENGUE:
• 2026 Year-to-Date: 65,979 cases and 62 deaths as of epidemiological week 35 (Cabinet/KKM briefing, 9 September 2026)
• Same period 2025: 39,616 cases and 32 deaths
• Trend: +66% cases and +93.8% deaths versus 2025. Earlier year position (programme data to May): 28,871 cases in 2026 versus 26,556 in 2025 (+9%)
• Status: Among the highest caseloads in ASEAN. iDengue showed 68,052 cases as of 12 September 2026. Wolbachia programme continues; authorities noted fogging can reduce Wolbachia mosquitoes.
• 2026 Year-to-Date: 65,979 cases and 62 deaths as of epidemiological week 35 (Cabinet/KKM briefing, 9 September 2026)
• Same period 2025: 39,616 cases and 32 deaths
• Trend: +66% cases and +93.8% deaths versus 2025. Earlier year position (programme data to May): 28,871 cases in 2026 versus 26,556 in 2025 (+9%)
• Status: Among the highest caseloads in ASEAN. iDengue showed 68,052 cases as of 12 September 2026. Wolbachia programme continues; authorities noted fogging can reduce Wolbachia mosquitoes.
Data Verification Sources:
- Malaysia Ministry of Health / Cabinet briefing (9 September 2026)
- Bernama / Newswav (EW 35 figures)
- iDengue (12 September 2026 snapshot)
NEPAL
Last Updated: September 2026
DENGUE:
• 2026 Year-to-Date: 5,119 cases and 3 deaths as of 24 August 2026 (EDCD), reported from 75 of 77 districts
• Earlier: 2,844 cases and 2 deaths from 74 districts as of 15 August 2026. WHO SEARO: 732 cases in July, a 109% increase from June (351)
• Status: Monsoon/post-monsoon risk remains high. Baglung reported 1,403 cases since Shrawan (mid-July). EDCD warned the next two months remain favourable for transmission.
• 2026 Year-to-Date: 5,119 cases and 3 deaths as of 24 August 2026 (EDCD), reported from 75 of 77 districts
• Earlier: 2,844 cases and 2 deaths from 74 districts as of 15 August 2026. WHO SEARO: 732 cases in July, a 109% increase from June (351)
• Status: Monsoon/post-monsoon risk remains high. Baglung reported 1,403 cases since Shrawan (mid-July). EDCD warned the next two months remain favourable for transmission.
Data Verification Sources:
- Nepal Epidemiology and Disease Control Division (EDCD)
- The Himalayan Times / myRepublica (August 2026)
- WHO SEARO Epidemiological Bulletin, 16th edition
PHILIPPINES
Last Updated: September 2026
DENGUE:
• 2026 Year-to-Date: 138,538 cases from 4 January to 5 September 2026 — 36% lower than 217,693 cases in the same period of 2025
• Deaths: 510 as of 29 August 2026 (CFR 0.04%)
• Trend: Rainy-season upswing. 17,788 cases from 9–22 August, up 17% from 15,211 in 26 July–8 August. Clusters reported in 2,760 barangays; highest cluster counts in Regions III, VII and I
• Status: Largest reported 2026 caseload in Asia-Pacific. DOH warns against complacency while rains continue.
• 2026 Year-to-Date: 138,538 cases from 4 January to 5 September 2026 — 36% lower than 217,693 cases in the same period of 2025
• Deaths: 510 as of 29 August 2026 (CFR 0.04%)
• Trend: Rainy-season upswing. 17,788 cases from 9–22 August, up 17% from 15,211 in 26 July–8 August. Clusters reported in 2,760 barangays; highest cluster counts in Regions III, VII and I
• Status: Largest reported 2026 caseload in Asia-Pacific. DOH warns against complacency while rains continue.
Data Verification Sources:
- Department of Health (DOH), Philippines
- Philippine Star / SunStar (16 September 2026)
- Outbreak News Today (7 September 2026)
SINGAPORE
Last Updated: September 2026
DENGUE:
• 2026 Year-to-Date: 2,337 cases as of EW 36 (6–12 September 2026), 29% below 3,308 cases at EW 36 2025
• Latest weekly total: 73 cases in EW 36, down from 87 in EW 35 and from 122 in EW 29
• Deaths: 1 in Q1 and 1 in Q2 2026 (NEA quarterly surveillance); Q3 not yet published
• Serotype: DEN-3 predominant in Q2 2026, followed by DEN-2. WHO WPRO July snapshot: DENV-3 52.1%, DENV-2 45.3%
• Clusters (14 September): 11 active, including 3 red — Ho Ching/Kang Ching (73), Luxus Hill/Seletar Green (64), Fernvale/Jalan Kayu (63). The 258-case Countryside/Florissa Park cluster has closed
• Status: Low-burden relative to the region; weekly cases declining during the May–October peak. Population immunity to all four serotypes remains low.
• 2026 Year-to-Date: 2,337 cases as of EW 36 (6–12 September 2026), 29% below 3,308 cases at EW 36 2025
• Latest weekly total: 73 cases in EW 36, down from 87 in EW 35 and from 122 in EW 29
• Deaths: 1 in Q1 and 1 in Q2 2026 (NEA quarterly surveillance); Q3 not yet published
• Serotype: DEN-3 predominant in Q2 2026, followed by DEN-2. WHO WPRO July snapshot: DENV-3 52.1%, DENV-2 45.3%
• Clusters (14 September): 11 active, including 3 red — Ho Ching/Kang Ching (73), Luxus Hill/Seletar Green (64), Fernvale/Jalan Kayu (63). The 258-case Countryside/Florissa Park cluster has closed
• Status: Low-burden relative to the region; weekly cases declining during the May–October peak. Population immunity to all four serotypes remains low.
CHIKUNGUNYA:
• Status: No chikungunya clusters. Majority of infections in persons with recent travel to affected areas (NEA, September 2026).
• Status: No chikungunya clusters. Majority of infections in persons with recent travel to affected areas (NEA, September 2026).
ZIKA:
• 2026 Year-to-Date: 8 laboratory-confirmed cases as of 26 August 2026
• Status: No new cases reported since 27 August 2026; no active cluster as of 2 September 2026.
• 2026 Year-to-Date: 8 laboratory-confirmed cases as of 26 August 2026
• Status: No new cases reported since 27 August 2026; no active cluster as of 2 September 2026.
Public Health Strength: Intensified vector control at clusters; Project Wolbachia and community BLOCK/SAW measures continue.
Data Verification Sources:
- National Environment Agency (NEA) dengue and Zika pages (September 2026)
- Communicable Diseases Agency (CDA) Weekly Infectious Diseases Bulletin
- WHO WPRO Dengue Situation Update 751 (serotype data)
SRI LANKA
Last Updated: September 2026
DENGUE - MAJOR OUTBREAK:
• 2026 Year-to-Date: 98,249 cases and 74 deaths as of 16 September 2026 midnight (CFR 0.076%)
• Monthly: January 7,866; February 5,721; March 6,013; April 5,651; May 8,590; June 21,533; July 29,964 (peak); August 10,155; September 2,758 (partial to 16 Sep)
• Geography: Western Province 52.7% of cases (Gampaha 20,856; Colombo 19,376). 35 high-risk MOH areas in week 36
• Status: Past the July peak but still far above 2025. NDCU warns northeast monsoon rains could drive a renewed rise; daily cases had previously reached 1,200–1,300.
• 2026 Year-to-Date: 98,249 cases and 74 deaths as of 16 September 2026 midnight (CFR 0.076%)
• Monthly: January 7,866; February 5,721; March 6,013; April 5,651; May 8,590; June 21,533; July 29,964 (peak); August 10,155; September 2,758 (partial to 16 Sep)
• Geography: Western Province 52.7% of cases (Gampaha 20,856; Colombo 19,376). 35 high-risk MOH areas in week 36
• Status: Past the July peak but still far above 2025. NDCU warns northeast monsoon rains could drive a renewed rise; daily cases had previously reached 1,200–1,300.
CHIKUNGUNYA:
• Status: Surveillance active; no large 2026 outbreak total published.
• Status: Surveillance active; no large 2026 outbreak total published.
Data Verification Sources:
- Sri Lanka National Dengue Control Unit / NaDSys (16 September 2026)
- The Morning (17 September 2026)
- WHO South-East Asia Region (SEARO)
THAILAND
Last Updated: September 2026
DENGUE:
• 2026 Year-to-Date: 21,620 cases and 31 deaths from 1 January to 19 August 2026 (Department of Disease Control)
• Bangkok: 1,785 cases and 4 deaths
• Status: Below 2025 and below the 2026 forecast, but still rising during the rainy season. CDC lists Thailand as elevated chikungunya risk for travellers.
• 2026 Year-to-Date: 21,620 cases and 31 deaths from 1 January to 19 August 2026 (Department of Disease Control)
• Bangkok: 1,785 cases and 4 deaths
• Status: Below 2025 and below the 2026 forecast, but still rising during the rainy season. CDC lists Thailand as elevated chikungunya risk for travellers.
ZIKA:
• Status: No large 2026 outbreak published. Thailand reported 423 Zika cases in 2024 and 245 in 2025 (WHO).
• Status: No large 2026 outbreak published. Thailand reported 423 Zika cases in 2024 and 245 in 2025 (WHO).
Data Verification Sources:
- Thailand Department of Disease Control (DDC), 19 August 2026
- WHO SEARO Epidemiological Bulletin
- WHO Zika epidemiology update (May 2026)
VIETNAM
Last Updated: September 2026
DENGUE:
• 2026 Year-to-Date: 73,828 cases and 9 deaths from January to July 2026 (WHO WPRO, 20 August 2026)
• July 2026: 15,940 cases and 1 death, an 18.5% increase from the previous month
• Trend: 1.3-fold increase versus the same period in 2025
• Status: Among countries with over 70,000 cases so far in 2026 (Hong Kong CHP, 11 September).
• 2026 Year-to-Date: 73,828 cases and 9 deaths from January to July 2026 (WHO WPRO, 20 August 2026)
• July 2026: 15,940 cases and 1 death, an 18.5% increase from the previous month
• Trend: 1.3-fold increase versus the same period in 2025
• Status: Among countries with over 70,000 cases so far in 2026 (Hong Kong CHP, 11 September).
CHIKUNGUNYA:
• Status: Under surveillance; no large 2026 national outbreak total published.
• Status: Under surveillance; no large 2026 national outbreak total published.
Data Verification Sources:
- WHO WPRO Dengue Situation Update 751 (6 August 2026)
- Hong Kong CHP (11 September 2026)
- Vietnam Ministry of Health / WHO Country Office
ASIA-PACIFIC COUNTRY DENGUE BURDEN SUMMARY (JAN–SEP 2026)
Figures use the latest available national or WHO total for each country. Cut-off dates differ, so the regional total is indicative only.
| Country | Reported Dengue Cases (2026) | Deaths | Latest Data |
|---|---|---|---|
| Philippines | 138,538 | 510 | 5 Sep 2026 (deaths to 29 Aug) |
| Sri Lanka | 98,249 | 74 | 16 Sep 2026 |
| Indonesia | 75,991 | 203 | 20 Aug 2026 (deaths to July) |
| Vietnam | 73,828 | 9 | July 2026 |
| Malaysia | 65,979 | 62 | EW 35 / 9 Sep 2026 |
| Bangladesh | 58,400 | 176 | 17 Sep 2026 |
| Cambodia | 54,697 | 58 | 20 Aug 2026 (deaths to 26 Jul) |
| India | 33,060 | — | July 2026 |
| Thailand | 21,620 | 31 | 19 Aug 2026 |
| Nepal | 5,119 | 3 | 24 Aug 2026 |
| Laos | 3,574 | 0 | 20 Aug 2026 |
| Maldives | 2,969 | — | May 2026 |
| Singapore | 2,337 | 2 | EW 36 / 12 Sep 2026 (deaths H1) |
| China (Guangdong local) | 431 | — | 31 Aug 2026 |
| ASIA-PACIFIC TOTAL | 634,792+ | 1,128+ | Mixed cut-offs, Sep 2026 |
Latest News & Media Coverage
Most recent updates from global health organizations and news sources
Table displays latest media and official releases for August–September 2026. For complete archive, see the News & Events page.