# Brazil dengue & chikungunya control, mixed 2026 trends

> Live situation record from CLSTR: https://clstr.news/situations/brazil-launches-a-wave-of-publichealth-and-welfare-campaigns-across-several-states-in-aprilmay-2026
> Updated: 2026-09-09T09:03:00.000Z. Sources: 243. Developments: 54.

Through early September 2026, Brazil’s public-health system continued intensified efforts to combat arboviruses, though local implementation faces logistical and environmental hurdles. In Votuporanga, São Paulo, officials reported that between January and August 19, over 67% of targeted properties were either closed or residents refused entry, prompting teams to attempt inspections during weekends and alternative hours. Meanwhile, in Ilhéus, health authorities intensified insecticide applications via backpack sprayers in the Hernani Sá and Banco da Vitória neighborhoods following confirmed chikungunya cases.

In the state of São Paulo, nineteen municipalities within the São José do Rio Preto regional health department have reached epidemic status, defined by incidence rates exceeding 300 cases per 100,000 inhabitants. While the Greater São Paulo area holds the highest absolute number of cases, the highest proportional risk is concentrated in the northwest, including Araçatuba, Presidente Prudente, and São José do Rio Preto. As of early September, the state has recorded over 58,000 confirmed cases and 41 deaths, a notable decrease from previous years.

Authorities are monitoring El Niño, as high temperatures and irregular rainfall facilitate mosquito breeding. Vaccination efforts for adolescents aged 10 to 14 using the Qdenga vaccine continue, while the Butantan-DV vaccine remains suspended pending investigations into adverse reactions. 

Previous regional efforts included large-scale house visits in Campo Grande, mosquito egg identification in Três Lagoas, and managing divergent trends in Campinas and Sorriso.

## Claims

- Campo Grande started a week‑long mobilization against Aedes aegypti on Monday, March 3. (corroborated by 3 sources)
- The campaign will involve visiting more than 17,000 homes by Saturday, March 8. (corroborated by 3 sources)
- Agents will perform environmental management, insecticide spraying (fumacê), educational activities, and use the LIRAa tool. (corroborated by 3 sources)
- Up to epidemiological week 29 of 2026, Campo Grande recorded 1,364 dengue notifications with no severe cases or deaths. (corroborated by 3 sources)
- During the same period, one Zika case and 37 chikungunya cases were confirmed, also with no deaths. (corroborated by 3 sources)
- Rubens Bitancourt, manager of vector disease control at Sesau, said LIRAa helps identify high‑infestation areas. (corroborated by 3 sources)
- Fernanda Veríssimo, an endemic agent, highlighted health education as a key component of the campaign. (corroborated by 3 sources)
- The LIRAa tool provides rapid index surveys to target mosquito control interventions. (corroborated by 3 sources)
- Acre reported 1,838 probable dengue cases in 2026, of which 1,115 were confirmed and zero deaths. (corroborated by 2 sources)
- Acre confirmed 13 meningitis cases in 2026, a 35% decline from 2025, with one death. (single source)
- Divinópolis recorded 2,076 confirmed dengue cases in 2026, four deaths and one death under investigation. (single source)
- Amazonas recorded 22,897 malaria cases Jan‑Jun 2026, a 17.9% drop from 2025, with 44.12% of cases in indigenous areas. (single source)

## Timeline

### 2026-09-09: Dengue epidemic affects 19 municipalities in São Paulo

Nineteen municipalities in São Paulo's northwest region are facing dengue epidemics, with high incidence rates in Araçatuba, Presidente Prudente, and São José do Rio Preto despite a state-wide decline in cases.

4 sources. https://clstr.news/cluster/dengue-epidemic-affects-19-municipalities-in-so-paulo

### 2026-09-02: Brazilian municipalities intensify dengue and arbovirus control measures

Brazilian cities Votuporanga and Ilhéus are ramping up dengue and chikungunya control efforts through insecticide spraying and mosquito breeding site elimination.

3 sources. https://clstr.news/cluster/brazilian-municipalities-intensify-dengue-and-arbovirus-control-measures

### 2026-08-24: Sorriso reports dengue and chikungunya cases amid mosquito surveillance

Sorriso, Brazil, reports 64 dengue and 25 chikungunya cases this year, with surveillance identifying high-risk neighborhoods and a 43% positive rate for Aedes aegypti mosquito eggs in recent trap samples.

2 sources. https://clstr.news/cluster/sorriso-reports-dengue-and-chikungunya-cases-amid-mosquito-surveillance

### 2026-08-13: Brazil municipalities intensify dengue control and vaccination campaigns

Brazilian municipalities are ramping up health measures, including dengue mosquito control in Campinas and Cuiabá, and expanding influenza vaccination access in Cuiabá, Rondonópolis, and Primavera do Leste.

16 sources. https://clstr.news/cluster/cuiab-reduces-aedes-aegypti-risk-and-expands-influenza-vaccination

### 2026-08-07: Dourados authorities launch preventive measures against Chikungunya

Health authorities in Dourados, Brazil, are implementing cleaning and chemical control measures to combat Chikungunya, while new technologies like drones aim to optimize dengue prevention efforts.

3 sources. https://clstr.news/cluster/dourados-authorities-launch-preventive-measures-against-chikungunya

### 2026-08-04: Campo Grande launches citywide dengue control campaign, inspecting 17,000 homes

Campo Grande began a week‑long dengue fight on March 3, sending agents to over 17,000 homes, using LIRAa surveys, insecticide spraying and education; 1,364 dengue cases reported with no deaths.

6 sources. https://clstr.news/cluster/campo-grande-launches-citywide-dengue-control-campaign-inspecting-17000-homes

### 2026-07-27: Brazil reports mixed 2026 trends in dengue, malaria and other diseases

Brazil's 2026 disease surveillance shows a meningitis decline in Acre, rising dengue in several states, a malaria drop in Amazonas, record chikungunya deaths in Mato Grosso do Sul, and heightened hepatitis and‑

12 sources. https://clstr.news/cluster/brazil-registers-dengue-cases-in-acre-and-28-chikungunya-deaths-in-mato-grosso-do-sul

### 2026-07-16: Nova Iguaçu expands dengue control with motorcycle‑mounted fogger

Nova Iguaçu deployed a motorcycle‑mounted fogger on July 15, 2026 to spray insecticide in hard‑to‑reach areas, boosting its ongoing dengue‑control program.

19 sources. https://clstr.news/cluster/nova-iguau-expands-dengue-control-using-motorized-fogging-in-hardtoreach-areas

### 2026-07-14: Brazilian cities intensify mosquito control to curb dengue and chikungunya

Brazilian cities ramp up mosquito control: Nova Iguaçu uses motofog, Rio de Janeiro inspects 16 neighborhoods, Varginha educates on tick disease, Campo Grande fumigates three districts, and Dourados sees a drop

7 sources. https://clstr.news/cluster/mato-grosso-do-sul-ramps-up-aedes-control-as-chikungunya-cases-fall

### 2026-07-13: Dengue cases rise sharply in Brazil's Ceará and Acre states

Brazil's Ceará logged over 6,100 dengue cases and Acre confirmed 993 cases, 15 severe and two deaths under investigation, leading to heightened prevention and monitoring.

3 sources. https://clstr.news/cluster/dengue-cases-rise-sharply-in-brazils-cear-and-acre-states

### 2026-07-10: Campo Grande launches fogging operation in four neighborhoods to curb Aedes mosquitoes

Campo Grande will fog four neighborhoods on 10 May to fight Aedes mosquitoes, while health officials hold a training workshop to prepare for summer dengue and chikungunya transmission.

7 sources. https://clstr.news/cluster/campo-grande-sprays-fumac-in-four-neighborhoods-against-aedes-aegypti

### 2026-07-10: Brazil records dengue surge with deaths across Paraíba, Acre and Mato Grosso in early 2026

Brazil's Paraíba saw over 4,400 arbovirus cases and six dengue deaths, Acre reports two suspected dengue deaths, and Cuiabá logged 568 dengue cases with one death in early 2026.

4 sources. https://clstr.news/cluster/dengue-deaths-rise-in-brazils-paraba-and-acre-states

### 2026-07-08: Itajaí and Tubarão in Brazil roll out new dengue‑prevention programs

Itajaí begins Wolbachia mosquito releases and Tubarão applies long‑lasting insecticide as Brazil steps up dengue prevention.

2 sources. https://clstr.news/cluster/itaja-and-tubaro-in-brazil-roll-out-new-dengueprevention-programs

### 2026-07-06: Campo Grande Holds Second Arboviruses Workshop to Strengthen Dengue, Chikungunya and Zika Response

Campo Grande’s July 7 health workshop trained staff on dengue, chikungunya and Zika, featuring Fiocruz and Ministry experts to boost surveillance and vector control before the summer peak.

16 sources. https://clstr.news/cluster/campo-grande-hosts-second-arboviruses-workshop-to-boost-dengue-chikungunya-and-zika-response

### 2026-07-06: Brazil Health Ministry probes safety of Butantan dengue vaccine

Brazil's health ministry and Anvisa are investigating 42 severe reactions to the Butantan-DV dengue vaccine, suspended since June 8, to decide if it can resume with possible restrictions, while Qdenga remains a

2 sources. https://clstr.news/cluster/brazil-health-ministry-probes-safety-of-butantan-dengue-vaccine

### 2026-07-04: Brazilian municipalities intensify dengue mosquito control measures

Health agencies in Brazil’s Federal District, Guarulhos and Cuiabá expanded mosquito‑control operations, inspecting homes, applying larvicides and promoting vaccination as dengue cases fall.

4 sources. https://clstr.news/cluster/brazils-federal-district-and-cuiab-intensify-dengue-surveillance-and-aedes-aegypti-control

### 2026-07-03: Dourados reports 17 chikungunya deaths, launches flu vaccination day

Dourados, Brazil, records 17 chikungunya deaths amid ongoing infections and hosts a free flu vaccination day to boost community immunisation.

3 sources. https://clstr.news/cluster/dourados-reports-17-chikungunya-deaths-launches-flu-vaccination-day

### 2026-06-29: Brazil records dengue deaths in Paraíba while chikungunya cases drop in Dourados

Brazil reports dengue deaths in Paraíba, a sharp decline in chikungunya cases in Dourados, and low arbovirus numbers in Sorriso, urging continued mosquito‑control measures.

5 sources. https://clstr.news/cluster/paraba-health-officials-investigate-dengue-deaths-of-two-children

### 2026-06-27: Marília municipality resumes dengue‑prevention actions in north district

Marília resumed dengue‑prevention work in its north zone, deploying 25 agents to eliminate mosquito breeding sites after a rain delay; 79 cases remain non‑severe.

2 sources. https://clstr.news/cluster/marlia-municipality-launches-animal-adoption-fair-and-dengue-control-actions

### 2026-06-26: Brazilian cities São José and Anápolis begin Wolbachia mosquito releases to curb dengue

São José and Anápolis in Brazil are rolling out the Wolbachia mosquito technique, targeting over half a million residents to reduce dengue, Zika and chikungunya transmission.

2 sources. https://clstr.news/cluster/brazilian-cities-so-jos-and-anpolis-begin-wolbachia-mosquito-releases-to-curb-dengue

### 2026-06-23: Brazil Deploys Drones to Map and Treat Dengue Breeding Sites in Federal District

Drones equipped with AI mapping and larvicide drops are being used across Brazil's Federal District to locate and treat dengue mosquito breeding sites, targeting over 18,000 areas in the coming year.

3 sources. https://clstr.news/cluster/brazil-deploys-drones-to-map-and-treat-dengue-breeding-sites-in-federal-district

### 2026-06-23: Brazil resumes dengue vaccine campaign in João Pessoa as Minas reports no severe side effects

Brazil’s João Pessoa restarts dengue vaccination after a holiday break, while Minas Gerais reports no serious side effects from the suspended Butantan vaccine, as authorities investigate nationwide cases.

2 sources. https://clstr.news/cluster/brazil-resumes-dengue-vaccine-campaign-in-joo-pessoa-as-minas-reports-no-severe-side-effects

### 2026-06-23: Brazilian cities deploy drones and cleaning projects to boost public health and infrastructure

Brazilian municipalities launch drone‑based dengue control in the Federal District and intensive cleaning, road and safety upgrades in Várzea Grande and Varginha.

4 sources. https://clstr.news/cluster/brazil-ramps-up-dengue-fight-using-drones-in-the-capital-and-community-cleanups-in-minas-gerais

### 2026-06-23: Dengue Cases Rise in Philippines While Declining in Brazil in 2026

Dengue cases rose 50 % in Benguet, Philippines (54 cases, no deaths) while falling 99 % in Sorocaba, Brazil (62 cases, no deaths) in early 2026, reflecting differing local control efforts.

2 sources. https://clstr.news/cluster/dengue-cases-rise-in-philippines-while-declining-in-brazil-in-2026

### 2026-06-20: Brazil's Federal District health officials warn of dengue surge as atypical rains hit

Brazil's Federal District health agency warns that atypical rains may trigger a dengue rise, urging weekly inspections, container removal, and continued community campaigns.

3 sources. https://clstr.news/cluster/brazils-federal-district-health-officials-warn-of-dengue-surge-as-atypical-rains-hit

### 2026-06-18: Cuiabá and Dourados intensify mosquito control, reducing dengue and chikungunya cases

Cuiabá’s health teams inspected over half a million homes, cutting dengue and chikungunya cases, while Dourados maintains larvicide stations and inspects properties to fight Aedes aegypti.

4 sources. https://clstr.news/cluster/cuiab-and-dourados-report-lower-dengue-cases-and-expand-mosquitotrap-program

### 2026-06-18: Dourados extends health emergency amid chikungunya outbreak

Dourados, Brazil, extended its health emergency for 90 days as chikungunya continues, with 5,200+ cases, 14 deaths and 20 hospitalizations.

3 sources. https://clstr.news/cluster/dourados-extends-health-emergency-amid-chikungunya-outbreak

### 2026-06-17: Brazilian cities intensify fumacê spraying to curb dengue

Campo Grande and Paraíso do Tocantins in Brazil deployed intensive fumacê ULV spraying across multiple neighborhoods to reduce adult Aedes aegypti and curb dengue, zika and chikungunya, urging residents to keep

3 sources. https://clstr.news/cluster/brazilian-cities-intensify-fumac-spraying-to-curb-dengue

### 2026-06-15: Minas Gerais government begins Wolbachia mosquito releases in Mario Campos, Brazil

The Minas Gerais government launched Wolbachia‑infected mosquito releases in Mario Campos on 10 June to reduce dengue, Zika and chikungunya, expanding a health project covering 22 municipalities and funded by

2 sources. https://clstr.news/cluster/minas-gerais-government-begins-wolbachia-mosquito-releases-in-mario-campos-brazil

### 2026-06-14: Brazilian municipalities expand school environmental education and vector‑control campaigns

Ribeirão Pires held an environmental‑education event for 353 pupils, while Belford Roxo ran a vector‑control campaign vaccinating hundreds of pets and fumigating homes.

3 sources. https://clstr.news/cluster/brazilian-municipalities-expand-school-environmental-education-and-vectorcontrol-campaigns

### 2026-06-14: Brazil's Anvisa forms expert panel to assess safety of Butantan dengue vaccine

Anvisa created a specialist group on 16 June 2026 to review safety data on the Butantan dengue vaccine after 42 adverse events, including two deaths, were reported among 500,000 recipients.

13 sources. https://clstr.news/cluster/brazils-anvisa-forms-panel-to-review-dengue-vaccine-safety

### 2026-06-12: Brazilian cities expand free vaccination, warn on dengue vaccine uptake

Barra de São Francisco provides free vaccines for all ages, while Campo Grande stresses safety of the Qdenga dengue shot amid low coverage and a suspended Butantan vaccine.

2 sources. https://clstr.news/cluster/brazilian-cities-expand-free-vaccination-warn-on-dengue-vaccine-uptake

### 2026-06-12: Brazil halts Butantan dengue vaccine following severe adverse events

Brazil's health ministry temporarily suspended the Butantan dengue vaccine after 42 severe reactions, including two deaths, urging recent recipients to monitor symptoms, while the Qdenga vaccine for children is

4 sources. https://clstr.news/cluster/brazil-halts-butantan-dengue-vaccine-following-severe-adverse-events

### 2026-06-11: Brazilian towns Tupã and Apucarana cut Aedes aegypti infestation

Tupã and Apucarana report major drops in Aedes aegypti egg counts and dengue cases after intensive ovitrap monitoring and community efforts.

2 sources. https://clstr.news/cluster/brazilian-towns-tup-and-apucarana-cut-aedes-aegypti-infestation

### 2026-06-11: Brazil's Butantan continues dengue vaccine trial in elderly

Butantan will maintain its dengue vaccine trial for seniors in Brazil, assessing safety and immune response after the vaccine's suspension following severe reactions and two deaths.

3 sources. https://clstr.news/cluster/brazils-butantan-continues-dengue-vaccine-trial-in-elderly

### 2026-06-10: Mogi Guaçu and Mario Campos in Minas Gerais launch new mosquito control programs

Mogi Guaçu starts ovitrampa monitoring while Mario Campos releases Wolbachia‑infected mosquitoes, both aiming to curb dengue, Zika and chikungunya in Minas Gerais.

2 sources. https://clstr.news/cluster/mogi-guau-and-mario-campos-in-minas-gerais-launch-new-mosquito-control-programs

### 2026-06-10: Brazil suspends Butantan dengue vaccine after 42 severe adverse events

Brazil temporarily halts the Butantan dengue vaccine after 42 serious adverse events, urging recent recipients to watch for symptoms while investigations continue.

2 sources. https://clstr.news/cluster/brazil-suspends-butantan-dengue-vaccine-after-42-severe-adverse-events

### 2026-06-10: Brazilian municipal health agencies roll out training and street actions to curb Aedes aegypti

Brazilian municipalities boost Aedes aegypti control through agent safety training in Primavera do Leste/Campo Verde and Rio de Janeiro's street‑inspection campaign.

2 sources. https://clstr.news/cluster/brazilian-municipal-health-agencies-roll-out-training-and-street-actions-to-curb-aedes-aegypti

### 2026-06-09: Brazil keeps dengue vaccine Qdenga for children as Butantan dose suspended

Brazil suspends the Butantan dengue vaccine for health workers after adverse events, but continues child immunisation with Takeda’s Qdenga nationwide, including São José, Schroeder and Goiás.

4 sources. https://clstr.news/cluster/gois-suspends-butantan-dengue-vaccine-while-children-continue-receiving-takedas-qdenga

### 2026-06-09: Brazil Suspends Dengue Vaccine After Severe Adverse Events and Two Deaths

Brazil temporarily stops the Instituto Butantan dengue vaccine after 42 severe adverse events and two possible vaccine‑related deaths; investigations and active monitoring are underway.

3 sources. https://clstr.news/cluster/brazil-suspends-dengue-vaccine-after-severe-adverse-events-and-two-deaths

### 2026-06-08: Brazil suspends dengue vaccine rollout after three serious cases among health workers

Brazil halted its dengue vaccine after three severe cases—including two deaths—among health workers, part of 42 serious reactions from ~500,000 doses, pending investigation.

2 sources. https://clstr.news/cluster/brazil-suspends-dengue-vaccine-rollout-after-three-serious-cases-among-health-workers

### 2026-06-08: Brazil suspends Butantan dengue vaccine amid severe adverse events

Brazil halts the Butantan dengue vaccine after 42 severe adverse events, including two deaths, while the institute continues an elderly safety study.

2 sources. https://clstr.news/cluster/brazil-suspends-butantan-dengue-vaccine-amid-severe-adverse-events

### 2026-06-08: Brazil suspends dengue vaccine rollout after three severe adverse cases

Brazil pauses its dengue vaccine after two deaths and a serious case among health workers, launching a joint investigation into the three severe reactions.

2 sources. https://clstr.news/cluster/brazil-suspends-dengue-vaccine-rollout-after-three-severe-adverse-cases

### 2026-06-08: Natal, Brazil Suspends Dengue Vaccine After Fatal Cases and Requires Pharmacy Notices for Free SUS Medicines

Brazil suspends its dengue vaccine after two deaths and other severe cases, while Natal mandates pharmacy notices about free SUS medicines with fines for non‑compliance.

2 sources. https://clstr.news/cluster/natal-brazil-suspends-dengue-vaccine-after-fatal-cases-and-requires-pharmacy-notices-for-free-sus-me

### 2026-06-08: Brazil suspends Butantan dengue vaccine after two deaths and 42 serious cases

Brazil has halted the Butantan dengue vaccine after 42 severe reactions, including two deaths, were reported among about 500,000 doses; investigations are underway and recent vaccinees are advised to seek care‑

86 sources. https://clstr.news/cluster/brazil-suspends-butantan-dengue-vaccine-after-two-deaths

### 2026-06-02: Brazilian municipalities launch dengue control and aeromedical emergency initiatives

Brazilian cities boost health measures: Varginha targets dengue breeding sites with fines and education, while João Pessoa adds a PRF helicopter and new motorbikes to speed emergency medical response.

3 sources. https://clstr.news/cluster/brazilian-municipalities-launch-dengue-control-and-aeromedical-emergency-initiatives

### 2026-05-30: Dengue outcomes diverge in São Paulo state, Brazil, in 2026

Santo Antônio de Posse cut dengue cases by 99.4% in early 2026, while Taubaté recorded its sixth dengue death, raising the regional death count to ten amid 7,516 cases.

3 sources. https://clstr.news/cluster/dengue-outcomes-diverge-in-so-paulo-state-brazil-in-2026

### 2026-05-26: Minas Gerais deploys drones to map 497,000 hectares in fight against Aedes aegypti

Minas Gerais health agency used drones to map 497,000 hectares, identifying 334,000 points, investing R$30 million, and eliminating over 5,200 Aedes aegypti breeding sites.

2 sources. https://clstr.news/cluster/minas-gerais-deploys-drones-to-map-497000-hectares-in-fight-against-aedes-aegypti

### 2026-05-26: Fortaleza and Dourados ramp up Aedes aegypti control with larvicide stations

Fortaleza is installing 11,740 larvicide stations city‑wide, while Dourados inspected nearly 6,000 homes, found 64 Aedes breeding sites and installed 1,008 stations, boosting Brazil's fight against dengue, Zika

6 sources. https://clstr.news/cluster/fortaleza-and-dourados-ramp-up-aedes-aegypti-control-with-larvicide-stations

### 2026-05-22: Boa Vista launches intensive Aedes aegypti mutirão to curb rising dengue cases

Boa Vista, Brazil, started a mutirão on 23 June targeting Aedes aegypti after a 13 % infestation in 13 de Setembro, amid a 36 % rise in dengue cases, with health and defence agencies urging household cleanup.

2 sources. https://clstr.news/cluster/boa-vista-launches-intensive-aedes-aegypti-mutiro-to-curb-rising-dengue-cases

### 2026-05-19: Ipatinga and Ilhéus see sharp drop in Aedes aegypti infestation

Ipatinga and Ilhéus reduced Aedes aegypti infestation, but remain on alert.

3 sources. https://clstr.news/cluster/ipatinga-and-ilhus-see-sharp-drop-in-aedes-aegypti-infestation

### 2026-05-13: Brazil reports surge in dengue cases and deaths in Minas Gerais and Paraíba

Dengue cases rise sharply in Brazil’s Minas Gerais and Paraíba, with deaths confirmed in both states.

5 sources. https://clstr.news/cluster/brazil-reports-surge-in-dengue-cases-and-deaths-in-minas-gerais-and-paraba

### 2026-04-23: Dengue epidemic declared in Taubaté; Minas Gerais cases rise; Samu dismantling debate in Mato Grosso

Taubaté declares dengue epidemic as Minas Gerais cases rise; Samu dismantling debate surfaces in Mato Grosso.

3 sources. https://clstr.news/cluster/dengue-epidemic-declared-in-taubat-minas-gerais-cases-rise-samu-dismantling-debate-in-mato-grosso

### 2026-04-18: Dia D vaccination campaigns underway in Tocantins as dengue cases rise; Cuiabá to host influenza drive

Dia D campaigns tackle dengue in Tocantins and influenza in Cuiabá, with 17 municipalities and 72 health units involved.

4 sources. https://clstr.news/cluster/dia-d-vaccination-campaigns-underway-in-tocantins-as-dengue-cases-rise-cuiab-to-host-influenza-drive

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Cite as: Brazil dengue & chikungunya control, mixed 2026 trends. CLSTR, https://clstr.news/situations/brazil-launches-a-wave-of-publichealth-and-welfare-campaigns-across-several-states-in-aprilmay-2026