Dengue situation worsens in SC and epidemic reaches 21 municipalities

The dengue situation has worsened in Santa Catarina. In seven days, the number of confirmed cases rose 72%, according to data from the weekly dengue bulletin. The number of municipalities that reached the level of dengue epidemic also rose from 16 to 21. Of these, 20 are located in the West region.

The situation is worrying and raises an alert, especially with the growth in the number of deaths. According to the weekly dengue bulletin issued by DIVE/SC (Directorate of Epidemiological Surveillance of Santa Catarina), of the eight deaths confirmed so far, six were in cities in the West.

Dengue combat teams work in Blumenau – Photo: Marcelo Martins/Blumenau City Hall/ND

The deaths were in Brusque, Caibi, two in Chapecó, Criciúma, Itá, Romelândia and Xanxerê. Another nine are under investigation, six of them in cities in western Santa Catarina.

The weekly dengue bulletin reported that the state has 25,971 outbreaks of Aedes Aegypti spread across 210 municipalities. In all, 125 cities are infested.

The number of confirmed cases is 9,422, of which 7,515 are indigenous and 71 are imported. Another 1,725 ​​cases are under investigation for LPI (Probable Site of Infection) and 111 are considered undetermined, as it was not possible to define the LPI.

Compared to the dengue bulletin released on April 1, the number of confirmed cases rose from 5,478 to 9,422. A 72% increase in seven days. Autochthonous cases grew by 80%, from 4,156 to 7,515. Imported cases increased by 18%, from 60 to 71.

Cities in epidemic

The 21 municipalities of Santa Catarina that reached the epidemic level were: Maravilha, Seara, Concórdia, Iporã do Oeste, Itá, Xanxerê, Abelardo Luz, Romelândia, Mondaí, Belmonte, Coronel Freitas, Guaraciaba, São José do Cedro, Caibi, Palmitos , Ascurra, Caxambu do Sul, Tunápolis, Flor do Sertão, Santa Helena and Peritiba

The director of DIVE / SC, João Augusto Brancher Fuck, spoke about the importance of maintaining care to avoid more deaths in Santa Catarina. “The state has seen an increase in the number of dengue cases in recent weeks. With this, it is essential to reinforce vector control measures and assistance to suspected patients who are looking for health services”.

Fuck pointed out that the largest number of cases is in the west of the state and, therefore, the SES (State Department of Health) was in the region in the last week talking with the municipalities and other bodies to align actions such as the creation of municipal rooms, as well as clinical management of patients to prevent more deaths from dengue in the state.

dengue mapMap shows cities infested by the Aedes Aegypti mosquito. – Photo: Playback/DIVE

Joinville has a 77% increase in cases

According to the Dengue Panel, Joinville has 662 confirmed cases of dengue until this Friday (8). The number is 77% higher than it was two days ago, when 374 cases were reported.

The neighborhood with the highest number of cases is Costa e Silva, with 267 people with the disease, that is, 40% of the total. Jardim Iririú, Iririú and Comasa also stand out with more than 60 cases each.

Regarding the outbreaks of the Aedes aegypti mosquito, 2,739 have already been registered in the city this year, most in the Aventureiro, Costa e Silva, Itaum and Floresta neighborhoods. In 2021, Joinville was the city with the most deaths from dengue in the entire state, with five deaths confirmed by the disease.

A death is investigated suspected of dengue in Joinville. If confirmed, it will be the first death from the disease in 2022 in the city. The death under investigation is a 65-year-old man and took place on April 3.

Blumenau investigates deaths

The dengue situation is closely monitored by the health authorities in Blumenau. Two deaths are investigated for suspected dengue. The information was confirmed to the report by Semus (Health Promotion Department) this Friday morning (8).

According to the Communications Office, the cases are under investigation. The ministry, however, decided not to provide information about the deaths or the age of the victims in order to preserve the families.

Until last Wednesday (6), the municipality had registered 1980 outbreaks of the Aedes Aegypti mosquito and 293 confirmed cases. Of these, 281 are autochthonous cases, that is, contracted in the city. In addition to the confirmed cases, another 874 are considered suspects and are awaiting test results.

DIVE/SC guides the elimination of the Aedes Aegypti mosquito to reduce the transmission of dengue – Photo: Getty Images/iStockphoto/NDDIVE/SC guides the elimination of the Aedes Aegypti mosquito to reduce the transmission of dengue – Photo: Getty Images/iStockphoto/ND

deaths from dengue

  • Brusque, 81 years old, male, autochthonous;
  • Caibi, 72 years old, male, autochthonous;
  • Chapecó, 86 years old, female, autochthonous;
  • Chapecó, 73 years old, male, autochthonous;
  • Criciúma, 40 years old, male, imported;
  • Itá, 72 years old, male, autochthonous;
  • Romelândia, 61 years old, male, autochthonous;
  • Xanxerê, 51 years old, male, autochthonous;

Investigation deaths

  • Ascurra (01);
  • Blumenau (01);
  • Chapeco (01);
  • Guaraciaba (01);
  • Joinville (01);
  • Wonder (01);
  • Palm hearts (01);
  • Afternoon (02);

understand the disease

Dengue is a febrile infectious disease caused by an arbovirus, being one of the main public health problems in the world. It is transmitted by the bite of an infected female Aedes aegypti mosquito.

Dengue virus infection can be asymptomatic or symptomatic. When symptomatic, it causes a systemic and dynamic disease with a wide clinical spectrum, ranging from milder forms to severe conditions, which can progress to death.

All four serotypes of the dengue virus circulating in the world cause the same symptoms, and it is not possible to distinguish them only by clinical presentation.

The term “hemorrhagic dengue” ceased to be used in 2014, when Brazil started to use the new classification of the disease, which takes into account that dengue is a unique, dynamic and systemic disease. For clinical and epidemiological purposes, the following classification is considered: dengue, dengue with warning signs and severe dengue.


Usually, the first manifestation of dengue is high fever of sudden onset, which lasts from 2 to 7 days, associated with headache, weakness, pain in the body, in the joints and in the back of the eyes.

Spots on the body are present in 50% of cases, and can affect the face, trunk, arms and legs. Loss of appetite, nausea and vomiting may also be present. With the decrease in fever, between the 3rd and 7th day of the onset of the disease, most patients recover gradually, with an improvement in the general condition and a return of appetite.

However, some patients can progress to the severe form of the disease, characterized by the appearance of alarm signs, which may indicate the patient’s clinical deterioration.

Zika and Chikungunya

The Aedes Aegypti mosquito also transmits two other diseases: Zika and Chikungunya. Of Zika, 40 notifications were made in the state. Of these, 30 cases were discarded and 10 suspected. From Chikungunya, there were 237 notifications. Two cases were confirmed imported, 159 discarded and 76 are under investigation.

Guidelines to prevent the proliferation of Aedes aegypti:

  • Avoid using dishes in potted plants. If using them, add sand to the edge;
  • Store bottles with the neck facing down;
  • Keep trash cans covered;
  • Leave the water tanks always sealed, without any opening, especially the water tanks;
  • Plants such as bromeliads should be avoided, as they accumulate water;
  • Treat pool water with chlorine and clean it once a week;
  • Keep drains closed and unclogged;
  • Brush the animals’ food and water pots at least once a week;
  • Remove the water accumulated on slabs;
  • Flush, at least once a week, in rarely used bathrooms;
  • Keep the toilet lid closed;
  • Avoid accumulating debris, as it can become a focus for the dengue mosquito;
  • Report the existence of possible outbreaks of Aedes aegypti to the Municipal Health Department;
  • If you have symptoms of dengue, chikungunya or zika virus, look for a health unit for care.

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