Data from Fundação Oswaldo Cruz (Fiocruz) and Fundação Getúlio Vargas (FGV) warn of an expansion in dengue cases in Brazil in 2022.
Information from InfoDengue, the institutions’ data storage system, shows that the southern region of the country will be the main area of attention this year.
According to the platform, the most critical state is Santa Catarina, which from early December to the second week of January this year, recorded 1,288 cases of dengue. Two cities in the state are classified as having an epidemic of the disease: the capital Florianópolis, and Joinville, a city in the metropolitan region with the highest GDP in the state.
“Major outbreaks of dengue occurred in the region of Londrina/PR, Sengés/PR and Joinville/SC, last year and previous years, which may indicate vector adaptation and climate change, a topic that needs to be further investigated.”, explains the company. Foundation.
Fiocruz also points out that in addition to the South of the country, currently, three other states and the Federal District have regions in a situation of attention due to the high incidence of the disease. They are: the northwest of São Paulo/SP, region between Goiânia/GO and Palmas/TO, passing through the Federal District/DF. (See image below.)
The state of São Paulo, in the last 45 days, recorded 12,786 cases of dengue, and has five cities in a situation of epidemic for the disease, the state with the largest number of municipalities in this situation. According to Fiocruz, in 2021, the state of São Paulo also had increased activity of dengue, in the northwest region, capital and Baixada Santista.
In Tocantins, there were 5,556 cases of the disease since the beginning of December, and the state has two cities in a situation of epidemic for the disease. The Federal District recorded 2,701 cases of dengue, 18 cases of Chikungunya, 4 cases of zika, and is in a state of attention for these diseases.
The rainy seasons together with the heat are favorable for the proliferation of the Aedes aegypti mosquito, which transmits the dengue, zika and chikungunya viruses. According to the coordinator of InfoDengue, Claudia Codeço, it is important to promote research projects in the area of entomology to study changes in the behavior of Aedes aegypti.
“The anticipation of the transmission period in some states causes concern and can lead to high incidences, if adequate vector control is not carried out”, says the researcher.
InfoDengue researchers also point to the pattern of dengue occurrence in the country in 2021, particularly in the western part of Brazil, from Acre to Mato Grosso, a fact that coincided with the high circulation of the virus in neighboring countries, such as Bolivia and Paraguay, emphasizing the importance of strong and articulated surveillance at the borders.
Reference: CNN Brasil