With dengue on the rise, last year's peak of cases has already been surpassed three times in 2024 | Dengue fever

You Dengue cases in Brazil already exceed those recorded at the peak of the epidemic in 2023. According to Ministry of Health data, three weeks of 2024 saw case numbers higher than the peak week last year.

Ministry data show that epidemic weeks 4 (January 21 to 27), 5 (January 28 to February 3) and 6 (February 4 to 10) More than 130,000 cases of dengue fever were recorded. At the peak of 2023, 111,840 probable cases were observed.

In 2023, the peak of cases was recorded in epidemiological week 15, from April 9 to 15. Last year was the second year with the highest number of possible cases since 2010. 1,658,816 cases were recorded. (See historical series below)

According to the epidemiological bulletin issued on Tuesday (20), Brazil recorded 688,461 probable cases of dengue fever. the number is Higher than the total recorded in 2017, 2018 and 2021. Compared to the same period of the previous year, high 315%.

The bulletin is also presented Areas with the highest infection rates of dengue fever in the country. According to the data, Midwest It is the region that leads the ranking, followed by southeast.

Among the Midwestern states, Federal District It is what matters A greater number of possible cases, with 80979 records. Goiás ranks second, with 42,407 cases.

In the southeast, Minas Gerais It is the country that Leads the number of possible cases, with more than 230 thousand cases. This value is more than double what was recorded by São Paulo, the second state in the region in terms of the number of cases.

The Northeast is the region of the country with the lowest cases of dengue.

Segmentation by age group

Ministry of Health data shows that dengue infection is similar across all age groups. People in between 20 and 29 years old they are who Recording a higher rate of infection with the disease. But the infection rate is slightly higher than that recorded in other age groups.

Regarding serious cases of the disease, the bulletin explained this The elderly are the group most at risk of contracting the severe form of dengue fever. The highest incidence of serious cases is concentrated in the age group of 80 years and above, followed by the age group of 70 to 79 years.

Types of dengue fever in Brazil

Dengue fever Serotype 1 is most frequently found in BrazilIt is registered in all states. Subsequently, serotype 2 was observed in 24 states and the Federal District.

There is simultaneous circulation of the four dengue serotypes in the national territory, but only the state of Minas Gerais has so far recorded the presence of all serotypes operating simultaneously.

🦟The virus exists Four serotypes Different types: DENV-1, DENV-2, DENV-3, DENV-4 — all of which can cause different forms of the disease.

A person can even get dengue fever Four times in your lifetime. This is because it can be infected with four different serotypes of the virus. Once she is exposed to a particular serotype, after transmission, she has immunity to that specific serotype.

Dengue cases – a historical series

• 2017 – 239,389
• 2018 – 262,594
• 2021 – 531,922
• 2014 – 589,107
• 2012 – 589,591
• 2011 – 739370
• 2020 – 948,533
• 2010 – 1,011,548
• 2022 – 1,420,259
• 2013 – 1,454,871
• 2016 – 1,483,623
• 2019 – 1,545,462
• 2023 – 1,658,816
• 2015 – 1,688,688