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Almost a thousand cities may have an outbreak of dengue, zika and chicungunha in the country, wary of government

The Ministry of Health has released a survey Tuesday that shows that nearly a thousand cities may have an outbreak of dengue, zika and chicungunha in the country. First A quick survey of 2019 Aedes aegypti infestation indices (LIRAa) shows that 994 municipalities had a high rate of infestation, with the risk of disease outbreaks. The data was collected from January to March this year.

The briefcase warns that the surveillance system of states and communities and the entire population should strengthen mosquito care. Aedes aegypti, a transmitter of these diseases, was monitored in all 2714 municipalities.

"The result of LIRAa confirms the increase in the prevalence of dengue cases across the country, which increased by 339.9% in the same period last year. These results show the need for further action to combat mosquito transmission, involving the population and all local and regional federal managers, ”says Wanderson Kleber, secretary of health surveillance at the Ministry of Health.

Kleber points out that "although the number of cases of disease has increased, the incidence rate for 2019 is within the expected period." The country is not yet in an epidemic situation, although there may be localized epidemics in some communities and states, "he said.

In addition to the endangered cities, the survey identified 2,160 municipalities on alert, with a soil attack rate of between 1% and 3.9% and 1,804 municipalities with satisfactory indices below 1%.

Cases by country

In 2019, until April 13, 451,685 probable dengue cases were registered in the country, an increase of 339.9% in the same period last year, with 102,681 cases. The incidence was 216.6% / 100,000. The number of deaths from the disease also increased from 186.3% from 66 to 123 deaths.

The increase in cases is explained by the Aedes General Coordinator of National Programs for the Control and Prevention of Malaria and Some of the Reasons:

– Since the end of last year, environmental conditions have contributed to the reproduction of vectors such as elevated temperatures and longer rainfall regimes. In addition, we have the return of the dengue 2 serotype, which was not predominantly identified in the samples, which increases the susceptibility of the population – says Rodrigo Said.

With regard to Minas Gerais, which has seen a significant increase in this year, it highlights the problem of circulating a virus that was not prevalent in the state and finds a susceptible population. In addition, the aforementioned favorable environmental scenario exists.

In connection with the zika, 3,085 cases were recorded, with 1.5 cases / 100 thousand cases. In 2018, 3,001 probable cases were registered in the same period. In 2019, Zika did not experience deaths.

There were also 24,120 Chicungunha cases in the country with 11.6 cases / 100,000 inhabitants. In 2018, 37,874 cases were recorded – a decrease of 36.3%. In 2019, Chicungunha did not confirm death.

Situation in cities

Five capitals have a satisfactory index: Boa Vista (RR), João Pessoa (PB), São Paulo (SP), Rio de Janeiro (RJ) and the Federal District. The capital Cuiabá (MT) is under threat. Another 16 capitals are on standby: Fortaleza (CE), Porto Velho (RO), Palmas (TO), Salvador (BA), Teresina (PI), Recife (PE), Belo Horizonte (PA), Macapa (AP) Manaus (AM), Maceió (AL), Aracaju (SE) and Goiânia (GO).

Florianópolis (SC) and Rio Branco (AC) did not send information.


It is an important tool for vector control. Based on the information collected, it is possible to identify a neighborhood where there is a concentration of mosquito foci and how they are. The goal is to make the survey better for the municipalities to plan mosquito fighting and control actions.

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