LIRAa points to a high risk of contamination by dengue fever, zika and chikungunya in JF

The incidence of outbreaks of the Aedes aegypti mosquito, responsible for diseases such as dengue fever, The chikungunya and zika virus is considered “high risk” in Juiz de Fora. This is the result of the second rapid index survey on Aedes aegypti (LIRAa) of 2022, published by the Town Hall this Thursday morning (19) after a survey carried out at the end of April. According to the executive, the infestation index reached a score of 4.4, according to the classification of the Ministry of Health, which takes into account the risk of disease in the population by mosquito-borne diseases and the number of positive recipients for the larva. in inspected properties.

Of the 16 regions surveyed, only one is at low risk. In the remaining regions, eight are medium risk and seven are high risk. The locations have not yet been revealed. No previous results, harvested in February and revealed by the PJF in March, the score was 2.9, considered an alert situation. Below 1, the risk is low.

Alongside LIRAa, suspected cases of diseases transmitted by the Aedes aegypti mosquito are beginning to attract the attention of authorities. In the case of dengue fever, there have been 59 notifications in the past two weeks, according to the epidemiological bulletin on urban arboviruses published by the State Department of Health (SES-MG) this Wednesday (18). To give you an idea, last week the state had confirmed 37 probable cases of dengue fever in Juiz de Fora, which shows an upward trend in the city. In addition, nine suspected chikungunya cases are under investigation.

According to the head of the Department of Epidemiological Surveillance, Louise Cândido, the city is in a period of alert, since the increase in cases is already observed in other regions of the country and in Juiz de Fora will not be different. According to the latest bulletin from the Ministry of Health, dengue fever records have increased by about 40% in Brazil in the last three weeks, there have been more than 757,000 probable cases, which exceeds the entire last year, when the country had 544,000 cases.

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The drought period contributes to the emergence of cases

The trend is for an increase in dengue cases after the rainy season, so that there is time for the vector mosquito to lay eggs, hatch and contact the host with the virus that transmits disease. “Between the end of April and the month of May, we already had an expectation of an increase in cases and we believe that now, after the rains, there will be more cases and we are working on vector control to prevent this increase from occurring. happen”. important,” says Louise.

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Based on the results of the first LIRAa, in February, the Communal Arbovirosis Contingency Plan was launched with the aim of redirecting public action according to each stage of the epidemic period. “We managed to keep the city between low and medium risk thanks to mobilization actions, the realization of LIRAa, the decentralization of agents who went to work in the highest risk areas. Thus, several stages of the plan have been made for this moment that we live in and as the number of cases advances, new measures are put in place.

Resistance to agent visits

Photo: PJF Archives/Disclosure

The partnership between public bodies and the population is essential in the fight against the disease, because, according to the head of the epidemiological surveillance service, most of the outbreaks identified are located inside homes. Thus, care and attention must be paid to the accumulation of water, especially in pots and bottles with stagnant water, as well as returnable dishes and bottles, in addition to abandoned or disused works, gutters and structures. These objects are the most suitable for storing water, according to LIRAa.

According to Louise, the department has found resistance from the population to let agents into homes, which prevents the inspection from being carried out and promotes the proliferation of mosquitoes. It should be mentioned that all Endemic Combat Agents wear the uniform of the Town Hall blouse and/or vest. Moreover, every 15 days, the cemeteries and the workshops are inspected, strategic points of accumulation of water.

The town hall also receives complaints from places with possible epidemics, through the MonitorAr appaccessible in any browser, in addition to platforms such as smartphones, tablets, laptops and computers.

The main symptoms of dengue fever, zika and chikungunia

According to infectious disease specialist Marcos Moura, the symptoms of dengue, zika and chikungunya are very similar and can even resemble a viral syndrome. However, what characterizes arboviruses is a sudden high fever associated with body aches, fatigue and malaise. “The intensity of these symptoms varies by disease, but normally chikungunya causes more intense joint pain and dengue fever causes more severe body pain, while zika is milder in terms of pain and fever. However, this What marks zika well are the reddish spots that appear on the body, called rashes,” explains the doctor.

The infectiologist specifies that if the patient notices any of these symptoms, it is necessary to consult a doctor for a preliminary diagnosis, since febrile diseases can also be bacterial infectious diseases, which are serious and can lead to dead. “In the case of dengue, there are signs of severity that the doctor can guide and diagnose early to avoid an unfavorable evolution of the disease”, explains Marcos, who emphasizes the importance of not practicing self-medication, since it can trigger complications and endanger the patient.

To prevent dengue, zika and chikungunya, it is essential to control the vector, which is the Aedes aegypti mosquito, so it is important to avoid the accumulation of stagnant water, in addition to placing mosquito nets and use repellents in areas that have a lot of incidence of mosquitoes.

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