Epidemiology of hospitalizations for Influenza (flu) in Brazil between 2015 to 2019
INTRODUCTION: Influenza or influenza is an acute viral infection of the respiratory system, which has a global distribution and high transmissibility. Possible symptoms include: fever, runny nose, sore throat, cough, headache, myalgia and a feeling of indisposition. In general, the virus is transmitted by inhaling droplets from an infected person's cough or sneezing or by direct contact with the infected person's nasal secretions. The treatment consists of rest, drinking plenty of fluids and avoiding efforts, as well as taking painkillers, decongestants and, sometimes, antiviral medications. In addition, annual vaccination is the best way to prevent the flu. AIM: To determine the epidemiology of hospitalizations for influenza in Brazil, in the period from 2015 to 2019. MATERIAL AND METHODS: This is an epidemiological, quantitative and retrospective study with data collection at the Department of Informatics of the Unified Health System (SUS) - DATASUS. The research was carried out using Epidemiological and Morbidity information, in consultation with the SUS Hospitalization System (SIH/SUS) of the Ministry of Health of Brazil. The data available in the system were analyzed, such as: number of hospitalizations, age group, region and deaths. RESULTS: 103.467 hospitalizations for influenza were identified during the years 2015-2019. According to the age group of the hospitalizations, 26,2% are between 1 year and 4 years old and 11,7% are between 80 years and over. According to the death count, a total of 3.794 were described, with the age group over 80 years corresponding to the highest percentage, 43,4% during 2015-2019. In addition, according to region, 1.274 deaths were reported in the Northeast Region, with 33,5%. CONCLUSION: It is concluded that, even if the flu has mild symptoms and short duration, it can be fatal, especially in high-risk groups. Thus, the treatment and form of transmission must be oriented to the entire population, in order to reduce the number of cases and mortality from the disease. Prevention should also be valued, through information with vaccination campaigns, in order to avoid contamination by the flu virus.
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