Incidence and spatial distribution of cases of dengue, from 2010 to 2019: an ecological study

Abstract

In the second half of the twentieth century, dengue fever spread throughout the tropics, threatening one-third of the world's population. It caused feverish illness in around 50 to 100 million people, with records of 500,000 cases of severe illness. 1 Dengue is caused by an arbovirus that is transmitted by the mosquitos Aedes aegypti and Aedes albopictus. Its symptoms range from an acute fever to a hemorrhagic condition, and can be caused by four different virus serotypes. 2 Once an Aedes female has become infected, it can transmit the virus to humans through blood transfers for the rest of its life, which leads to greater potential for spreading the disease. 3 Aedes aegypti also transmits other high-impact arboviruses such as chikungunya. 4 Circulation of different virus serotypes has increased the number of infected patients, especially with the severe form of the disease. 5 There is no specific therapy for dengue infections and supportive treatment can save lives. 6 The first cases of dengue in Brazil were recorded in the state of Roraima, in the northwestern area of the Amazon region, in 1981. 7 Dengue has become a serious public health problem in the city of Garanhuns, state of Pernambuco, northeastern Brazil. Over the last five years, the incidence of dengue has increased by 485.97%. Epidemiological studies have confirmed that the dengue virus, which first appeared in this region in 1986, presents high intensity of transmission. This research has therefore characterized a situation of lack of knowledge about the behavior of the virus and its vector. 8 In Pernambuco, the dengue virus serotype three (DENV-3) was associated with the most severe symptoms of the epidemic, from 1995 to 2006. 9 A total of 9,135 dengue cases were recorded in Pernambuco in 2018, corresponding to an incidence rate of 96.2 cases per 100,000 inhabitants.

Estudo Epidemiológico Dos Casos Notificados De Dengue No Ceará, Nordeste Do Brasil Em 2021

“…A dengue é uma doença endêmica em mais de 100 países, possui como agente etiológico o Dengue virus (DENV) pertencente à família Flaviviridae e ao gênero Flavivirus, no qual apresenta 4 sorotipos antigenicamente diferentes: DENV-1, DENV-2, DENV-3 e DENV-4 ( UNO & ROSS, 2018;RIBEIRO et al, 2017;MORAIS et al, 2020). A transmissão ocorre por meio da picada de fêmeas de mosquitos do gênero Aedes, principalmente da espécie Aedes aegypti (MATTHEWS, 2019).…”

Epidemiologia De Zoonoses No Ceará

“…A dengue é uma doença endêmica em mais de 100 países, possui como agente RIBEIRO et al, 2017;MORAIS et al, 2020). A transmissão ocorre por meio da picada de fêmeas de mosquitos do gênero Aedes, principalmente da espécie Aedes aegypti (MATTHEWS, 2019).…”