Estudo retrospectivo (histórico) da dengue no Brasil: características regionais e dinâmicas

Câmara, Fernando Portela; Theophilo, Regina Lúcia Gonçalves; Santos, Gualberto Teixeira dos; Pereira, Sílvia Regina Ferreira Gonçalves; Câmara, Daniel Cardoso Portela; Matos, Roberto Rodrigues C. de

doi:10.1590/s0037-86822007000200009

Cited by 74 publications

(54 citation statements)

References 10 publications

(4 reference statements)

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“…A similar observation was seen in a study 11 in which the highest concentration of notifications also occurred in the first semester of the year, especially in April, May, and June. According to the study 12 , this significant seasonal incidence of dengue in hot months is associated with the known sensibility of the Aedes aegypti's reproductive cycle and the temperature variations.…”

Section: Discussionsupporting

confidence: 86%

Epidemiological aspects of dengue in Aracaju, State of Sergipe, Brazil

Alves

Santos

Mendonça

et al. 2011

Rev. Soc. Bras. Med. Trop.

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Introduction:The dengue fever remains to be a disease of serious public health concern, and its incidence has increased in the past decades. This study aimed to characterize the epidemiological incidence of dengue in the period [2001][2002][2003][2004][2005][2006][2007][2008][2009][2010]. Methods: This is an epidemiological study of dengue in the municipality of Aracaju, state of Sergipe, in the period between 2001 and 2010, whose data were obtained from the Information System of Diseases Notifications. A descriptive analysis of the number of confirmed cases of dengue, according to year, semester, sanitary district, age, and sex, was performed. Results: There were 16,462 confirmed cases, especially in 2008, which obtained the highest incidence of the disease, with 10,485 confirmed cases. The first semester obtained the highest registration of cases during the years of research; this was predominated by females between 15 and 49 years old. With regard to the territorial distribution, the second district of the municipality obtained the highest number of cases. Conclusions: In 2008, in the City of Aracaju, SE, a significant increase in the proportion of dengue cases compared with other years was verified. However, a fast decline in the other years was observed, possibly because of the intensification of preventive actions to combat the mosquito that transmits the dengue virus.

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Section: Discussionsupporting

confidence: 86%

Epidemiological aspects of dengue in Aracaju, State of Sergipe, Brazil

Alves

Santos

Mendonça

et al. 2011

Rev. Soc. Bras. Med. Trop.

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“…The infestations occurred mainly in the months of highest rainfall levels at the different areas. Studies carried out in Vale do Paraíba (SP) 22 , São José do Rio Preto (SP) 23 , in the state of Maranhão (MA) 24 , Vila das Pedrinhas (south coast of the state of São Paulo) 25 , Manaus (AM) 26 , Paraíba (PB) 27 , Uberlândia (MG) 28 and Boa Vista (RR) 29 have shown that, even though there are differences in the rain dynamics in the several regions of Brazil, the highest incidence of the disease and the highest levels of vector infestations coincided with the rainy months, which were also the hottest months of the year in the country 30 .…”

Section: Rainfallmentioning

confidence: 99%

A ocorrência da dengue e variações meteorológicas no Brasil: revisão sistemática

Viana

Ignotti

2013

Rev. bras. epidemiol.

100

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Introduction: Dengue is configures in recent decades as an important cause of morbidity and mortality in Brazil and around the world reaching the tropical and subtropical areas. Objective: To review the scientific literature on the occurrence of dengue in Brazil and its relationship with meteorological variables. Method: A systematic review of studies published in databases (SciELO, PubMed, MEDLINE, Lilacs) using descriptors related to weather variations and dengue fever in Brazil, published between 1991 to 2010. It was selected 31 articles that had the study area nationwide. Results: Most epidemiological studies use ecological design, the studies make use of entomological trapping, are common also series of studies of the disease and spatial analysis. It is evident relationship between dengue incidence with temperature and rainfall, the association is more significant from the second to fourth months of the year. Comparative studies of drought and rain show seasonal behavior of the disease. There are difficulties in establishing unique pattern of seasonality of disease incidence and weather variables for the country. Conclusion: Dengue is strongly related to meteorological variables. The seasonal variation in temperature and rainfall influences the dynamics of the vector and the incidence of the disease throughout the country, regardless of the climate category. The number of cases of classic dengue and of dengue hemorrhagic fever has been increasing on an annual basis. It is estimated that 550 thousand hospitalizations with 20 thousand deaths occur per year among a total of approximately 2.5 billion exposed people 4,5 , and an average of 80 million new cases are reported every year 2 . KeywordsAs a reemerging endemic or pandemic disease, it occurs practically in all the tropical and subtropical regions of the planet 1 . The countries located in these regions are more susceptible due to diverse conditioning factors, such as: global changes, climate changes, weather variability, land use, water storage and irrigation, human population growth and urbanization 6 . Such factors, among others, significantly contribute to the proliferation and development of the Aedes aegypti mosquito -the virus vector 7-9 . Climate changes contribute to increase the number of people exposed to dengue to more than 2 billion and the projections for 2085 suggest that approximately 5 to 6 billion people (50 to 60% of the world's population) will be at risk regarding the disease transmission 10 .The seasonal dynamics of the dengue vector is commonly associated with climate changes and fluctuations 9,11 , which include: temperature increase and variations in rainfall and relative air humidity, conditions that favor a higher number of available breeding sites and, consequently, the development of the vector. The latter presents two distinct stages: aquatic, with the development phases of egg, larva and pupa, and terrestrial, which corresponds to the adult mosquito. Both stages are subject to environmental and climate changes 12,13 ...

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“…Unidade da federação mais setentrional da região sul, o norte do estado é atravessado pelo trópico de Capricórnio, que determina a transição entre o clima tropical e subtropical. 8 Sendo assim, podem-se encontrar temperaturas e climas distintos no mesmo território, como o norte do Estado com características semelhantes das encontradas na região sudeste do Brasil, com temperaturas mais elevadas, e o restante do território com um clima subtropical típico. A altitude também é um fator importante, influindo nas baixas temperaturas e restringindo a presença do vetor, cuja distribuição costuma não ocorrer acima de 1.000 metros acima do nível do mar.…”

Section: Introductionunclassified