Environmental and demographic determinants of dengue incidence in Brazil

Johansen, Igor Cavallini; Carmo, Roberto Luíz do; Alves, Luciana Correia; Bueno, Maria Izabel M. S.

doi:10.15446/rsap.v20n3.54315

Cited by 27 publications

(33 citation statements)

References 16 publications

(15 reference statements)

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“…Regarding Strategic Points, we found that the addition of one SP in an area tended to increase the dengue incidence rate by 3%, a result consistent with previous findings [26,27]. Although there are clear guidelines on how to monitor SPs, including mandatory inspection visits every fifteen days [24], limited financial resources, skilled professionals or even violence in an area can affect the regularity of these visits [26,54].…”

Section: Discussionsupporting

confidence: 87%

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Population mobility and dengue fever transmission in a major city in Southeastern Brazil, 2007-2015

Johansen

Castro

Alves

et al. 2019

Preprint

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25Background 26 Around 14% of world dengue virus (DENV) cases occur in the Americas, the majority 27 of them in Brazil. Although socioeconomic, environmental and behavioral correlates 28 of dengue have been analyzed for different contexts, the role played by population 29 mobility on DENV epidemics, especially at the local level, remains scant. This study 30 assesses whether the daily pattern of population mobility is associated with DENV 31 transmission in Campinas, a Brazilian major city with over 1.2 million inhabitants in 32 São Paulo state. 33 Methodology/Principal Findings 34 DENV notifications from 2007 to 2015 were geocoded at street level (n=114,884) and 35 combined with sociodemographic and environmental data from the 2010 Population 36 Census. Population mobility was extracted from the Origin-Destination Survey 37 (ODS), carried out in 2011, and daily precipitation was obtained from satellite 38 imagery. Zero-Inflated Negative Binomial (ZINB) regression models controlled by 39 demographic and environmental factors revealed that high population mobility had a 40 substantial positive effect on higher risk for DENV transmission. High income and 41 residence in apartments were found to be protective against the disease, while 42 unpaved streets, number of strategic points (such as scrapyards and tire repair 43 shops), and precipitation were consistently risk factors for DENV infection.44 Conclusions/Significance 45 The use of fine-scale geographical data can unravel transmission idiosyncrasies not 46 evident from a coarse spatial analysis. Even in a major city like Campinas, the vast 47 majority of population daily mobility occurs at short distances. Based on our results, 48 public policies on DENV transmission control should dedicate special attention to 49 local hubs of population mobility, especially during high transmission weeks and in 50 high dengue incidence areas. 51 52 Author Summary 53 Currently, about half of the world population is at risk of a dengue infection. Numerous 54 studies have addressed the socioeconomic and environmental determinants of the 55 disease. However, little is known about the role played by population mobility on 56 dengue transmission, particularly at the local scale. This study aims at investigating 57 this issue. Our hypothesis was that population movements are a prominent driving 58 force for dengue diffusion locally. We investigated the case of Campinas, a 59 municipality with over 1.2 million inhabitants in Brazil that recorded dengue epidemics 60 in 2007, 2014 and 2015. Our study focused on the years 2007 to 2015, comprising 61 more than 114 thousand cases, geocoded to the household address, and combined 62 with socioeconomic, environmental and daily population mobility data. Our results 63showed that even controlling for demographic and environmental factors, population 64 mobility was the most important predictor for dengue fever incidence. 90 is in course in the municipality [11]. Therefore, DENV remains a public health 91 challenge in Campinas. 92While soc...

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Section: Discussionsupporting

confidence: 87%

“…We also gathered data on Strategic Points (SPs), comprising locations such as junkyards, tire repair shops, deposits of recyclable materials, etc. They are essential for understanding dengue occurrence as these areas present huge potential to accumulate Aedes breeding sites [24,26,27]. Examples are shown in Fig 2.…”

Section: Methodsmentioning

confidence: 99%

Population mobility and dengue fever transmission in a major city in Southeastern Brazil, 2007-2015

Johansen

Castro

Alves

et al. 2019

Preprint

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“…The WHO is also highlighting the importance of an integrated strategy to improve the outcomes of healthcare systems in infectious disease control [6,55]. This is especially relevant in a disease such as dengue, whose dissemination patterns are influenced by numerous, multisectoral aspects [21]. Systemic approaches are also important for Health Geography, as the understanding of diseases' spatial distribution requires synergy between different domains of surveillance, environmental and public health [8].…”

Section: Discussionmentioning

confidence: 99%

“…This requires considering numerous multisectoral aspects, as many environmental and socioeconomic factors have been linked to the breeding of A. Aegypti. These can be related to the climate and man-made urban environments, such as the presence of stagnant water in houses and abandoned buildings, and inadequate water, sanitation systems, and waste management [21][22][23].…”

Section: Dengue Dengue Surveillance and Relevance In Global Public mentioning

confidence: 99%

Dengue Surveillance System in Brazil: A Qualitative Study in the Federal District

Angelo

Ramalho

Gurgel

et al. 2020

IJERPH

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Dengue’s increasing trends raise concerns over global health and pose a challenge to the Brazilian health system, highlighting the necessity of a strong surveillance system to reduce morbidity, mortality, and the economic burden of this disease. Although the Brazilian surveillance system reports more dengue cases than any other country, recent studies suggest that non-reported cases are the majority. The aim of the study is to explore the strengths and weaknesses of the Brazilian surveillance system, particularly looking at the functioning of data collection and reporting. This was done through qualitative semi-structured interviews with 17 experts in dengue surveillance, supported by quantitative data from the official notification system. To select the interviewees, purposive and theoretical sampling were used. Data were analyzed through thematic analysis. The research highlighted that a lack of human and technological resources in healthcare units and surveillance departments slows down the notification process and data analysis. Due to a lack of integration in the private sector, the surveillance system fails to detect the socioeconomic profile of the patients. Investments in public healthcare, human and technological resources for surveillance and better integration in the private healthcare system, and vector surveillance may improve dengue surveillance.

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“…A study in Brazil found that dengue is socially more likely to reach populations with low economic status (Johansen et al, 2018). In addition, the higher the level of education, the better the practice of implementing dengue prevention (Causa et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Revenue, Knowledge, Attitudes, and Implementation Regarding the Dengue Fever Prevention Program in Medan, Indonesia

Santhi

Marsaulina

Nurmaini

2020

bioex

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The best program to control the spread of dengue infection is a dengue prevention program. Indonesia has a dengue prevention program known as 3M Plus. Medan City is one of the endemic areas of dengue fever in Indonesia. This study aims to evaluate the income, knowledge, attitude and implementation of the dengue prevention program in Medan. Information on sociodemography, knowledge, attitudes, and implementation of dengue prevention was collected using a semistructured questionnaire that had been tested previously. This cross-sectional survey was conducted with face-to-face interviews with 100 randomly selected heads of households. Bivariate analysis using chi-square test. The results showed that overall participants had low family income, poor dengue knowledge, moderate attitude and moderate prevention implementation. There was a significant positive relationship between family income and implementation of dengue prevention (p = 0.001), knowledge and implementation of dengue prevention (p = 0.012), and attitudes and implementation of dengue prevention (p <0.001). In conclusion, dengue prevention programs require increased knowledge, attitudes and implementation of dengue prevention. Households with an income below the city minimum wage must be the main target of the dengue prevention campaign. Knowledge-based campaigns and arousing positive attitudes will increase the application of dengue prevention.

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Environmental and demographic determinants of dengue incidence in Brazil

Cited by 27 publications

References 16 publications

Population mobility and dengue fever transmission in a major city in Southeastern Brazil, 2007-2015

Population mobility and dengue fever transmission in a major city in Southeastern Brazil, 2007-2015

Dengue Surveillance System in Brazil: A Qualitative Study in the Federal District

Revenue, Knowledge, Attitudes, and Implementation Regarding the Dengue Fever Prevention Program in Medan, Indonesia

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