Deforestation and malaria incidence in the legal Amazon Region between 1996 and 2012

Guimarães, Raphael Mendonça; Valente, Bárbara Campos Silva; Faria, Priscila Almeida; Stephanelli, Lásaro Linhares; Chaiblich, Juliana Valentim; Arjona, Felipe Bagatoli Silveira

doi:10.1590/1414-462x201500040125

Cited by 7 publications

(9 citation statements)

References 10 publications

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“…vivax . Interestingly, contrary to previous studies [22] [3]and partly as a consequence of the process of occupation of the economic frontier, most of the areas where malaria occurred (formerly areas with forest fringes, industrial mining, illegal mining, agriculture, road construction, deforestation, and açaí and Brazil nut extraction) were concentrated along the Amazon River and in the extractive reserves [39] [22] [40]. This study aimed to integrate evidence-based disease surveillance and control by ranges or zones of territorial occupation of the economic frontier according to economic activities.…”

Section: Discussionmentioning

confidence: 76%

Spatial spread of malaria and economic frontier expansion in the Brazilian Amazon

et al. 2019

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The temporal and spatial evolution of malaria was described for the postfrontier phase of the Brazilian Amazon in 2003–2013. The current ecological study aimed to understand the relationship between spatial population mobility and the distribution of malaria cases. The study identified epidemiologically relevant areas using regional statistical modeling and spatial analyses that considered differential infections and types of work activities. Annual parasite incidence (API) in the region was highest in hotspots along the Amazon River and in the south and west settlement zone of Hiléia, with concentrations in environmental protection areas and açaí and Brazil nut extraction areas. The dispersal force decreased in the Central Amazon due to rapid urbanization and improved socioeconomic conditions for workers in consolidated settlement areas. The study characterized the spatial patterns of disease transmission according to the economic activity and regionalization of geographic areas, confirming that the incidence of infection by work activity and labor flow is linked to extractive activities and agricultural settlements.

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Section: Discussionmentioning

confidence: 76%

Spatial spread of malaria and economic frontier expansion in the Brazilian Amazon

et al. 2019

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“…Fish farming was heavily subsidised by the government of the state of Acre in 2005, a possible reason for the explosion in malaria cases in this state, particularly in 2006 (Costa et al 2010, Oliveira-Ferreira et al 2010, Duarte et al 2014) and in 2012, when Acre was one of the three states with the highest rates of deforestation and malaria (Guimarães et al 2016). The complex scenario of malaria surveillance on the border between Brazil, Bolivia and Peru deserve special attention.…”

Section: Discussionmentioning

confidence: 99%

“…These reductions may be a result of implementation of the intensification plan of malaria control activities in the Brazilian Amazon (PIACM), which was launched in 2000 (MS/SVS 2000). The extent to which vector control measures have been intensified and the improvements in access to timely diagnosis and treatment (Oliveira-Ferreira et al 2010, Griffing et al 2015), as well as the decreasing deforestation rate, may reflect in changes in malaria incidence in the BAR (Guimarães et al 2016). …”

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confidence: 99%

Time trends and changes in the distribution of malaria cases in the Brazilian Amazon Region, 2004-2013

Lima

Lapouble

Duarte

2016

Mem. Inst. Oswaldo Cruz

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Recent efforts to reduce malaria incidence have had some successes. Nevertheless, malaria persists as a significant public health problem in the Brazilian Amazon. The objective of this study was to describe changes in malaria case characteristics and to identify trends in malaria incidence in the Brazilian Amazon. This study used data from the Malaria Epidemiological Surveillance and Case Notification Information System from 2004 to 2013. The annual parasite incidence (API) was calculated and joinpoint regression was used to assess the trends in API over time. There was a sharp increase in API in the state of Acre, followed by two periods of decrease. Pará also presented inconsistent decreases over the study period. Amapá, Amazonas, Rondônia, and Roraima showed statistically significant decreases over the period. The sharpest decrease occurred in Rondônia, with a reduction of 21.7% in the average annual percent change (AAPC) (AAPC: -21.7%; 95% confidence interval: -25.4%, -17.8%; p < 0.05). This panorama of malaria incidence highlights the importance of integrating evidence-based malaria surveillance and control. Malaria is highly preventable, and eliminating its transmission should be a goal in coming decades.

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“…In Brazil, the Amazon region accounts for 99% of malaria cases, and the incidence of malaria in gold mining regions is proportional to deforestation, being present in 39 cities of this biome [72,73]. Although the incidence rates may be even higher (31.3 to 94%), there has been a reduction in recent years in response to control programs implemented by public health services, which can be seen in the gold mining region in Colniza, where there was a seroprevalence of 4.5% [14,15,16,44,74,75].…”

Section: Discussionmentioning

confidence: 99%

Malaria and Hantavirus Pulmonary Syndrome in Gold Mining in the Amazon Region, Brazil

Terças-Trettel

Oliveira²,

Fontes

et al. 2019

IJERPH

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People living in mining regions are exposed to numerous biological agents by several specific types of transmission mechanisms. This study is designed to describe fatal hantavirus pulmonary syndrome (HPS) cases confirmed by serology and molecular analysis, where a seroprevalence survey was conducted in the gold mining regions of the state of Mato Grosso, in the official Amazon region, Brazil. Two fatal cases of HPS were confirmed in a mining area in the Legal Amazon, where malaria is one of the most important public health problems. A molecular analysis detected the presence of the genome of the Castelo dos Sonhos virus. Out of the 112 blood samples analyzed, five were positive for Plasmodium infection (four P. falciparum and one P. vivax), and four were seropositive for hantavirus, showing a seroprevalence of 3.57%. One of the four miners who was seroreactive for hantavirus concomitantly had P. falciparum infection, which was confirmed by thick blood smear. This manuscript highlights the importance of considering hantavirus pulmonary syndrome as a diagnostic possibility in febrile infection associated with pulmonary manifestations in mining areas where malaria cases are often identified.

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Deforestation and malaria incidence in the legal Amazon Region between 1996 and 2012

Cited by 7 publications

References 10 publications

Spatial spread of malaria and economic frontier expansion in the Brazilian Amazon

Spatial spread of malaria and economic frontier expansion in the Brazilian Amazon

Time trends and changes in the distribution of malaria cases in the Brazilian Amazon Region, 2004-2013

Malaria and Hantavirus Pulmonary Syndrome in Gold Mining in the Amazon Region, Brazil

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