An entomological surveillance system based on open spatial information for participative dengue control

Regis, Lêda; Souza, Wayner Vieira de; Furtado, André Freire; Fonseca, Cláudio Duarte; Silveira, José Constantino; Ribeiro, Paulo Justiniano; Melo-Santos, Maria Alice Varjal de; Carvalho, Marília Sá; Monteiro, Antônio Miguel Vieira

doi:10.1590/s0001-37652009000400004

Cited by 34 publications

(35 citation statements)

References 22 publications

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“…Geographical coordinates of trap location were taken using a Global Positioning System (GPS) and entered into the SMCP- Aedes geographical database. This database is based on open technology, open protocols and open data and was designed to make available reports and data analysis [19]. The S-ovt model used for sampling Aedes eggs, described in Regis et al [7], consists of a black plastic cup filled with two liters of water, two 5×15 cm wood paddles as egg substrates and two or four drops of a Bti-based product as larvicide, to prevent the trap from becoming a mosquito breeding site [6].…”

Section: Methodsmentioning

confidence: 99%

“…Aedes eggs are recognized by the operator on the digitalized image. The counting is based on mouse click over the picture and the number of identified eggs is registered and transmitted via web to the SMCP- Aedes Geographic Database [19]. Egg counting through the SDP system allowed analysis of paddles to be done around two times faster than the conventional microscopic method.…”

Section: Methodsmentioning

confidence: 99%

“…It consists of an all-integrated approach supported by the intensive use of the web and free software to collect, store, analyze and disseminate information on the spatial-temporal distribution of the estimated density of Aedes , based on data that is systematically collected with the use of ovitraps and integrated through the use of open geospatial technologies such as GIS, Remote Sensing Images and Spatial Statistics analytical tools [19]. This system was developed based on a 3-year longitudinal experiment using 460 georeferenced ovtitraps in seven districts of Recife [7].…”

Section: Introductionmentioning

confidence: 99%

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Sustained Reduction of the Dengue Vector Population Resulting from an Integrated Control Strategy Applied in Two Brazilian Cities

et al. 2013

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Aedes aegypti has developed evolution-driven adaptations for surviving in the domestic human habitat. Several trap models have been designed considering these strategies and tested for monitoring this efficient vector of Dengue. Here, we report a real-scale evaluation of a system for monitoring and controlling mosquito populations based on egg sampling coupled with geographic information systems technology. The SMCP-Aedes, a system based on open technology and open data standards, was set up from March/2008 to October/2011 as a pilot trial in two sites of Pernambuco -Brazil: Ipojuca (10,000 residents) and Santa Cruz (83,000), in a joint effort of health authorities and staff, and a network of scientists providing scientific support. A widespread infestation by Aedes was found in both sites in 2008–2009, with 96.8%–100% trap positivity. Egg densities were markedly higher in SCC than in Ipojuca. A 90% decrease in egg density was recorded in SCC after two years of sustained control pressure imposed by suppression of >7,500,000 eggs and >3,200 adults, plus larval control by adding fishes to cisterns. In Ipojuca, 1.1 million mosquito eggs were suppressed and a 77% reduction in egg density was achieved. This study aimed at assessing the applicability of a system using GIS and spatial statistic analysis tools for quantitative assessment of mosquito populations. It also provided useful information on the requirements for reducing well-established mosquito populations. Results from two cities led us to conclude that the success in markedly reducing an Aedes population required the appropriate choice of control measures for sustained mass elimination guided by a user-friendly mosquito surveillance system. The system was able to support interventional decisions and to assess the program’s success. Additionally, it created a stimulating environment for health staff and residents, which had a positive impact on their commitment to the dengue control program.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sustained Reduction of the Dengue Vector Population Resulting from an Integrated Control Strategy Applied in Two Brazilian Cities

et al. 2013

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“…En otros estudios se ha señalado la movilidad poblacional como un factor de riesgo para la presencia del vector en aquellos lugares más próximos a los centros urbanos (1,28 En este estudio, el índice de Breteau fue de 34 en Anapoima y de 51 en La Mesa, lo cual indica que existe riesgo de transmisión del dengue en el área rural de los dos municipios. Es importante resaltar que, aunque estos indicadores evidencian la infestación con el vector, no reflejan suficientemente el riesgo de transmisión de la enfermedad (33,34).…”

Section: Discussionunclassified

Spatial distribution of Aedes aegypti (Diptera: Culicidae) in the rural area of two municipalities of Cundinamarca, Colombia

et al. 2017

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Introducción. Es difícil adaptar o formular nuevas estrategias para el control del dengue en las áreas rurales debido a la dispersión de los hogares y a la falta de conocimiento sobre la presencia y el comportamiento del vector en estas áreas. El análisis de los datos espaciales podría ayudar a comprender las dinámicas temporales y espaciales relacionadas con la transmisión de enfermedades transmitidas por vectores en las zonas rurales y, por lo tanto, contribuir a la prevención y el control del dengue.Objetivo. Determinar la probabilidad de la presencia del vector del dengue, Aedes aegypti, en el área rural de los municipios de Anapoima y La Mesa, Cundinamarca, Colombia.Materiales y métodos. Se visitaron 102 viviendas del área rural, se inspeccionaron los criaderos potenciales del mosquito A. aegypti y se capturaron las formas adultas encontradas en su interior. La probabilidad de la presencia o la ausencia del vector en el área de estudio, se estableció mediante el método de interpolación espacial kriging.Resultados. La región con mayor probabilidad para la presencia del vector se encontró en la parte central, cerca de los centros urbanos de los dos municipios.Conclusión. Los análisis de las dinámicas espacio-temporales de los vectores de enfermedades pueden utilizarse en los sistemas para su vigilancia, con el fin de complementar los métodos usados actualmente, optimizar la determinación de las áreas de intervención de control vectorial y ahorrar recursos.

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“…One resource for this is the Semantic Web, which was designed to promote interoperability of online resources and concepts, such as mash-ups facilitating integration of data across the Web [31]. Examples of public health applications that have used advanced and open-source Web technology include EpiVue [32] and SMCP-Aedes for dengue fever surveillance [33]. However, these systems do not address issues related to routine sharing and integration of animal and human health data.…”

Section: Discussionmentioning

confidence: 99%

Examining the Differences in Format and Characteristics of Zoonotic Virus Surveillance Data on State Agency Websites

Scotch¹,

Baarson²,

Beard³

et al. 2013

J Med Internet Res

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BackgroundZoonotic viruses are infectious organisms transmittable between animals and humans. Agencies of public health, agriculture, and wildlife conduct surveillance of zoonotic viruses and often report data on their websites. However, the format and characteristics of these data are not known.ObjectiveTo describe and compare the format and characteristics of statistics of zoonotic viruses on state public health, agriculture, and wildlife agency websites.MethodsFor each state, we considered the websites of that state’s public health, agriculture, and wildlife agency. For each website, we noted the presence of any statistics for zoonotic viruses from 2000-2012. We analyzed the data using numerous categories including type of statistic, temporal and geographic level of detail, and format. We prioritized our analysis within each category based on assumptions of individuals’ preferences for extracting and analyzing data from websites. Thus, if two types of data (such as city and state-level) were present for a given virus in a given year, we counted the one with higher priority (city). External links from agency sites to other websites were not considered.ResultsFrom 2000-2012, state health departments had the most extensive virus data, followed by agriculture, and then wildlife. We focused on the seven viruses that were common across the three agencies. These included rabies, West Nile virus, eastern equine encephalitis, St. Louis encephalitis, western equine encephalitis, influenza, and dengue fever. Simple numerical totals were most often used to report the data (89% for public health, 81% for agriculture, and 82% for wildlife), and proportions were not different (chi-square P=.15). Public health data were most often presented yearly (66%), while agriculture and wildlife agencies often described cases as they occurred (Fisher’s Exact test P<.001). Regarding format, public health agencies had more downloadable PDF files (68%), while agriculture (61%) and wildlife agencies (46%) presented data directly in the text of the HTML webpage (Fisher’s Exact test P<.001). Demographics and other information including age, gender, and host were limited. Finally, a Fisher’s Exact test showed no association between geography data and agency type (P=.08). However, it was noted that agriculture department data was often at the county level (63%), while public health was mixed between county (38%) and state (35%).ConclusionsThis study focused on the format and characteristics of statistics of zoonotic viruses on websites of state public health, wildlife, and agriculture agencies in the context of population health surveillance. Data on zoonotic viruses varied across agencies presenting challenges for researchers needing to integrate animal and human data from different websites.

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An entomological surveillance system based on open spatial information for participative dengue control

Cited by 34 publications

References 22 publications

Sustained Reduction of the Dengue Vector Population Resulting from an Integrated Control Strategy Applied in Two Brazilian Cities

Sustained Reduction of the Dengue Vector Population Resulting from an Integrated Control Strategy Applied in Two Brazilian Cities

Spatial distribution of Aedes aegypti (Diptera: Culicidae) in the rural area of two municipalities of Cundinamarca, Colombia

Examining the Differences in Format and Characteristics of Zoonotic Virus Surveillance Data on State Agency Websites

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