scholarly journals Inspection of Aedes Aegypti Breeding Sites in Brazil: Application of Multi-criteria Analysis to Develop an Index (Preprint)

10.2196/19502 ◽  
2020 ◽  
Author(s):  
Yuri Lima ◽  
Wallace Pinheiro ◽  
Carlos Eduardo Barbosa ◽  
Matheus Magalhães ◽  
Miriam Chaves ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Breeding Sites ◽  
Multi Criteria Analysis

scholarly journals Inspection of Aedes Aegypti Breeding Sites in Brazil: Application of Multi-criteria Analysis to Develop an Index (Preprint)

2020 ◽  
Author(s):  
Yuri Lima ◽  
Wallace Pinheiro ◽  
Carlos Eduardo Barbosa ◽  
Matheus Magalhães ◽  
Miriam Chaves ◽  
...  
Keyword(s):  
Public Health ◽  
Aedes Aegypti ◽  
Yellow Fever ◽  
Public Health Issue ◽  
Heat Map ◽  
Breeding Sites ◽  
Future Studies ◽  
Multi Criteria Analysis ◽  
Planning Development ◽  
Zika Fever

UNSTRUCTURED Aedes aegypti is a vector for the transmission of diseases such as dengue fever, chikungunya, Zika fever, and yellow fever. In 2016, over one million cases of these diseases were reported in Brazil — an alarming public health issue. One of the ways of controlling the disease is by inspecting and neutralizing the places where the Aedes aegypti lays its eggs through the repository of data obtained from the Ministry of Planning, Development, and Administration. In this work, we propose a multi-criteria analysis to create an index for the inspections reported through the system. We applied part of the proposed analysis to a database of inspections in government buildings to test our proposition via the generation of a heat map, which let us draw some conclusions and propose future studies.

GAMBARAN INDEKS LARVA AEDES AEGYPTI DI BUFFER WILAYAH KERJA BANDARA SEPINGGAN BALIKPAPAN

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Abdurrakhman abdurrakhman Abdurrakhman
Keyword(s):  
Aedes Aegypti ◽  
Buffer Zone ◽  
Chi Square ◽  
Cross Sectional ◽  
Breeding Sites ◽  
Dengue Disease ◽  
Vector Borne Diseases ◽  
Transportation Equipment ◽  
Chi Square Test ◽  
Larvae Density

ABSTRACT : The House index and Container Index in the buffer area of ​​the working area of ​​Balikpapan Sepinggan Airport is still above 1%, so the potential for the spread of dengue disease. Mobilization of people, goods and transportation equipment will increasingly affect the transmission of disease in ports and airports, especially for vector-borne diseases. This study aims to analyze the risk factors associated with larvae density of Aedes aegypti and describe the larvae index in the buffer zone of the Sepinggan Balikpapan Airport This study was a descriptive study with a cross sectional design. The sample in this study was 121 houses with a proportionate stratified random sampling, the research location was in the buffer zone of Sepinggan Balikpapan Airport in November 2018. The variables studied were houses with positive larvae containers, breeding sites and PSN behavior and larvasidation. The data was analyzed using the chi square test. There was a relationship between houses with larvae positive Aedes aegypti, behavior of Mosquito Nest Eradication (PSN) and larvasidation with larvae density of Aedes aegypti but not for breeding sites (p = 0.00 and 95% CI = 0.64), and   (p = 0.00 and 95% CI = 0.34). The description of several Aedes aegypti larvae index, namely House Index (HI) = 57.02%, Container Index (CI) = 24.36%, Bruteau Index (BI) = 148.76, and Flick Free Numbers (ABJ) = 42.98 %. Houses with larvae of Aedes aegypti larvae and PSN and larvasidation behavior were associated with larvae density of Aedes aegypti. The index of HI, CI and BI larvae is of high value so there is a risk of DBD transmission

scholarly journals Spatial distribution of potential and positive Aedes aegypti breeding sites

Biomédica ◽  
2017 ◽  
Vol 37 ◽  
pp. 59
Author(s):  
Daniel Elías Cuartas ◽  
Genny Martínez ◽  
Diana María Caicedo ◽  
Jhonny Garcés ◽  
Yoseth Ariza-Araujo ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Aedes Aegypti ◽  
Breeding Sites

Introducción. La distribución espacial de Aedes aegypti es heterogénea, y la interacción entre criaderos positivos y potenciales en el intradomicilio y el extradomicilio es uno de los aspectos más difíciles de caracterizar en los programas de control vectorial.Objetivo. Describir la relación espacial entre los criaderos potenciales y positivos de A. aegypti en el intradomicilio y en el extradomicilio en un sector de Cali, Colombia.Materiales y métodos. Se hizo una encuesta entomológica con el objetivo de recolectar datos de los criaderos en el intradomicilio y el extradomicilio. El análisis exploratorio de los datos espaciales incluyó la localización, la tendencia espacial, la autocorrelación espacial local, la continuidad espacial y la correlación espacial de los criaderos positivos y potenciales según el hábitat.Resultados. Se determinaron las tendencias espaciales. Mediante el análisis de autocorrelación espacial local se ubicaron los conglomerados de criaderos potenciales y positivos del extradomicilio. Se encontró una correlación positiva entre los criaderos potenciales y los positivos y una correlación negativa entre el intradomicilio y el extradomicilio.Conclusiones. La relación espacial entre criaderos positivos y potenciales de A. aegypti en el intradomicilio y el extradomicilio es dinámica y muy sensible a las características de cada territorio, por lo que establecer su distribución en el espacio contribuye a la priorización de recursos y acciones en los programas de control vectorial.

scholarly journals Household-Level Risk Factors for Aedes aegypti Pupal Density in Guayaquil, Ecuador

2020 ◽  
Author(s):  
Thien-An Ha ◽  
Tomás M. León ◽  
Karina Lalangui ◽  
Patricio Ponce ◽  
John M. Marshall ◽  
...  
Keyword(s):  
Risk Factors ◽  
Aedes Aegypti ◽  
Vector Control ◽  
Negative Binomial Regression Model ◽  
Control Methods ◽  
Municipal Services ◽  
Breeding Sites ◽  
Household Level ◽  
Level Model ◽  
The Impact

AbstractBackgroundVector-borne diseases are a major cause of disease burden in Guayaquil, Ecuador, especially arboviruses spread by Aedes aegypti mosquitoes. Understanding which household characteristics and risk factors lead to higher Ae. aegypti densities and consequent disease risk can help inform and optimize vector control programs.MethodsCross-sectional entomological surveys were conducted in Guayaquil between 2013 and 2016, covering household demographics, municipal services, potential breeding containers, presence of Ae. aegypti larvae and pupae, and history of using mosquito control methods. A zero-truncated negative binomial regression model was fitted to data for estimating the household pupal index. An additional model assessed the factors of the most productive breeding sites across all of the households.ResultsOf surveyed households, 610 satisfied inclusion criteria. The final household-level model found that collection of large solid items (e.g., furniture and tires) and rainfall the week of and 2 weeks before collection were negatively correlated with average pupae per container, while bed canopy use, unemployment, container water volume, and the interaction between large solid collection and rainfall 2 weeks before the sampling event were positively correlated. Selection of these variables across other top candidate models with ΔAICc < 1 was robust, with the strongest effects from large solid collection and bed canopy use. The final container-level model explaining the characteristics of breeding sites found that contaminated water is positively correlated with Ae. aegypti pupae counts while breeding sites composed of car parts, furniture, sewerage parts, vases, ceramic material, glass material, metal material, and plastic material were all negatively correlated.ConclusionHaving access to municipal services like bulky item pickup was effective at reducing mosquito proliferation in households. Association of bed canopy use with higher mosquito densities is unexpected, and may be a consequence of large local mosquito populations or due to limited use or effectiveness of other vector control methods. The impact of rainfall on mosquito density is multifaceted, as it may both create new habitat and “wash out” existing habitat. Providing services and social/technical interventions focused on monitoring and eliminating productive breeding sites is important for reducing aquatic-stage mosquito densities in households at risk for Ae. aegypti-transmitted diseases.

Pyriproxyfen Ingested With Attractive Toxic Sugar Baits Is Carried by the Feces and Reduces the Reproductive Potential of Adult Female Aedes aegypti (Diptera: Culicidae)

2021 ◽  
Author(s):  
Tarsis Tamar Pereira Silva ◽  
Aurea Vieira Teixeira ◽  
Alexandre de Almeida e Silva
Keyword(s):  
Aedes Aegypti ◽  
Adult Female ◽  
Filter Paper ◽  
Reproductive Potential ◽  
Residual Effect ◽  
Time Intervals ◽  
Breeding Sites ◽  
Dry Conditions ◽  
Aqueous Conditions ◽  
New Strategies

Abstract In the search for new strategies to control Aedes aegypti Linnaeus (Diptera: Culicidae), several studies have successfully related pyriproxyfen (PPF) tarsal transference to breeding sites (autodissemination), as well as the sterilization potential of females exposed to PPF. Potential PPF autodissemination by mosquito feces after the ingestion of sugar baits has also been proposed. Therefore, the present work evaluated several parameters, e.g., fecal production, residuality under dry and aqueous conditions, PPF excretion affecting emergence inhibition (EI) by fecal deposits of Ae. aegypti fed with attractive toxic sugar baits (ATSBs) containing PPF as well as their reproductive potential. Females were fed with ATSBs offered as droplets and the feces were collected using filter paper and transferred to plastic cups with L3 larvae to evaluate EI. The residual effect of feces in aqueous and dry conditions and PPF excretion on EI was obtained by keeping the feces in water or dried for different time intervals and using feces collected at 24-h intervals, respectively. Females received a bloodmeal after feeding on ATSBs, eggs and larval counting expressed the reproductive potential. The fecal mass was not affected by PPF concentration, but EI increased from 33 to 54% as the PPF concentration increased. The PPF excretion in the feces exceeded 96 h. The residual effect in the EI for feces kept in water was reduced by more than 60% after 30 d but was not affected under dry conditions. The fecundity and fertility of the females were reduced up to 51% and 97%, respectively.

scholarly journals Natural Variation in Physicochemical Profiles and Bacterial Communities Associated with Aedes aegypti Breeding Sites and Larvae on Guadeloupe and French Guiana

2020 ◽  
Author(s):  
Lyza Hery ◽  
Amandine Guidez ◽  
Audrey-Anne Durand ◽  
Christelle Delannay ◽  
Josiann Normandeau-Guimond ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Bacterial Communities ◽  
Natural Variation ◽  
French Guiana ◽  
Breeding Sites

scholarly journals Influence of strategic points in the dispersion of Aedes aegypti in infested areas

2019 ◽  
Vol 53 ◽  
pp. 29 ◽  
Author(s):  
Gerson Laurindo Barbosa ◽  
Mariana De Oliveira Lage ◽  
Valmir Roberto Andrade ◽  
Antônio Henrique Alves Gomes ◽  
Jose Alberto Quintanilha ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Spatial Statistics ◽  
Random Distribution ◽  
Control Program ◽  
Control Area ◽  
Point Of View ◽  
Economic Point ◽  
Breeding Sites ◽  
Vector Control Program

OBJECTIVE: To evaluate whether sites with large amount of potential breeding sites for immature forms of Aedes aegypti, called strategic points, influence in the active vector’s dispersion into properties in their surroundings. METHODS: We selected four areas in the municipality of Campinas, three of them with strategic points classified as high, moderate, and low risk according to infestation and a control area, without strategic points. Between October 2015 and September 2016, we monthly installed oviposition traps and evaluated the infestation by Ae. aegypti in all properties of each selected area. To verify if there was vector dispersion from each strategic point, based on its location, we investigated the formation of clusters with excess of eggs or larvae or pupae containers, using the Gi spatial statistics. RESULTS: The amount of eggs collected in the ovitraps and the number of positive containers for Ae. aegypti did not show clusters of high values concerning its distance from the strategic point. Both presented random distribution not spatially associated with the positioning of strategic points in the area. CONCLUSIONS: Strategic points are not confirmed as responsible for the vector’s dispersion for properties in their surroundings. We highlight the importance of reviewing the current strategy of the vector control program in Brazil, seeking a balance from the technical, operational, and economic point of view, without disregarding the role of strategic points as major producers of mosquitoes and their importance in the dissemination of arboviruses in periods of transmission.

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