Vector Biology and Behavior – Integrated Vector Management
Haroldo Bezerra Advisor Public Health Entomology PAHO/WHO Contents
• Vector biology and behavior • Key elementes of Integrated Vector Management/IVM • Progress and difficulties in the implementation of IVM • Challenges Vector biology and behavior Biological cycle and dengue transmission Vector Biology and behavior
Vector Biology and Behavior
El Salvador Mexico Cuba Oganofosforados, carbamatos y Temefos, malatión, fentión, Fentión, temefos, clorpirifos, deltametrina, algunos piretroides pirimifosmetil, fenitrotión clorpirifos, cipermetrina, lambdacihalotrina (Flores et al., 2006) deltametrina, lambdacihalotrina, (Rodríguez et al., 2010); Bisset et al., betacipermetrina y ciflutrina 2011) (Rodríguez et al., 2007 y Bisset et al., 2009) República Dominicana DDT, malatión, propoxur, permetrina y Nicaragua deltametrina (Mekuria et al., 1991) temefos, malatión, fentión, pirimifosmetil, fenitrotión clorpirifos, Puerto Rico deltametrina, lambdacihalotrina, Malatión betacipermetrina y ciflutrina (Field et al., 1984 (Rodríguez et al., 2007) Tinidad y Tobago Costa Rica Fentión, malatión y temefos temefos, malatión, fentión, (Polso et al., 2011) pirimifosmetil, fenitrotión clorpirifos, deltametrina, lambdacihalotrina, betacipermetrina y ciflutrina Martinique (Perich et al.,2003; Rodríguez et al., Bti, temefos, deltametrina 2007, Bisset et al., 2012) (Marcobe et al., 2011) Panamá Pirimifosmetil y temefos Venezuela (Echevers et al., 1975; Bisset et al., Fentión , malatión, temefos, 2003; Rodríguez et al., 2007) pirimfosmetil , clorpirifos , fenitrotión , deltametrina, lambdacihalotrina, Colombia betacipermetrina y ciflutrina DDT, etofenprox, lambdacihalotrina, (Rodríguez et al., 2007; Pérez et al., permetrina, bendiocarb, temefos y 2009) fenitrotión (Fonseca-Gonzalez et al., 2011 y Ocampo et al., 2011) Brasil Temefos,cipermetrina, Perú (Melo-Santos et al., 2010; temefos, malatión, fentión, Lima,et al., 2011) pirimifosmetil, fenitrotión clorpirifos, deltametrina, lambdacihalotrina, Argentina betacipermetrina y ciflutrina Temefos (Vargas et al., 2006; Rodriguez et al., (Biber et al., 2006; Llinás et 2007) al., 2010)
Fuente: Bisset J.A 2013, Bezerra, HSS y Programa Regional de Dengue 2013 Integrated Vector Management 11 Integrated Vector Management-IVM
Key elementes of integrated vector management : Advocacy, social mobilization and legislation. Colaboration within the health sector and with other sectors. Integrated approach (non chemical and chemical). Evidence- based decision making. WHO Capacity building. 2004
12 Integrated Vector Management-IVM Key elementes of integrated vector management :
Advocacy, social mobilization and legislation. Colaboration within the health sector and with other sectors. Integrated approch (non chemical and chemical). Evidence- based decision making. WHO 2004 Capacity building.
13 Objective: Aedes aegypti breeding sites controlled and mosquito density reduced
Strengthen the Entomologic surveillance system to guide the anti vectorial actions.
Emphasize the role of families in the elimination of breeding sites and the entomological risks on public health
Improve the quality and effectiveness of the anti vectorial actions
Develop basic operational research focused on generating knowledge to improve the decision making on dengue prevention and control • Reduction >60% positive recipients for Ae. aegypti (IRR = 0.33; P<0.05) National legislation for the proper disposal of tires in Brazil (policy development and implementation)
1999 to 2015: recolectados 3,2 billones de neumáticos (RECICLANIP) 2.7 millones de toneladas de neumáticos (2013)
Num. de ecopuntos , Brasil, 2004 -2013. background Integrated Vector Management-IVM
Key elementes of integrated vector management : Advocacy, social mobilization and legislation. Colaboration within the health sector and with other sectors. Integrated approch (non chemical and chemical). Evidence- based decision making. WHO Capacity building. 2004
17 Intersectoral collaboration through strategic alliances: the recycling industry
18 Dificulties
Integrated Vector Management-IVM Key elementes of integrated vector management : Advocacy, social mobilization and legislation. Colaboration within the health sector and with other sectors. Integrated approach (non chemical and chemical). Evidence- based decision making. WHO Capacity building. 2004
19 Dificulties Quality and safety Dificulties Quality of vector control equipments and interventions
. Vector control with insecticides sometimes is carried out with no order or consideration of the entomological criteria; using inadequate and damaged equipment with no calibration and without evaluation of vector susceptibility . Some health personnel responsible for management and execution of actions are not skilled or trained in correct use of insecticides Suceptibility to pirethoids in Ae. aegypti, México 2015
a) En mapa, en el cual visualmente (verde= eficacia del 98 al 100%, azul= eficacia del 90 al 97% y rojo=eficacia menor al 90%, lo que se traduce en una manifestación de resistencia a los insecticidas), se pueden apreciar los resultados del estudio. background Integrated Vector Management-IVM
Key elementes of integrated vector management : Advocacy, social mobilization and legislation. Colaboration within the health sector and with other sectors. Integrated approach (non chemical and chemical). Evidence- based decision making. WHO Capacity building. 2004
23 Entomological surveillance Quick evaluation of Aedes aegypti (LIRAa)
*
LIRAa
simplified method of collection of indices for Ae. aegypti based on samples of Dynamics of the 2006/2007 dengue outbreak in areas (blocks/ houses) Brazil Mem. Inst. Oswaldo Cruz vol.103 no.6 Rio de Janeiro Sept. 2008 Experiences: Brazil, Paraguay, Uruguay, Argentina, Bolivia, Chile (Parkland island), Panamá, Honduras, Nicaragua and Venezuela* Concrete actions: Argentina (2009) Bolivia (2009), Brasil (2003-13), Honduras (2010) 24 Vector Surveillance Ovitraps - Mexico
100 90 80 Chart Title 70 60 50 40 30 20 10 170,000 ovitrampas en 32 estados 0 Porcentaje de Ovitrampas positivas Promedio de huevecillos por Ovitrampa 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 Manejo Integrado de Vectores – MIV
Key elementes of integrated vector management : Advocacy, social mobilization and legislation. Colaboration within the health sector and with other sectors. Integrated approach (non chemical and chemical). Evidence- based decision making. Capacity building. WHO 2004
26 Collaborating centers
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27 Vector biology and behavior – Integrated Vector Management Challenge Challenge Implementation of IVM as model for control and elimination of VBDs
DENV CHIKV Zika Thank You