Operation note on dengue vector control against <i>Aedes albopictus</i> in Chiba City, Japan, where an autochthonous dengue case was confirmed in September 2014

Background In Malaysia, dengue remains a top priority disease and usage of insecticides is the main method for dengue vector control. Limited baseline insecticide resistance data in dengue hotspots has prompted us to conduct this study. The present study reports the use of a map on the insecticide susceptibility status of Aedes aegypti and Aedes albopictus to provide a quick visualization and overview of the distribution of insecticide resistance. Method and results The insecticide resistance status of Aedes populations collected from 24 dengue hotspot areas from the period of December 2018 until June 2019 was proactively monitored using the World Health Organization standard protocol for adult and larval susceptibility testing was conducted, together with elucidation of the mechanisms involved in observed resistance. For resistance monitoring, susceptibility to three adulticides (permethrin, deltamethrin, and malathion) was tested, as well as susceptibility to the larvicide, temephos. Data showed significant resistance to both deltamethrin and permethrin (pyrethroid insecticides), and to malathion (organophosphate insecticide) in all sampled Aedes aegypti populations, while variable resistance patterns were found in the sampled Aedes albopictus populations. Temephos resistance was observed when larvae were tested using the diagnostic dosage of 0.012mg/L but not at the operational dosage of 1mg/L for both species. Conclusion The present study highlights evidence of a potential threat to the effectiveness of insecticides currently used in dengue vector control, and the urgent requirement for insecticide resistance management to be integrated into the National Dengue Control Program.

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Avaliação da produtividade dos criadouros do Aedes aegypti (L.) e Aedes albopictus (Skuse) através dos dados da vigilância em Parati – RJ.

EntomoBrasilis ◽

10.12741/ebrasilis.v5i3.249 ◽

2012 ◽

Vol 5 (3) ◽

pp. 223-226

Author(s):

Eduardo Dias Wermelinger ◽

Adilson Benedito Almeida ◽

Ciro Villanova Benigno ◽

Aldo Pacheco Ferreira

Keyword(s):

Aedes Aegypti ◽

Vector Control ◽

Urban Environment ◽

Aedes Albopictus ◽

Surveillance Data ◽

Dengue Vector ◽

Tree Holes ◽

Dengue Control ◽

Dengue Vector Control

Esse estudo avaliou a produtividade dos criadouros de Aedes aegypti (Linnaeus) e Aedes albopictus (Skuse) no município de Parati através dos dados da vigilância entomológica obtidos pelos métodos preconizados pelo Programa Nacional de Controle da Dengue (PNCD). O maior número de pupas de A. aegypti foi coletado nos ralos (31%), garrafas e latas (23%); e com A. albopictus o maior número foi nas garrafas, latas (24%) e vasos de planta (21%). Do total de pupas obtidas, 84,3% e 79,3% das pupas de A. aegypti e A. albopictus respectivamente foram coletadas em pequenos reservatórios: garrafas, vasos de plantas, pneus, bromélias, oco de árvores e ralos. Essas produtividades contradizem a literatura e podem ser explicadas pelas limitações de acesso aos grandes reservatórios e falha na capacitação dos agentes. Esse estudo chama atenção para a importância que os pequenos reservatórios podem ter na densidade do vetor no meio urbano nacional e conclui que a metodologia de vigilância entomológica usada tem sido ineficaz para identificar os grandes e mais produtivos criadouros. Essa conclusão sugere que essa ineficácia pode ser um fator importante pelos insucessos no combate a dengue no Brasil. Evaluation of Breeding Productivity from Surveillance Data for Aedes aegypti (Linnaeus) and Aedes albopictus (Skuse) in Parati, RJ, Brazil Abstract. This study evaluated the pupa-productivity of the entomologic surveillance according methodology used by the official Program for Dengue Control in Brazil (PDCB) for Aedes aegypti (Linnaeus) and Aedes albopictus (Skuse) in Parati, RJ, Brazil. The highest number of A. aegypti pupae were found in drains (31%), bottles and cans (23%); and the highest number of A. albopictus pupae were found in bottles and cans (24%), and plant vases (21%). Of the total pupae identified 84.3% and 79.3% of A. aegypti and A. albopictus respectively were collected in small receptacles: bottles, plants vase, tires, bromeliads and tree holes. These productivities are not supported by literature and can be explained by the restrictions of access for the bigger receptacles and lack of training of the agents. The study points out the importance which the small receptacles can have on vector densities in urban environment despite of their productivity and conclude that the entomology surveillance methodology for dengue used in PDCB has no efficacy to identify the bigger and more productive receptacles. This conclusion suggests that this inefficacy can be an important factor for the failures on dengue vector control in Brazil.

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Pengetahuan, Sikap dan Riwayat Pengendalian Vektor di Daerah Endemis Demam BerdarahDengue Kota Bandung

ASPIRATOR - Journal of Vector-borne Disease Studies ◽

10.22435/asp.v10i1.16 ◽

2018 ◽

Vol 10 (1) ◽

pp. 49-56

Author(s):

Heni Prasetyowati ◽

Hubullah Fuadzy ◽

Endang Puji Astuti

Keyword(s):

Vector Control ◽

Control Group ◽

P Value ◽

Ratio Test ◽

Dengue Case ◽

Dengue Vector ◽

Mosquito Net ◽

And Control ◽

Breeding Place ◽

Dengue Vector Control

Dengue vector control needs active participation of community so it must be supported with goods dengue knowladge. The purpose of this research is to know the difference of knowladge and attitute in Bandung city community toward effort of dengue vector control in case and control group. This case-control study used ratio 1: 2. Number case of dengue is 261 and number of control is 522. Research location are ini health center area with hight dengue case ie Dago, Sekejati, Kopo, Cipamokolan. Responden ages grouped in range of 40-60 years, while the last education respondents are greduated from junior and senior high school. The result shows that there is significant different of knowladge between case and control (p-value 0.015) and no significant different in attitude variable (p-value 0,520). Vector control efford is different between two group in active eradication of mosquitoe breeding place (p-value 0.005) and the used of mosquito net (0.008). The odd ratio test result showed that knowladge variable (OR 1,410) and eradication of mosquitoe breeding place (OR1.719) are related to vector control efforts. Still needs enhance health promotion regarding vector control efforts in house hold environment as well as understanding of dengue, and optimizing program “one house one larva’s monitor

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Challenges and future perspective for dengue vector control in the Western Pacific Region

Western Pacific Surveillance and Response ◽

10.5365/wpsar.2010.1.1.012 ◽

2011 ◽

Vol 2 (2) ◽

pp. e1-e1 ◽

Cited By ~ 14

Author(s):

Moh Seng Chang ◽

Eva Maria Christophel ◽

Deyer Gopinath ◽

Rashid Md Abdur

Keyword(s):

Vector Control ◽

Western Pacific ◽

Future Perspective ◽

Pacific Region ◽

Dengue Vector ◽

Western Pacific Region ◽

The Western Pacific ◽

Dengue Vector Control

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Assessment of Aedes aegypti Pupal Productivity during the Dengue Vector Control Program in a Costal Urban Centre of São Paulo State, Brazil

Journal of Insects ◽

10.1155/2014/301083 ◽

2014 ◽

Vol 2014 ◽

pp. 1-9 ◽

Cited By ~ 4

Author(s):

Marylene de Brito Arduino

Keyword(s):

Vector Control ◽

Large City ◽

Control Program ◽

Sao Paulo ◽

São Paulo ◽

Dengue Vector ◽

Urban Centre ◽

Vector Control Program ◽

Productivity Indices ◽

Dengue Vector Control

The control of dengue relies on the elimination of vector breeding sites. This study identified the container categories most productive for A. aegypti within the framework of the São Paulo dengue vector control program (DVCP) in São Sebastião, a large city located on the state’s coast where dengue cases have occurred since 2001. Containers were inspected monthly for the occurrence of mosquito immature stages during two consecutive vector-breeding seasons in 2002–2004. Containers were classified by their material, use, and fixed or removable status. Pupal productivity differed significantly among container types, items made of metal and plastic, and boats being those with the highest relative contribution. Significant correlations between traditional indices of A. aegypti abundance (Container Index, House Index, and Breteau Index) and pupal productivity/demographic indices (Pupae/Container, Pupae/House, Pupae/ha, and Pupae/Person) ranged 0.56–0.65; correlations were not statistically significant for any combination involving the Pupae/Container index. The assessment of pupal productivity indices could be incorporated into the DVCP without any additional operational onus, allowing vector control managers to determine appropriate control actions targeting the most productive containers and sites. Further studies are needed to assess whether pupal productivity indices may be used as epidemiological indicators of risk of dengue transmission.

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