scholarly journals Community based interventional study on dengue awareness and vector control in a rural population in Ernakulam, Kerala

2017 ◽  
Vol 4 (4) ◽  
pp. 962 ◽  
Author(s):  
Leyanna Susan George ◽  
Aswathy S. ◽  
Nimitha Paul ◽  
K. Leelamoni
Keyword(s):  
Vector Control ◽  
Control Strategies ◽  
Behavioural Change ◽  
Intervention Strategy ◽  
Baseline Survey ◽  
Post Intervention ◽  
Change Communication ◽  
Community Acceptance ◽  
Attitude And Practice ◽  
Dengue Prevention

Background: Dengue fever is an acute infectious disease for which there are currently no specific drugs or effective vaccines available. Therefore its prevention & control solely rest on vector control strategies, for which behavioural change of the community is a requirement. Hence, the aim of our study was to implement a standardised behaviour change communication intervention strategy (BCC) and to measure its impact on the population in terms of awareness, attitude and practice regarding dengue and its vector control. Methods: This study was carried out in a ward in Njarackal Panchayath in Ernakulam district of Kerala. An initial baseline survey was conducted to assess the current awareness, attitude and practices of dengue & its vector control among the residents of the ward. This was followed by the implementation of standardized BCC Intervention strategy. A post intervention survey was carried out two months later to analyze its impact. Results: This BCC strategy resulted in increasing the awareness regarding dengue and its vector control even though it was found not to be statistically significant. However, the strategy was able to bring about a significant change in the attitude and practice of the people with regard to dengue prevention and control strategies. Conclusions: This BCC strategy was successful in this population due to community acceptance, however it requires constant reinforcement for its sustainability. 

scholarly journals Dengue Vector Control through Community Empowerment: Lessons Learned from a Community-Based Study in Yogyakarta, Indonesia

2019 ◽  
Vol 16 (6) ◽  
pp. 1013 ◽  
Author(s):  
Sulistyawati Sulistyawati ◽  
Fardhiasih Dwi Astuti ◽  
Sitti Rahmah Umniyati ◽  
Tri Tunggul Satoto ◽  
Lutfan Lazuardi ◽  
...  
Keyword(s):  
Vector Control ◽  
Best Practice ◽  
Knowledge Score ◽  
Community Empowerment ◽  
Lessons Learned ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Preventive Practices ◽  
Attitude And Practice ◽  
Dengue Prevention

Effort to control dengue transmission requires community participation to ensure its sustainability. We carried out a knowledge attitude and practice (KAP) survey of dengue prevention to inform the design of a vector control intervention. A cross-sectional survey was conducted in June–August 2014 among 521 households in two villages of Yogyakarta, Indonesia. Demographic characteristics and KAP questions were asked using a self-managed questionnaire. Knowledge, attitudes and practice scores were summarized for the population according to sex, age, occupation and education. The average knowledge score was rather poor—3.7 out of 8—although both attitude and practice scores were good: 25.5 out of 32 and 9.2 out of 11 respectively. The best knowledge within the different groups were found among women, the age group 30–44 years, people with a university degree and government employees. Best practice scores were found among retired people and housewives. There were several significant gaps in knowledge with respect to basic dengue symptoms, preventive practices and biting and breeding habits of the Aedes mosquito. In contrast, people’s practices were considered good, although many respondents failed to recognize outdoor containers as mosquito breeding sites. Accordingly, we developed a vector control card to support people’s container cleaning practices. The card was assessed for eight consecutive weeks in 2015, with pre-post larvae positive houses and containers as primary outcome measures. The use of control cards reached a low engagement of the community. Despite ongoing campaigns aiming to engage the community in dengue prevention, knowledge levels were meagre and adherence to taught routines poor in many societal groups. To increase motivation levels, bottom-up strategies are needed to involve all community members in dengue control, not only those that already comply with best practices.

scholarly journals Knowledge, attitude and practice on dengue prevention and dengue seroprevalence in a dengue hotspot in Malaysia: A cross-sectional study

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Sivaneswari Selvarajoo ◽  
Jonathan Wee Kent Liew ◽  
Wing Tan ◽  
Xin Ying Lim ◽  
Wardha F. Refai ◽  
...  
Keyword(s):  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Attitude And Practice ◽  
Dengue Prevention ◽  
Knowledge Attitude And Practice

scholarly journals High insecticide resistance mediated by different mechanisms in Culex quinquefasciatus populations from the city of Yaoundé, Cameroon

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Abdou Talipouo ◽  
Konstantinos Mavridis ◽  
Elysée Nchoutpouen ◽  
Borel Djiappi-Tchamen ◽  
Emmanouil Alexandros Fotakis ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
Vector Control ◽  
High Resistance ◽  
Culex Quinquefasciatus ◽  
Control Strategies ◽  
Cuticular Hydrocarbon ◽  
Control Measures ◽  
High Frequencies ◽  
The City ◽  
Integrated Vector Control

AbstractCulex mosquitoes particularly Culex quinquefasciatus are important arboviral and filariasis vectors, however despite this important epidemiological role, there is still a paucity of data on their bionomics. The present study was undertaken to assess the insecticide resistance status of Cx. quinquefasciatus populations from four districts of Yaoundé (Cameroon). All Culex quinquefasciatus populations except one displayed high resistance to bendiocarb and malathion with mortalities ranging from 0 to 89% while high resistance intensity against both permethrin and deltamethrin was recorded. Molecular analyses revealed high frequencies of the ACE-1 G119S mutation (ranging from 0 to 33%) and kdr L1014F allele (ranging from 55 to 74%) in all Cx. quinquefasciatus populations. Significant overexpression was detected for cytochrome P450s genes CYP6AA7 and CYP6Z10, as well as for Esterase A and Esterase B genes. The total cuticular hydrocarbon content, a proxy of cuticular resistance, was significantly increased (compared to the S-lab strain) in one population. The study confirms strong insecticide resistance mediated by different mechanisms in Cx. quinquefasciatus populations from the city of Yaoundé. The expansion of insecticide resistance in Culex populations could affect the effectiveness of current vector control measures and stress the need for the implementation of integrated vector control strategies in urban settings.

scholarly journals Predicting Aedes aegypti infestation using landscape and thermal features

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Camila Lorenz ◽  
Marcia C. Castro ◽  
Patricia M. P. Trindade ◽  
Maurício L. Nogueira ◽  
Mariana de Oliveira Lage ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Aedes Aegypti ◽  
Vector Control ◽  
Land Surface ◽  
Urban Areas ◽  
Negative Binomial ◽  
Control Strategies ◽  
Winter Season ◽  
Landsat 8 ◽  
Thermal Features

AbstractIdentifying Aedes aegypti breeding hotspots in urban areas is crucial for the design of effective vector control strategies. Remote sensing techniques offer valuable tools for mapping habitat suitability. In this study, we evaluated the association between urban landscape, thermal features, and mosquito infestations. Entomological surveys were conducted between 2016 and 2019 in Vila Toninho, a neighborhood of São José do Rio Preto, São Paulo, Brazil, in which the numbers of adult female Ae. aegypti were recorded monthly and grouped by season for three years. We used data from 2016 to 2018 to build the model and data from summer of 2019 to validate it. WorldView-3 satellite images were used to extract land cover classes, and land surface temperature data were obtained using the Landsat-8 Thermal Infrared Sensor (TIRS). A multilevel negative binomial model was fitted to the data, which showed that the winter season has the greatest influence on decreases in mosquito abundance. Green areas and pavements were negatively associated, and a higher cover of asbestos roofs and exposed soil was positively associated with the presence of adult females. These features are related to socio-economic factors but also provide favorable breeding conditions for mosquitos. The application of remote sensing technologies has significant potential for optimizing vector control strategies, future mosquito suppression, and outbreak prediction.

scholarly journals Dengue Prevention and 35 Years of Vector Control in Singapore

2006 ◽  
Vol 12 (6) ◽  
pp. 887-893 ◽  
Author(s):  
Eng-Eong Ooi ◽  
Kee-Tai Goh ◽  
Duane J. Gubler
Keyword(s):  
Vector Control ◽  
Dengue Prevention

Examining Knowledge, Attitude and Practice Towards Food Labels Among Consumers in Enugu State, Nigeria – A Baseline Survey

2020 ◽  
Vol 3 (4) ◽  
pp. 221
Author(s):  
Felicia Nwanne Monye ◽  
Nkoli Nwakego Ezumah ◽  
Jane Ani ◽  
Herbert Umezuruike ◽  
Festus Okechukwu Ukwueze ◽  
...  
Keyword(s):  
Baseline Survey ◽  
Food Labels ◽  
Attitude And Practice ◽  
Enugu State ◽  
Knowledge Attitude And Practice

scholarly journals Optimal Control of a Dengue-Dengvaxia Model: Comparison Between Vaccination and Vector Control

2021 ◽  
Vol 9 (1) ◽  
pp. 198-212
Author(s):  
Cheryl Q. Mentuda
Keyword(s):  
Optimal Control ◽  
Vector Control ◽  
Basic Reproduction Number ◽  
Human Population ◽  
Model Comparison ◽  
Reproduction Number ◽  
Control Strategies ◽  
Minimum Principle ◽  
Transmitted Disease ◽  
The Basic Reproduction Number

Abstract Dengue is the most common mosquito-borne viral infection transmitted disease. It is due to the four types of viruses (DENV-1, DENV-2, DENV-3, DENV-4), which transmit through the bite of infected Aedes aegypti and Aedes albopictus female mosquitoes during the daytime. The first globally commercialized vaccine is Dengvaxia, also known as the CYD-TDV vaccine, manufactured by Sanofi Pasteur. This paper presents a Ross-type epidemic model to describe the vaccine interaction between humans and mosquitoes using an entomological mosquito growth population and constant human population. After establishing the basic reproduction number ℛ0, we present three control strategies: vaccination, vector control, and the combination of vaccination and vector control. We use Pontryagin’s minimum principle to characterize optimal control and apply numerical simulations to determine which strategies best suit each compartment. Results show that vector control requires shorter time applications in minimizing mosquito populations. Whereas vaccinating the primary susceptible human population requires a shorter time compared to the secondary susceptible human.

scholarly journals Public health response and lessons learned from the 2014 chikungunya epidemic in Grenada

2017 ◽  
Vol 41 ◽  
pp. 1 ◽  
Author(s):  
Martin S Forde ◽  
Francis Martin ◽  
George Mitchell ◽  
Satesh Bidaisee
Keyword(s):  
Health Care ◽  
Vector Control ◽  
Control Strategies ◽  
Lessons Learned ◽  
Epidemiological Surveillance ◽  
Mosquito Vector ◽  
Public Health Response ◽  
Island State ◽  
Health Response ◽  
Multiple Challenges

In June 2014, the first cases of chikungunya virus (CHIKV) were diagnosed on the island of Carriacou, part of the tri-island state of Grenada. In the three months that followed, CHIKV spread rapidly, with conservative estimates of the population infected of at least 60%. Multiple challenges were encountered in the battle to manage the spread and impact of this high–attack rate virus, including 1) limited indigenous laboratory diagnostic capabilities; 2) an under-resourced health care system; 3) a skeptical general public, hesitant to accept facts about the origin and mode of transmission of the new virus; and 4) resistance to the vector control strategies used. Lessons learned from the outbreak included the need for 1) a robust and reliable epidemiological surveillance system; 2) effective strategies for communicating with the general population; 3) exploration of other methods of mosquito vector control; and 4) a careful review of all health care policies and protocols to ensure that effective, organized responses are triggered when an infectious outbreak occurs.

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