scholarly journals Field efficacy of guppies and pyriproxyfen (Sumilarv® 2MR) combined with community engagement on dengue vectors in Cambodia: a randomized controlled trial

2020 ◽  
Author(s):  
John Christian Hustedt ◽  
Dyna Doum ◽  
Vanney Keo ◽  
Sokha Ly ◽  
BunLeng Sam ◽  
...  
Keyword(s):  
Vector Control ◽  
Low Cost ◽  
Environmental Concerns ◽  
Community Based ◽  
Current Vector ◽  
Randomized Controlled ◽  
Biological Vector ◽  
Product Costs ◽  
Guppy Fish ◽  
Mosquito Infection

AbstractEvidence on the effectiveness of low-cost, sustainable biological vector control tools for Aedes mosquitoes is limited. Therefore, the purpose of this trial is to estimate the impact of guppy fish, in combination with the use of the larvicide Pyriproxyfen (Sumilarv® 2MR), and Communication for Behavioral Impact (COMBI) activities to reduce entomological indices in Cambodia.In this cluster randomized, controlled superiority trial, 30 clusters comprising of one or more villages each (with approximately 170 households) will be allocated, in a 1:1:1 ratio, to receive either a) three interventions (guppies, Sumilarv® 2MR, and COMBI activities), b) two interventions (guppies and COMBI activities), or c) control (standard vector control).Households were invited to participate, and entomology surveys among 40 randomly selected households per cluster were carried out quarterly. The primary outcome was the population density of adult female Aedes mosquitoes (i.e. number per house) trapped using adult resting collections. Secondary outcome measures include the House index, Container index, Breteau index, Pupae Per House, Pupae Per Person, mosquito infection rate, guppy fish coverage, Sumilarv® 2MR coverage, and percentage of respondents with knowledge about Aedes mosquitoes causing dengue. In the primary analysis, adult female Aedes density and mosquito infection rates was aggregated over follow-up time points to give a single rate per cluster. This was analyzed by negative binomial regression, yielding density ratios.The number of Aedes females was reduced by roughly half compared to the control in both the guppy and PPF arm (Density Ratio (DR)=0.54 [95% CI 0.34-0.85], p=0.0073), and guppy arm (DR=0.49 [95% CI 0.31-0.77], p=0.0021). The extremely low cost of including guppy rearing in community-based health structures along with the effectiveness demonstrated suggest guppies should be considered as a vector control tool as long as the benefits outweigh any potential environmental concerns. PPF was also highly accepted and preferred over current vector control tools used in Cambodia, however product costs and availability are still unknown.Author SummaryDengue is one of the most rapidly spreading mosquito-borne viral diseases in the world, is caused by bites of infected Aedes mosquitoes, and can sometimes lead to death. Cambodia has one of the highest per-capita incidence rates in Asia. Without a cure or routinely available efficacious vaccine, dengue control relies largely on reduction and avoidance of mosquitoes. In Cambodia, dengue mosquito control activities are focused on larviciding with temephos and pyrethroid based adulticide sprays to which Aedes have been shown to be increasingly resistant. This study was designed to evaluate novel biological vector control tools (guppy fish and a controlled release larvicidal matrix) utilizing an integrated vector management approach with community-based methods tailored to the local context. The results indicate that the tools resulted in a statistically significant reduction in immature and adult Aedes mosquito density. The interventions were accepted by and communities were willing to pay for them. The results suggest guppies are an ideal vector control tool as long as the benefits outweigh any potential environmental concerns. PPF was also highly accepted and preferred over current vector control tools used in Cambodia, however product costs and availability are still unknown.

scholarly journals Field Efficacy of Larvivorous Fish and Pyriproxyfen Combined with Community Engagement on Dengue Vectors in Cambodia: A Randomized Controlled Trial

2021 ◽  
Author(s):  
John Christian Hustedt ◽  
Dyna Doum ◽  
Vanney Keo ◽  
Sokha Ly ◽  
BunLeng Sam ◽  
...  
Keyword(s):  
Vector Control ◽  
Adult Female ◽  
Negative Binomial ◽  
Low Cost ◽  
Controlled Trial ◽  
Negative Binomial Regression ◽  
Primary Analysis ◽  
Larvivorous Fish ◽  
Randomized Controlled ◽  
The Impact

Evidence on the effectiveness of low-cost, sustainable biological vector control tools for Aedes mosquitoes is limited. Therefore, the purpose of this trial was to estimate the impact of guppy fish in combination with the larvicide pyriproxyfen (PPF) (Sumilarv® 2MR) and communication for behavioral impact (COMBI) activities to reduce entomological indices in Cambodia. In this cluster randomized, controlled superiority trial, 30 clusters comprised of one or more villages each was allocated in a 1:1:1 ratio to receive either 1) all three interventions (guppies, PPF, and COMBI), 2) two interventions (guppies and COMBI), or 3) control (standard vector control). Entomological surveys among 40 randomly selected households per cluster were carried out quarterly. The primary outcome was the population abundance of adult female Aedes mosquitoes trapped using adult resting collections. In the primary analysis, adult female Aedes abundance and mosquito infection rates was aggregated over follow-up time points to give a single rate per cluster. These data were analyzed by negative binomial regression, yielding abundance ratios (ARs). The number of Aedes females was reduced roughly by half compared with the control in both the guppy, PPF, and COMBI arm (AR = 0.54; 95% CI, 0.34–0.85; P = 0.0073); and the guppy and COMBI arm (AR = 0.49; 95% CI, 0.31–0.77; P = 0.0021). The effectiveness demonstrated and extremely low cost of including fish rearing in community-based health structures suggest they should be considered as a vector control tool as long as the benefits outweigh any potential environmental concerns. Sumilarv® 2MR was also highly accepted and preferred over current vector control tools used in Cambodia.

A Community-based Addiction Rehabilitation Electronic System to Improve Recovery Outcomes in Patients with Drug Use Disorder: Protocol for a Randomized Controlled Trial (Preprint)

2018 ◽  
Author(s):  
Zhe WANG ◽  
Shujuan CHEN ◽  
Junning CHEN ◽  
Chunfeng XU ◽  
Zhikang CHEN ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
Drug Use ◽  
Illicit Drug ◽  
Service Providers ◽  
Controlled Trial ◽  
Electronic System ◽  
Community Based ◽  
Randomized Controlled ◽  
Community Rehabilitation ◽  
Drug Use Disorder

BACKGROUND Relapse is very common in patients with illicit drug use disorder and contributes to a series of bad consequences that substantially impact their physical and social functions. Due to the limited existence of effective addiction treatment, the majority of patients with drug use disorder could not access help when needing. Mobile health (mHealth) offers a potential solution to improving recovery outcome for patients in community. OBJECTIVE This paper is a protocol for a randomized controlled trial (RCT) of a smart phone application called community-based addiction rehabilitation electronic system (CAREs). This interactive system consists of an APP for clients and a webpage for service providers, with the aim of teaching clients craving and emergency coping skills and helping service providers to improve their work efficiency and effectiveness in community. METHODS A randomized controlled trial (RCT) will be conducted. Sixty drug illicit users who are newly ordered to undergo community rehabilitation will be recruited from the community in Shanghai. Participants will be 1:1 randomly assigned to receive integrated community rehabilitation by using CAREs or only receiving routine community rehabilitation for 6 months. Corresponding anti-drug social workers will provide service and monitor their drug use behavior in accordance with the routine work-flow. Outcomes will be assessed at baseline and in the 6th month. The primary study outcome is the performance on illicit drug urine test which will be carried on regularly twice per week during the study period. Secondary study outcomes include longest duration of sustained abstinence, days that participants interact with anti-drug social workers, and the decrease rate of addiction-related issues severity index. RESULTS Recruitment is currently underway with the aim of recruiting 60 subjects with drug use disorder. Recruitment will continue until the end of 2018. CONCLUSIONS This is the first known trial of a smartphone-based psychotherapy program for improving recovery outcomes in illicit drug users in community. The study provides evidence for the feasibility and effectiveness of the "CAREs" system through comparing the results of the intervention group with the control group. This paper describes the design and methodology of the study. CLINICALTRIAL ClinicalTrials.gov NCT03451344, https://clinicaltrials.gov/ct2/show/NCT03451344

scholarly journals Effectiveness of Yoga Lifestyle on Lipid Metabolism in a Vulnerable Population—A Community Based Multicenter Randomized Controlled Trial

Medicines ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 37
Author(s):  
Raghuram Nagarathna ◽  
Saurabh Kumar ◽  
Akshay Anand ◽  
Ishwara N. Acharya ◽  
Amit Kumar Singh ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
High Risk ◽  
Controlled Trial ◽  
Density Lipoprotein ◽  
Lipid Profiles ◽  
Community Based ◽  
Randomized Controlled ◽  
Rural And Urban ◽  
Yoga Group ◽  
The Impact

Background: Dyslipidemia poses a high risk for cardiovascular disease and stroke in Type 2 diabetes (T2DM). There are no studies on the impact of a validated integrated yoga lifestyle protocol on lipid profiles in a high-risk diabetes population. Methods: Here, we report the results of lipid profile values of 11,254 (yoga 5932 and control 5322) adults (20–70 years) of both genders with high risk (≥60 on Indian diabetes risk score) for diabetes from a nationwide rural and urban community-based two group (yoga and conventional management) cluster randomized controlled trial. The yoga group practiced a validated integrated yoga lifestyle protocol (DYP) in nine day camps followed by daily one-hour practice. Biochemical profiling included glycated hemoglobin and lipid profiles before and after three months. Results: There was a significant difference between groups (p < 0.001 ANCOVA) with improved serum total cholesterol, triglycerides, low-density lipoprotein, and high-density lipoprotein in the yoga group compared to the control group. Further, the regulatory effect of yoga was noted with a significant decrease or increase in those with high or low values of lipids, respectively, with marginal or no change in those within the normal range. Conclusion: Yoga lifestyle improves and regulates (lowered if high, increased if low) the blood lipid levels in both genders of prediabetic and diabetic individuals in both rural and urban Indian communities.

scholarly journals Additional evidence on the efficacy of different Akirin vaccines assessed on Anopheles arabiensis (Diptera: Culicidae)

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Blaženka D. Letinić ◽  
Marinela Contreras ◽  
Yael Dahan-Moss ◽  
Ingrid Linnekugel ◽  
José de la Fuente ◽  
...  
Keyword(s):  
Vector Control ◽  
Aedes Albopictus ◽  
Malaria Vector ◽  
Vaccine Efficacy ◽  
Anopheles Arabiensis ◽  
Vaccine Development ◽  
Target Antigen ◽  
Control Methods ◽  
Protective Response ◽  
Current Vector

Abstract Background Anopheles arabiensis is an opportunistic malaria vector that rests and feeds outdoors, circumventing current indoor vector control methods. Furthermore, this vector will readily feed on both animals and humans. Targeting this vector while feeding on animals can provide an additional intervention for the current vector control activities. Previous results have displayed the efficacy of using Subolesin/Akirin ortholog vaccines for the control of multiple ectoparasite infestations. This made Akirin a potential antigen for vaccine development against An. arabiensis. Methods The efficacy of three antigens, namely recombinant Akirin from An. arabiensis, recombinant Akirin from Aedes albopictus, and recombinant Q38 (Akirin/Subolesin chimera) were evaluated as novel interventions for An. arabiensis vector control. Immunisation trials were conducted based on the concept that mosquitoes feeding on vaccinated balb/c mice would ingest antibodies specific to the target antigen. The antibodies would interact with the target antigen in the arthropod vector, subsequently disrupting its function. Results All three antigens successfully reduced An. arabiensis survival and reproductive capacities, with a vaccine efficacy of 68–73%. Conclusions These results were the first to show that hosts vaccinated with recombinant Akirin vaccines could develop a protective response against this outdoor malaria transmission vector, thus providing a step towards the development of a novel intervention for An. arabiensis vector control. Graphic Abstract

scholarly journals UTILIZING NUTRITION SERVICES PROVIDERS TO PREVENT LATE-LIFE SUICIDE: IMPLEMENTING A RANDOMIZED, CONTROLLED TRIAL

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S824-S825
Author(s):  
Matthew C Fullen ◽  
Mary Chase Mize ◽  
Laura R Shannonhouse
Keyword(s):  
Randomized Controlled Trial ◽  
Suicide Prevention ◽  
Controlled Trial ◽  
Late Life ◽  
Warning Signs ◽  
Community Based ◽  
Randomized Controlled ◽  
Nutrition Services ◽  
Suicide Prevention Training ◽  
The Impact

Abstract A challenge in preventing late-life suicide is identifying and responding to persons-at-risk prior to a suicide attempt. Distressed older adults are less likely to turn to a mental health professional, meaning that community-based prevention strategies are vitally important to comprehensive prevention frameworks. Due to their “natural helper” role, nutrition services (NS) volunteers may be well-positioned to identify suicide warning signs and respond accordingly. Unfortunately, there is a lack of systematic, empirically-tested evaluations of the effectiveness of community-based strategies to prevent older adult suicide, including the use of NS volunteers. To remedy this, the authors partnered with several home- and community-based service organizations to measure the impact of training nutrition services volunteers in suicide prevention skills. The authors will present preliminary findings from this federally-funded randomized, controlled trial of suicide prevention training (i.e., ASIST; safeTALK) on late-life suicidality and its correlates.

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