East New Britain Province Monitoring & Evaluation

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

12930 participants

Study Classification

OBSERVATIONAL

Study Start Date

2019-09-17

Study Completion Date

2024-01-01

Brief Summary

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While tremendous progress towards elimination of lymphatic filariasis (LF) has been made in the 20 years since the 1997 Fiftieth World Health Assembly, it is unlikely the goal of eliminating LF as a public health problem by 2020 will be achieved. As of 2016, it was estimated that 856 million people are still living in areas with ongoing transmission of LF and require mass drug administration (MDA) \[1\]. Of the 52 countries that remain endemic and require MDA, 22 (42%) have not started MDA in all endemic implementation units (IUs) \[1\]. In addition, several countries have found that, despite completing the required number of treatment rounds, the response to the present MDA regimen has been suboptimal in some IUs, requiring additional rounds of MDA.

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Detailed Description

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Although the current two-drug regimen has been successful in many places, it is clear that augmented treatment regimens, other alternative strategies, or both are needed to accelerate global elimination. Fortunately, recent scientific studies, led by the DOLF project at Washington University in St. Louis, found that a three-drug regimen, using all three of the medicines typically delivered as a standard two-drug regimen to prevent LF (ivermectin + albendazole or diethycarbamazine + albendazole), is dramatically more effective for achieving sustained clearance of microfilariae from infected persons \[2\]. WHO conducted a rigorous and thorough review process of data from safety and efficacy trials of the triple drug regimen. In November, 2017, WHO endorsed and provided updated treatment guidelines that endorsed the use of IDA as a MDA regimen for LF elimination programs \[3\]. Following WHO's formal approval and release of the alternative treatment guidelines, in late November Merck \& Co. committed to increase its Mectizan donation by 100 million treatments annually to eliminate LF \[4\], making the IDA regimen financially feasible for countries to adopt.

According to the recently published guidelines, WHO recommends the use of annual IDA in settings where onchocerciasis is not co-endemic with LF in districts have not yet started MDA, in areas that have received fewer than 4 effective rounds of MDA, and in areas where MDA results have been suboptimal. These guidelines call for the current epidemiological criteria (\<1% microfilaremia or \<2% antigenemia) to be applied to sentinel and spot check sites to determine whether the IU is eligible to proceed with the transmission assessment survey (TAS) and for the TAS to be used to base MDA-stopping decisions \[3\]. While the TAS has proven to be an effective tool for basing stopping decisions under the standard two-drug regimens, it is unclear whether the target age group (6-7 year olds) and epidemiologic target (\<2% antigenemia in areas with W. bancrofti and \<2% BmR1 antibodies in areas with Brugia spp. infections) are appropriate when IDA is used. Because IDA will result in an accelerated interruption of transmission and because the effects of this regimen on adult worms are not yet fully understood, it is possible that new target populations, infection indicators, sampling strategies, and/or thresholds will be required to determine when it is safe to stop IDA.

The purpose of this protocol is to describe the operational research (OR) that is necessary to develop a set of recommendations for WHO to consider regarding appropriate monitoring and evaluation (M\&E) strategies for countries implementing IDA. Generating the information necessary to establish robust M\&E guidelines requires a significant OR effort to ensure that all relevant information is collected, innovative strategies are considered, and that the ultimate recommendations are supported by evidence across multiple countries. It is important to emphasize that the study design described in this protocol is not what would be recommended of all countries implementing IDA. This protocol is for OR purposes only, with the goal that study findings will lead to a simplified M\&E framework that is feasible for use by national LF elimination programs.

Conditions

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Lymphatic Filariasis Elimination by Mass Drug Administration Monitoring and Evaluation of Mass Drug Administration for Lymphatic Filariasis Acceptability of Mass Drug Administration for Lymphatic Filariasis

Study Design

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Observational Model Type

ECOLOGIC_OR_COMMUNITY

Study Time Perspective

PROSPECTIVE

Interventions

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Observational

Mass Drug Administration with a single co-administered dose of Ivermectin, DEC and Albendazole performed by Provincial and National Health Departments annually for two years

Intervention Type OTHER