Alison Krentel

Dr. Alison Krentel


Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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3 November 2016 in PLOS Neglected Tropical Diseases
Verified
Journal Article
Open access
PDF file
AKAlison Krentel
Alison Krentel
RDRita Damayanti
Rita Damayanti
CTChristiana Titaley
Christiana Titaley
NSNugroho Suharno
Nugroho Suharno
MBMark Bradley
Mark Bradley
TLTimothy Lynam
Timothy Lynam
As the Global Programme to Eliminate Lymphatic Filariasis (LF) approaches its 2020 goal, an increasing number of districts will enter the endgame phase where drug coverage rates from mass drug administration (MDA) are used to assess whether MDA can be stopped. As reported, the gap between reported and actual drug coverage in some contexts has overestimated the true rates, thus causing premature administration of transmission assessment surveys (TAS) that detect ongoing LF transmission. In these cases, districts must continue with additional rounds of MDA. Two districts in Indonesia (Agam District, Depok City) fit this criteria—one had not met the pre-TAS criteria and the other, had not passed the TAS criteria. In both cases, the district health teams needed insight into their drug delivery programs in order to improve drug coverage in the subsequent MDA rounds. To inform the subsequent MDA round, a micronarrative survey tool was developed to capture community members’ experience with MDA and the social realm where drug delivery and compliance occur. A baseline survey was implemented after the 2013 MDA in endemic communities in both districts using the EPI sampling criteria (n = 806). Compliance in the last MDA was associated with perceived importance of the LF drugs for health (p<0.001); perceived safety of the LF drugs (p<0.001) and knowing someone in the household has complied (p<0.001). Results indicated that specialized messages were needed to reach women and younger men. Both districts used these recommendations to implement changes to their MDA without additional financial support. An endline survey was performed after the 2014 MDA using the same sampling criteria (n = 811). Reported compliance in the last MDA improved in both districts from 57% to 77% (p<0.05). Those who reported having ever taken the LF drug rose from 79% to 90% (p<0.001) in both sites. Micronarrative surveys were shown to be a valid and effective tool to detect operational issues within MDA programs. District health staff felt ownership of the results, implementing feasible changes to their programs that resulted in significant improvements to coverage and compliance in the subsequent MDA. This kind of implementation research using a micronarrative survey tool could benefit underperforming MDA programs as well as other disease control programs where a deeper understanding is needed to improve healthcare delivery. This research describes the process used to assist two districts endemic for lymphatic filariasis (LF) in Indonesia to better understand the reasons why their LF elimination programs have had suboptimal results. A novel survey design was used to collect stories about people’s direct experiences with mass drug administration (MDA) for LF. These questionnaires also explored the reasons community members took or did not take the LF drugs. Following MDA in 2013, two baseline surveys in endemic communities provided insight into the district MDA programs. Together with district health officials, feasible recommendations were provided before the next MDA round in 2014. Uptake of these recommendations by the districts was high, although no additional funding was made available for programmatic changes. As a result, both districts reported significant improvements in their MDA coverage and compliance rates after the endline surveys were completed in 2015. This demonstrated the utility of the survey tool and process to impact change and improvement in MDA programs.

6 December 2017 in PLOS Neglected Tropical Diseases
Verified
Journal Article
Open access
PDF file
AKAlison Krentel
Alison Krentel
MGMargaret Gyapong
Margaret Gyapong
SMShruti Mallya
Shruti Mallya
NBNana Yaa Boadu
Nana Yaa Boadu
MAMary Amuyunzu-Nyamongo
Mary Amuyunzu-Nyamongo
DMDeborah A. McFarland
Deborah A. McFarland
Community drug distributors or neglected tropical disease (NTD) volunteers have played a crucial role in ensuring the success of mass drug administration (MDA) programs using preventive chemotherapy (PC) for lymphatic filariasis, onchocerciasis, schistosomiasis, trachoma and soil transmitted helminths. In recent years however, a noticeable decline in motivation of some of these volunteers has been perceived, potentially negatively impacting the success of these programs. Potential hypotheses for this change in motivation include the long duration of many MDA programs, the change in sociocultural environments as well as the changes to the programs over time. This literature review identifies factors that affect NTD volunteer performance and motivation, which may be used to influence and improve future programming. A systematic search was conducted to identify studies published between January 1995 and September 2016 that investigate factors pertaining to volunteer motivation and performance in NTD drug distribution programs. Searches from several databases and grey literature yielded 400 records, of which 28 articles from 10 countries met the inclusion criteria. Quality assessment of studies was performed using the Critical Appraisal Skills Programme(CASP) checklist. Data pertaining to motivation, performance, retention and satisfaction was extracted and examined for themes. Recurring themes in the literature included monetary and material incentives, intrinsic motivation, gender, cost to participate, and health systems and community support. Of these, community support and the health system were found to be particularly impactful. Very few studies were found to explicitly look at novel incentives for volunteers and very few studies have considered the out of pocket and opportunity costs that NTD volunteers bear carrying out their tasks. There is currently great interest in incorporating more attractive incentive schemes for NTD volunteers. However, our results show that the important challenges that volunteers face (cultural, health systems, financial and community related) may have less to do with financial incentives and may actually have a larger impact on their motivation than has previously been understood. Further integration of NTD programs into existing health systems is expected to improve the NTD volunteer working environment. Relevant community engagement related to the MDA program should also provide the supportive environment needed in the community to support NTD volunteers. Programs need to consider these issues to improve working conditions for NTD volunteers. Volunteer community drug distributors play an important role in preventing and treating many neglected tropical diseases (NTD) through their participation in mass drug administration (MDA) programs for lymphatic filariasis (elephantiasis), onchocerciasis (river blindness), soil transmitted helminths (intestinal worms), trachoma and schistosomiasis (snail fever). Their role is to carry out a census, inform and educate community members, distribute medication, fill out reports and monitor for adverse events. These volunteers work tirelessly in their communities with minimal incentives. Increasingly, as the 2020 elimination goals for NTDs approach, there is concern that we need to better motivate these individuals and prevent attrition. In order to better understand what motivates volunteer community drug distributors, a review of the literature was carried out. Recurring themes in the literature included monetary and material incentives, intrinsic motivation, gender, cost to participate, and health systems and community support. Of these, community support and the health system were found to be particularly impactful. Our results show that better community engagement and integration into the health system will help to maximize retention of this volunteer workforce.

3 March 2021 in PLOS Neglected Tropical Diseases
Verified
Journal Article
Open access
PDF file
AKAlison Krentel
Alison Krentel
NBNandha Basker
Nandha Basker
MRMadsen Beau de Rochars
Madsen Beau de Rochars
JBJoshua Bogus
Joshua Bogus
DDDaniel Dilliott
Daniel Dilliott
GWGary J. Weil
Gary J. Weil
Background: Many countries will not reach elimination targets for lymphatic filariasis in 2020 using the two-drug treatment regimen (diethylcarbamazine citrate [DEC] and albendazole [DA]). A cluster-randomized, community-based safety study performed in Fiji, Haiti, India, Indonesia and Papua New Guinea tested the safety and efficacy of a new regimen of ivermectin, DEC and albendazole (IDA). Methodology/Principal findings: To assess acceptability of IDA and DA, a mixed methods study was embedded within this community-based safety study. The study objective was to assess the acceptability of IDA versus DA. Community surveys were performed in each country with randomly selected participants (>14 years) from the safety study participant list in both DA and IDA arms. In depth interviews (IDI) and focus group discussions (FGD) assessed acceptability-related themes. In 1919 individuals, distribution of sex, microfilariae (Mf) presence and circulating filarial antigenemia (CFA), adverse events (AE) and age were similar across arms. A composite acceptability score summed the values from nine indicators (range 9–36). The median (22.5) score indicated threshold of acceptability. There was no difference in scores for IDA and DA regimens. Mean acceptability scores across both treatment arms were: Fiji 33.7 (95% CI: 33.1–34.3); Papua New Guinea 32.9 (95% CI: 31.9–33.8); Indonesia 30.6 (95% CI: 29.8–31.3); Haiti 28.6 (95% CI: 27.8–29.4); India 26.8 (95% CI: 25.6–28) (P<0.001). AE, Mf or CFA were not associated with acceptability. Qualitative research (27 FGD; 42 IDI) highlighted professionalism and appreciation for AE support. No major concerns were detected about number of tablets. Increased uptake of LF treatment by individuals who had never complied with MDA was observed. Conclusions/Significance: IDA and DA regimens for LF elimination were highly and equally acceptable in individuals participating in the community-based safety study in Fiji, Haiti, India, Indonesia, and Papua New Guinea. Country variation in acceptability was significant. Acceptability of the professionalism of the treatment delivery was highlighted.

11 March 2022 in PLOS Neglected Tropical Diseases
Verified
Journal Article
Open access
PDF file
EMElke Mitchell
Elke Mitchell
AKAngela Kelly-Hanku
Angela Kelly-Hanku
AKAlison Krentel
Alison Krentel
LRLucia Romani
Lucia Romani
LRLeanne J. Robinson
Leanne J. Robinson
SBStephen Bell
Stephen Bell
Background: Preventative chemotherapy and mass drug administration have been identified as effective strategies for the prevention, treatment, control and elimination of several NTDs in the Asia-Pacific region. Qualitative research can provide in-depth insight into the social dynamics and processes underlying effective implementation of and adherence to mass drug administration programs. This scoping review examines published qualitative literature to examine factors influencing community perceptions and acceptability of mass drug administration approaches to control NTDs in the Asia-Pacific region.Methodology: Twenty-four peer reviewed published papers reporting qualitative data from community members and stakeholders engaged in the implementation of mass drug administration programs were identified as eligible for inclusion.Findings: This systematic scoping review presents available data from studies focussing on lymphatic filariasis, soil-transmitted helminths and scabies in eight national settings (India, Indonesia, Philippines, Bangladesh, Laos, American Samoa, Papua New Guinea, Fiji). The review highlights the profoundly social nature of individual, interpersonal and institutional influences on community perceptions of willingness to participate in mass drug administration programs for control of neglected tropical diseases (NTD). Future NTD research and control efforts would benefit from a stronger qualitative social science lens to mass drug administration implementation, a commitment to understanding and addressing the social and structural determinants of NTDs and NTD control in complex settings, and efforts to engage local communities as equal partners and experts in the co-design of mass drug administration and other efforts to prevent, treat, control and eliminate NTDs.Conclusion: For many countries in the Asia-Pacific region, the “low hanging fruit has been picked” in terms of where mass drug administration has worked and transmission has been stopped. The settings that remain–such as remote areas of Fiji and Papua New Guinea, or large, highly populated, multi-cultural urban settings in India and Indonesia–present huge challenges going forward.

20 September 2021 in PLOS Neglected Tropical Diseases
Verified
Journal Article
Open access
PDF file
RNReza A. Niles
Reza A. Niles
CTCharles R. Thickstun
Charles R. Thickstun
HCHorace Cox
Horace Cox
DDDaniel Dilliott
Daniel Dilliott
CBClara R. Burgert-Brucker
Clara R. Burgert-Brucker
AKAlison Krentel
Alison Krentel
Background: Guyana is one of four countries in the Latin American Region where lymphatic filariasis (LF) remains endemic. In preparation for the introduction of a new triple drug therapy regimen (ivermectin, diethylcarbamazine, and albendazole (IDA)) in 2019, an acceptability study was embedded within sentinel site mapping in four regions to assess mass drug administration (MDA) coverage and compliance, acceptability, and perceptions about treatment and disease. The results from this survey would inform the rollout of IDA in Guyana in 2019. Methods: Data collection for the study occurred in August 2019, using a validated questionnaire administered by trained enumerators. Across all regions, a total of 1,248 participants were sampled by the Filarial Mapping team. Four-hundred and fifty-one participants aged over 18 years were randomly selected for participation in an expanded acceptability questionnaire. All data were captured in Secure Data Kit (SDK). Results: Acceptability was measured using a mean acceptability score. Unadjusted mean scores ranged from 24.6 to 29.3, with 22.5 as the threshold of acceptability. Regional variation occurred across many indicators of interest: self-rated understanding about LF, mechanisms of LF transmission, LF drug safety and history of treatment during MDA. Region IV (Georgetown) recorded higher knowledge about LF, but lower compliance and acceptability. Number of pills was not perceived as a concern. Conclusion: Acceptability of MDA was good across all four regions under study. Results from this study set a baseline level for key indicators and acceptability, from which the acceptability of IDA can be measured. Regional variations across indicators suggest that localized approaches should be considered for social mobilization and MDA delivery to capture these contextual differences.

7 June 2018 in PLOS Neglected Tropical Diseases
Verified
Journal Article
Open access
PDF file
AKAlison Krentel
Alison Krentel
MGMargaret Gyapong
Margaret Gyapong
OOOlumide Ogundahunsi
Olumide Ogundahunsi
MAMary Amuyunzu-Nyamongo
Mary Amuyunzu-Nyamongo
DMDeborah A McFarland
Deborah A McFarland