Neglected tropical diseases and disability-what is the link?

Spatio-temporal analysis of American Tegumentary Leishmaniasis incidences in the Brazilian state of Amazonas: 2011 to 2022

This study aimed to conduct a spatio-temporal analysis of tegumentary leishmaniasis occurrences in the Amazonas state, Brazil. An ecological study encompassing time series and spatial analysis was performed, exploring the geographic distribution and temporal trends of American Tegumentary Leishmaniasis (ATL) in Amazonas between 2011 and 2022. Secondary data extracted from the Department of Informatics of the Unified Health System (DATASUS) were utilized for this analysis. The study evaluated the relationship between disease cases and environmental/climatic variables (deforestation, temperature, precipitation, and relative humidity). Over the study period, 19,730 cases of tegumentary leishmaniasis were recorded, averaging an incidence of 41.4/100,000 inhabitants across the 62 municipalities of Amazonas state. Disease intensity varied with seasons. Generally, Amazonas state displayed a declining trend in ATL cases. However, certain municipalities, notably Rio Preto da Eva and Presidente Figueiredo, exhibited high incidence rates, while Canutama, Envira, Eirunepé, and Pauini municipalities demand closer attention due to their demonstrated increasing temporal trend of ATL cases. The analysis indicated a correlation between the number of ATL cases reported and relative humidity as well as precipitation. These findings underscore the significance of tegumentary leishmaniasis as a public health issue in the region and emphasize the necessity for public initiatives aimed at preventing this endemic illness.

A pilot study to address the mental health of persons living with lymphatic filariasis in Léogâne, Haiti: Implementing a chronic disease self-management program using a stepped-wedge cluster design

BACKGROUND

Neglected tropical diseases (NTDs) inflict significant comorbid disability on the most vulnerable communities; yet interventions targeting the mental health of affected communities are lacking. A pilot study to assess the effectiveness of a chronic disease self-management program (CDSMP) was introduced to lymphatic filariasis peer support groups in Léogâne, Haiti.

METHODS

Using a closed-cohort stepped-wedge cluster trial design, Hope Clubs were assigned into Arm 1 (n=118 members) and Arm 2 (n=92). Household surveys, measuring self-rated health, depression, disease self-efficacy, perceived social support, and quality of life, were conducted at baseline (before CDSMP); midpoint (after Arm 1/before Arm 2 completed CDSMP); and endpoint (after CDSMP). Non-Hope Club member patients (n=74) were evaluated at baseline for comparison.

RESULTS

Fifty percent of Hope Club members (Arm 1: 48.3%, Arm 2: 52.2%) screened positive for depression at baseline, compared with 36.5% of non-Hope Club members. No statistically significant differences were found in outcome measures between intervention observation periods. At endpoint, depressive illness reduced to 28.7% (Arm 1) and 27.6% (Arm 2).

CONCLUSIONS

The intervention was feasible to integrate into Hope Clubs, showed overall positive effects and reduced depressive symptoms. More studies are needed to evaluate the efficacy of implementing CDSMP in the NTD context.

CONTEXTE

Les maladies tropicales négligées (MTN) infligent d'importantes incapacités comorbides aux communautés les plus vulnérables; pourtant, les interventions ciblant la santé mentale des communautés affectées font défaut. Une étude pilote visant à évaluer l'efficacité d'un programme d'autogestion des maladies chroniques (CDSMP) a été introduite dans des groupes de soutien par les pairs pour la filariose lymphatique à Léogâne, en Haïti.

MÉTHODES

Dans le cadre d'un essai en grappe à cohorte fermée, les clubs Hope ont été répartis entre le bras 1 (n=118 membres) et le bras 2 (n=92). Des enquêtes auprès des ménages, mesurant l'auto-évaluation de la santé, la dépression, l'auto-efficacité face à la maladie, le soutien social perçu et la qualité de vie, ont été menées au départ (avant le CDSMP), à mi-parcours (après que le bras 1 / avant que le bras 2 ait terminé le CDSMP) et à la fin (après le CDSMP). Les patients non membres du Hope Club (n=74) ont été évalués au début de l'étude à des fins de comparaison.

RÉSULTATS

Cinquante pourcent des membres du Hope Club (bras 1 : 48,3%, bras 2 : 52,2%) ont été dépistés positifs pour la dépression au début de l'étude, contre 36,5% des non-membres du Hope Club. Aucune différence statistiquement significative n'a été constatée dans les mesures des résultats entre les périodes d'observation de l'intervention. À la fin de l'étude, la maladie dépressive était réduite à 28,7% (bras 1) et 27,6% (bras 2).

CONCLUSIONS

L'intervention a pu être intégrée dans les clubs Hope, elle a montré des effets globalement positifs et a permis de réduire les symptômes dépressifs. D'autres études sont nécessaires pour évaluer l'efficacité de la mise en œuvre du CDSMP dans le contexte des MTD.

ANTECEDENTES

Las enfermedades tropicales desatendidas (ETDs) infligen una importante discapacidad comórbida a las comunidades más vulnerables; sin embargo, faltan intervenciones dirigidas a la salud mental de las comunidades afectadas. Se introdujo un estudio piloto para evaluar la eficacia de un programa de autogestión de enfermedades crónicas (CDSMP, por sus siglas en inglés) en grupos de apoyo entre pares de filariasis linfática en Léogâne, Haití.

MÉTODOS

Utilizando un diseño de ensayo por conglomerados de cohortes cerradas escalonadas, los Clubes Esperanza fueron asignados al Grupo 1 (n=118 miembros) y al Grupo 2 (n=92). Se realizaron encuestas en los hogares para medir la autoevaluación de la salud, la depresión, la autoeficacia frente a la enfermedad, el apoyo social percibido y la calidad de vida en la línea de base (antes del CDSMP), en el punto medio (después de que el Grupo 1/antes de que el Grupo 2 completara el CDSMP) y en el punto final (después del CDSMP). Los pacientes que no pertenecían al Club Esperanza (n=74) fueron evaluados al inicio del estudio a modo de comparación.

RESULTADOS

El 50% de los miembros del Club Esperanza (Grupo 1: 48,3%, Grupo 2: 52,2%) dieron positivo en depresión al inicio del estudio, en comparación con el 36,5% de los no miembros del Club Esperanza. No se encontraron diferencias estadísticamente significativas en las medidas de resultado entre los periodos de observación de la intervención. Al final, la enfermedad depresiva se redujo al 28,7% (Grupo 1) y al 27,6% (Grupo 2).

CONCLUSIONES

La intervención fue factible de integrar en los Clubes Esperanza, mostróefectos positivos generales y redujo los síntomas depresivos. Se necesitan más estudios para evaluar la eficacia de la aplicación del CDSMP en el contexto de las ETD.

Coverage of preventive measures and surveillance for neglected tropical diseases in hard-to-reach communities in Ghana

BACKGROUND

Neglected tropical diseases (NTDs) are a major public health burden which mainly affects poor populations living in tropical environments and hard-to-reach areas. The study sought to examine coverage of preventive efforts, and case surveillance for NTDs in hard-to-reach communities in Ghana.

METHODS

The study investigated treatment efforts for lymphatic filariasis (LF), and onchocerciasis and schistosomiasis/soil transmitted helminths (SCH/STH) at household level, in difficult-to-access communities in Ghana. A total of 621 households were sampled from 6 communities in the Western, Oti and Greater Accra regions.

RESULTS

Over 95% of the households surveyed were covered under mass drug administration (MDA) campaigns for lymphatic filariasis (LF) and onchocerciasis. More than 80% of households had received at least two visits by community drug distributors under the MDA campaigns in the last two years preceding the study. In addition, over 90% of households in the LF and onchocerciasis endemic communities had at least one member using anthelminthic medications under the MDA campaigns in the 12 months preceding the study. However, households where no member had taken anthelminthic medications in 12 months preceding the study were over 6 times likely to have someone in the household with LF.

CONCLUSIONS

This study determined that SCH/STH, LF and onchocerciasis are of serious public health concern in some communities in Ghana. There is an urgent need for holistic practical disease control plan involving both financial and community support to ensure total control of NTDs in difficult-to-access communities is achieved.

Disability assessment among persons with epilepsy in Mahenge, an onchocerciasis-endemic area in Tanzania: A cross-sectional study

BACKGROUND

A high prevalence of epilepsy has been observed in the onchocerciasis-endemic focus of Mahenge, Tanzania. This study sought to assess the degree of disability experienced by persons with epilepsy (PWE) in Mahenge and identify associations with sociodemographic and clinical features.

METHOD

This cross-sectional study was conducted in Mahenge, Tanzania, between February and July 2020. PWE were recruited from the Mahenge epilepsy clinic and four neighbouring rural villages (Mdindo, Mzogezi, Mzelezi and Sali). Data were collected using the 36-item version of the World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0) questionnaire for adults. For children aged 5-17 years, we used the Module on Child Functioning developed by UNICEF and the Washington Group. Questionnaires were administered by trained research assistants. Descriptive statistics were performed, and multivariable analyses (gamma and logistic regressions) were conducted.

RESULTS

A total of 321 adults (45.5% males) and 48 children (55.3% males) with epilepsy participated. The overall median WHODAS 2.0 score was 4.8% (IQR: 0.9-18.9). The most affected disability domain was 'participating in the society' (median score: 12.5%, IQR: 0-29.2). Fifteen (31.3%) of the children with epilepsy had a disability in at least one domain of the child functioning module, with the 'accepting change' domain harbouring the highest proportion of disabled children (12.5%). Higher seizure frequency and longer epilepsy duration were associated with more disability.

CONCLUSION

PWE in Mahenge experience variable degrees of disability. The affected domains indicate the need for societal rehabilitation of PWE in various community and/or social activities. Peer-support groups were instituted at the study sites to address these needs.

[Hospital admissions due to neglected tropical diseases in Piauí, in the Northeast region of Brazil: costs, time trends, and spatial patterns, 2001-2018]

To characterize the magnitude of hospital admissions and costs of patients with neglected tropical diseases, their time trends, and spatial patterns in Piauí, in the Northeast Region of Brazil, in 2001-2018. Ecological study of mixed designs, with calculation of relative risk (RR), time-trend analysis by Poisson regression, and inflection points, using data from neglected tropical diseases Hospital Admission Authorizations available in the Hospital Information System of the Brazilian Unified National Health System (SIH/SUS). Data showed 49,832 hospital admissions due to neglected tropical diseases in the period (rate: 86.70/100,000 inhabitants; 95%CI: 83.47; 89.93); of these, dengue (78.2%), leishmaniasis (8.6%), and leprosy (6.4%). The total cost was BRL 34,481,815.43, 42.8% of which referred to medium complexity cases. Higher risks of hospitalization occurred among people ≥ 60 years (RR = 1.8; 95%CI: 1.5; 2.2), mixed race/color (RR = 1.7; 95%CI: 1.1; 2.4), residents of municipalities presenting medium social vulnerability (RR = 1.5; 95% CI: 1.3; 1.6), and population size (RR = 1.6; 95%CI: 1.4; 1.9). The time trend showed a reduction in hospital admissions due to neglected tropical diseases, 2003-2018 (annual percent change - APC: -10.3; 95%CI: -14.7; -5.6). The spatial pattern showed clusters with higher rates of hospital admission in border municipalities located south of the Mid-north macroregion, north of the Semiarid macroregion, and south of the Cerrados macroregion. Piauí remains with high hospital admission rates and costs for neglected tropical diseases. Despite the reduction in time trends, knowledge burden, population groups, and municipalities at greater risk and vulnerability reinforce the importance of monitoring and strengthening control actions to maintain the reduction of the burden and costs of hospital admission due to neglected tropical diseases in the state.

Barriers and Enablers to Health-Seeking for People Affected by Severe Stigmatising Skin Diseases (SSSDs): A Scoping Review

People affected by severe stigmatising skin diseases (SSSDs) often live in the poorest communities, within the poorest countries, and experience a range of barriers to seeking timely, quality care. This scoping review analyses the available literature on health-seeking for patients affected by SSSDs, to identify enablers and barriers to health-seeking. We searched MEDLINE complete, CINAHL, Global Health databases for suitable articles published between 2010 and 2020. Search strings were compiled for health-seeking, SSSDs and lower middle-income countries (LMIC). Our search returned 1004 studies from across three databases. Of these, 136 potentially relevant studies were identified and full texts were reviewed for eligibility against the inclusion criteria, leading to the inclusion of 55 studies. Thematic narrative analysis was used, with results framed around the Levesque framework to analyse barriers and enablers to health-seeking along the continuum of the patient pathway. This scoping review has revealed barriers across the patient pathway, from both supply and demand aspects of health services. Spiritual beliefs emerged strongly relating to care-seeking and underlying stigma. Curative care was a focus for the majority of studies, but few papers emphasised holistic care (such as physical rehabilitation and psychosocial support). From our analysis, greater community engagement is needed to reduce barriers along the patient-care pathway.

Health-related quality of life and associated factors among Onchocerciasis patients in southeast Nigeria: A cross-sectional comparative study

INTRODUCTION

Onchocerciasis, a neglected tropical disease of public health importance, causes chronic morbidity and severe disability that may impact on health-related quality of life (HRQoL) of the infected people. This study assessed the HRQoL and associated factors among onchocerciasis patients in southeast Nigeria.

METHODS

This was a community-based cross-sectional comparative study. Using a multistage sampling technique, 340 onchocerciasis patients were selected and matched for age and gender with the healthy population in the same neighbourhood. The respondents were interviewed using the short-form-36 (SF-36) questionnaire to determine their HRQoL. WHO Disability Assessment Schedule 2.0 tool (WHODAS 2.0) was used to assess disability in persons with onchocerciasis. Means were compared with independent student t-test while Chi-square test was used to compare proportions. Also, correlation analysis and logistic regression were used in the analyses.

RESULTS

A significantly lower proportion of people living with onchocerciasis had a good quality of life when compared with the healthy subjects (69.4% vs 93.5%, p<0.001). Also, an inverse relationship was seen between disability and quality of life in the onchocerciasis group (r = -0.647, p<0.001). Predictors of poor quality of life among respondents with onchocerciasis were: respondents aged ≥48 years (AOR = 2.5, 95% CI: 1.4-5.0), those with some disability associated with onchocerciasis (AOR = 3.33, 95%CI: 1.4-5.0) and respondents who perceived themselves as a burden to people (AOR = 10, 95%CI: 2.5-20).

CONCLUSION

Onchocerciasis impacted negatively on HRQoL of persons with onchocerciasis when compared with the healthy population. The quality of life of persons affected with onchocerciasis reduces with increasing disability. There is the need to increase community awareness on onchocerciasis to ensure early diagnosis and prompt treatment as this will reduce disability among those affected with the disease thus enhancing their HRQoL.

Feasibility of implementing recommendations to improve neglected tropical diseases surveillance and response in Kenya: a modified Delphi study

BACKGROUND

Effective health information systems (HIS) are critical towards achieving timely response to preventive chemotherapy neglected tropical diseases (PC-NTDs) and their eventual elimination. Strengthened HIS enable prompt case detection and effective response to halt disease transmission and prevent probable outbreaks. This study aimed to assess the importance and feasibility of implementing recommendations for improving surveillance core functions, support functions and surveillance attributes concerning PC-NTDs in Kenya.

METHODS

A descriptive web-based Delphi process comprising of two survey rounds was used to achieve group consensus on the importance of recommended actions and feasibility of their implementation. In the first round, participants were enrolled to complete a five-point likert-type self-administered electronic questionnaire comprising of 60 statements across 12 sub-domains on the importance of recommendations. In the second round, participants reappraised their responses following completion of a questionnaire with 56 rephrased statements on feasibility of implementing the recommendations to improve PC-NTDs surveillance and response. Data from both rounds were analysed using descriptive statistics and thematic analysis performed for the open-ended responses.

RESULTS

Sixty-two key stakeholders actively involved in surveillance and response activities in seven PC-NTDs endemic counties in Kenya were invited to participate. Of these, 50/62 completed the first round (81 % response rate) and 45/50 completed the second round (90 % response rate). Consensus was achieved (defined as > 70 % agreement) on the importance (93 %) of recommendation statements and feasibility (82 %) of implementing the important recommendations. Stakeholders agreed on the importance and feasibility of specific recommendations across the 12 sub-domains: case detection and registration, reporting, data analysis, feedback, epidemic preparedness and response, supervision, training, resources, simplicity, acceptability, stability and flexibility. However, there was lack of consensus on the feasibility of conducting routine data analysis, increasing supervision of surveillance activities at lower levels and retaining trained surveillance staff across all levels.

CONCLUSIONS

Consensus among health stakeholders on implementation of the important and feasible recommendations will inform relevant strategies for strengthening specific surveillance system functions in view of PC-NTDs in Kenya.

Are current preventive chemotherapy strategies for controlling and eliminating neglected tropical diseases cost-effective?

Neglected tropical diseases (NTDs) remain a significant cause of morbidity and mortality in many low-income and middle-income countries. Several NTDs, namely lymphatic filariasis, onchocerciasis, schistosomiasis, soil-transmitted helminthiases (STH) and trachoma, are predominantly controlled by preventive chemotherapy (or mass drug administration), following recommendations set by the WHO. Over one billion people are now treated for NTDs with this strategy per year. However, further investment and increased domestic healthcare spending are urgently needed to continue these programmes. Consequently, it is vital that the cost-effectiveness of preventive chemotherapy is understood. We analyse the current estimates on the cost per disability-adjusted life year (DALY) of the preventive chemotherapy strategies predominantly used for these diseases and identify key evidence gaps that require further research. Overall, the reported estimates show that preventive chemotherapy is generally cost-effective, supporting WHO recommendations. More specifically, the cost per DALY averted estimates relating to community-wide preventive chemotherapy for lymphatic filariasis and onchocerciasis were particularly favourable when compared with other public health interventions. Cost per DALY averted estimates of school-based preventive chemotherapy for schistosomiasis and STH were also generally favourable but more variable. Notably, the broader socioeconomic benefits are likely not being fully captured by the DALYs averted metric. No estimates of cost per DALY averted relating to community-wide mass antibiotic treatment for trachoma were found, highlighting the need for further research. These findings are important for informing global health policy and support the need for continuing NTD control and elimination efforts.

Mental health conditions after snakebite: a scoping review

Introduction

Snakebite is a neglected tropical disease. Snakebite causes at least 120 000 death each year and it is estimated that there are three times as many amputations. Snakebite survivors are known to suffer from long-term physical and psychological sequelae, but not much is known on the mental health manifestations postsnakebite.

Methods

We conducted a scoping review and searched five major electronic databases (Ovid MEDLINE(R), Global Health, APA PsycINFO, EMBASE classic+EMBASE, Cochrane Central Register of Controlled Trials), contacted experts and conducted reference screening to identify primary studies on mental health manifestations after snakebite envenomation. Two reviewers independently conducted titles and abstract screening as well as full-text evaluation for final inclusion decision. Disagreements were resolved by consensus. We extracted data as per a standardised form and conducted narrative synthesis.

Results

We retrieved 334 studies and finally included 11 studies that met our eligibility criteria. Of the 11 studies reported, post-traumatic stress disorder (PTSD) was the most commonly studied mental health condition after snakebite, with five studies reporting it. Estimate of the burden of PTSD after snakebite was available from a modelling study. The other mental health conditions reported were focused around depression, psychosocial impairment of survivors after a snakebite envenomation, hysteria, delusional disorders and acute stress disorders.

Conclusion

There is a need for more research on understanding the neglected aspect of psychological morbidity of snakebite envenomation, particularly in countries with high burden. From the limited evidence available, depression and PTSD are major mental health manifestations in snakebite survivors.

Disability, mental health, stigma and discrimination and neglected tropical diseases

The neglected tropical disease (NTD) agenda should include a focus on disability when ‘planning for the next decade of progress’. Millions of people are currently living with the disabling consequences of NTDs and mental health conditions are frequent among people living with NTDs. Stigma around NTDs is also common. However, these aspects of NTDs are often ignored by programmes that focus on infectious disease control. NTD programmes must broaden in scope to include provision of rehabilitation and linkages to mental health support and tackling stigma through demystifying NTDs. These efforts will promote the inclusion and well-being of people living with NTDs.

The awareness of neglected tropical diseases in a sample of medical and nursing students in Cairo University, Egypt: A cross-sectional study

Neglected tropical diseases (NTDs) are a group of chronic diseases affecting 1.2 billion people worldwide, with more burden in the developing communities. Improving awareness about NTDs is a powerful affordable long-term intervention for infection control. In literature, there is a limited number of studies in the developing countries assessing the awareness of healthcare providers regarding these diseases. The present study aimed at assessing the awareness of a sample of Cairo University medical and nursing students regarding NTDs. A cross-sectional descriptive study was conducted on 184 medical and nursing students in Cairo University. An anonymous self-administered questionnaire in English language with an estimated completion time of 15 minutes was used for evaluation. It included question categories which cover the knowledge about NTDs and control measures as well as the willingness to participate in NTDs control activities. Content analysis was performed on the materials and specifications of the epidemiology course given to medical and nursing students. Out of the study participants, 26% knew the meaning of NTDs. The main source of their knowledge was social media followed by the epidemiology course. A percentage of 33% of the students agreed that NTDs are of public health importance in Egypt. Thirty four percent of the participants expressed their willingness to participate in control activities for NTDs. Comparing medical and nursing students, a higher percentage of the nursing students stated that NTDs are causing a public health problem in Egypt with a statistically significant difference (P value < 0.001), while a statistically significant higher percentage of medical students believed that the awareness level regarding NTDs in Egypt is low (P value = 0.002). Cairo University medical and nursing students in this study showed a gap in the level of knowledge regarding NTDs and their control activities which represents a great threat to the control of these diseases.

Estimating helminth burdens using sibship reconstruction

BACKGROUND

Sibship reconstruction is a form of parentage analysis that can be used to identify the number of helminth parental genotypes infecting individual hosts using genetic data on only their offspring. This has the potential to be used for estimating individual worm burdens when adult parasites are otherwise inaccessible, the case for many of the most globally important human helminthiases and neglected tropical diseases. Yet methods of inferring worm burdens from sibship reconstruction data on numbers of unique parental genotypes are lacking, limiting the method's scope of application.

RESULTS

We developed a novel statistical method for estimating female worm burdens from data on the number of unique female parental genotypes derived from sibship reconstruction. We illustrate the approach using genotypic data on Schistosoma mansoni (miracidial) offspring collected from schoolchildren in Tanzania. We show how the bias and precision of worm burden estimates critically depends on the number of sampled offspring and we discuss strategies for obtaining sufficient sample sizes and for incorporating judiciously formulated prior information to improve the accuracy of estimates.

CONCLUSIONS

This work provides a novel approach for estimating individual-level worm burdens using genetic data on helminth offspring. This represents a step towards a wider scope of application of parentage analysis techniques. We discuss how the method could be used to assist in the interpretation of monitoring and evaluation data collected during mass drug administration programmes targeting human helminthiases and to help resolve outstanding questions on key population biological processes that govern the transmission dynamics of these neglected tropical diseases.