Durability of the deltamethrin-treated polypropylene long-lasting net LifeNet® in a pyrethroid resistance area in south western Benin: A phase III trial.

BACKGROUND: Long-lasting insecticidal bed nets (LLINs) are a key measure for preventing malaria and their evaluation is coordinated by the World Health Organization Pesticide Evaluation Scheme (WHOPES). LifeNet® was granted WHOPES time-limited interim recommendation in 2011 after successful Phase I and Phase II evaluations. Here, we evaluated the durability and community acceptance of LifeNet® in a Phase III trial from June 2014 to June 2017 in Benin rural area. METHODS: A prospective longitudinal, cluster-randomized, controlled trial with households as the unit of observation was designed to assess the performance of LifeNet® over a three-year period, using a WHOPES fully recommended LLIN (PermaNet® 2.0) as a positive control. The primary outcomes were the bioassay performance using WHO cone assays and tunnel tests, the insecticide content and physical integrity. RESULTS: At baseline, 100% of LLINs were within the tolerance limits of their target deltamethrin concentrations. By 36 months only 17.3% of LifeNet® and 8.5% of PermaNet® LLINs still were within their target deltamethrin concentrations. Despite these low rates, 100% of both LLINs meet WHO efficacy criteria (≥ 80% mortality or ≥ 95% knockdown or tunnel test criteria of ≥ 80% mortality or ≥ 90% blood-feeding inhibition) after 36 months using WHO cone bio-assays and tunnel tests. The proportion of LLINs in good physical condition was 33% for LifeNet® and 29% for PermaNet® after 36 months. After 36 M the survivorship was 21% and 26% for LifeNet® and PermaNet® respectively. Although both LLINs were well accepted by the population, complaints of side effects were significantly higher among LifeNet® users than PermaNet® ones. CONCLUSION: LifeNet® LLINs did meet WHO criteria for bio-efficacy throughout the study period and were well accepted by the population. This is an important step towards getting a full WHO recommendation for use in malaria endemic countries.

[Preparing for epidemics. A strategy for strengthening social science skills in Africa]. / Se préparer face aux épidémies Une stratégie de renforcement des compétences en sciences sociales en Afrique.

The Covid pandemic was a reminder of the need to be prepared for epidemics and pandemics and to take into account their socio-political dimensions by developing socioanthropological and interdisciplinary approaches. In the post-crisis era, the challenge is one of operationality. How can these dimensions be made more visible? How can we develop analyses that can help to humanize institutional responses, make inequalities visible to limit them during the crisis, reveal structural determinants of transmission, and define interventions that are scientifically sound, ethically just and respectful of diversity?Three strategies are relevant to meet these challenges: (1) more social scientists in Frenchspeaking Africa must get expertise on epidemics to investigate associated issues before, during and after epidemic crisis; (2) public health professionals, health and social workers must get informed about social, historical, economic and political aspects of epidemics that shape risk, care and control; (3) collaborations between researchers and those involved in responding to epidemics on the basis of shared knowledge must develop.This article presents a capacity-building initiative developed in French-speaking West Africa by the Anthropology of Emerging Epidemics Network (RAAE), in conjunction with other networks (Sonar-Global) and institutions (CRCF, IRD). It describes and analyzes a program that combines a working method, a scientific content and teaching tools. This program benefited from previous training experiences and gathered expertise from about 25 social scientists, mainly medical anthropologists, who have worked on various epidemics and pandemics such as AIDS, Ebola, plague, Covid and dengue in West Africa and beyond. The process to develop the course was based on workshops followed by redaction periods, then testings for content and tools during training sessions.The course focuses on two audiences: social science researchers (with a Master degree level and above) and social and health workers (public health, community health, NGOs, social workers). For the former, the course aims at reinforcing theoretical and methodological skills through the presentation of issues, key concepts, selected theoretical developments, themes and bibliographical references. For the latter, the course is based on modules about operational issues that can be taken separately, to better adapt the content of trainings to local teams' needs. For both, a glossary includes 100 definitions of public health, medical and social science vocabulary, relevant to epidemics. The content in terms of skills to be acquired (knowledge, know-how) is presented briefly in the article. Both the scientific content and learning methods and tools are presented in a manual (Desclaux et al., Anthropologie appliquée aux épidémies émergentes, 2022 [5]) as well as on Sonar-Global (English) and RAEE (French) websites (www.sonar-global.eu, www.raee.fr).The knowledge to be imparted is organized into 13 modules: introduction; the framework for responding to epidemics; emergence and One Health; antimicrobial resistance; infectious risk (inequalities, stigmatization and prevention); knowledge (circulation and interpretation); health services (places of risk and care); public health measures (lockdown and distancing); experiences (suffering of the sick and mobilization); death (meaning and rituals); vaccination (innovation, equity and hesitation); epidemic cycles (preparation, response and recovery); challenges, methods, ethics and governance; and conclusion.The first training courses held in Senegal and Burkina Faso for university researchers and young scholars from Africa and France were positively evaluated by the participants. They report that they have acquired knowledge in epidemic social science, but also in public health, which has given them the necessary basis for communicating and developing collaborations (in research and intervention) with social and health actors. The model could be duplicated with adaptation for new training sessions organized by other institutions, for which a manual is available.

[Neglected patients, unexpected effects. Ebola virus disease suspected case experience.] / Patients négligés, effets imprévus. L'expérience des cas suspects de maladie à virus Ebola.

INTRODUCTION: In an epidemic context, the identification of suspected cases, among alert or contact cases, leads to caring for persons for whom only a minority will be confirmed cases, with a laboratory diagnosis positive for Ebola. How are suspected cases treated that are not subsequently confirmed and how do they feel about this experience ? What are the medical or social consequences ? METHODS: A qualitative study was conducted in two countries with a high Ebola risk epidemic situation in 2015-2016 (Senegal, Côte d'Ivoire). Based on interviews with suspected cases and caregivers, 12 referral itineraries were identified for 20 people. RESULTS: Narratives are dominated by the perception of failures at several levels: insufficient means and service preparation; lack of care for patients' vital needs and lack of treatment for their diseases; lack of listening, explanation and consideration for their families; patients' suffering from being isolated and facing violence; unexpected secondary social effects. These findings can be explained partly by caregivers' focus on Ebola diagnosis more than patients, fear of contagion, and by the insufficient preparation of isolation spaces at the time of the survey. CONCLUSION: The results show the possible pitfalls of surveillance systems which increase the number of persons identified as suspected cases, if care services are not sufficiently prepared. Recommendations based on these results should be considered particularly to define operational procedures and trainings for health professionals.

Human exposure to early morning Anopheles funestus biting behavior and personal protection provided by long-lasting insecticidal nets.

A shift towards early morning biting behavior of the major malaria vector Anopheles funestus have been observed in two villages in south Benin following distribution of long-lasting insecticidal nets (LLINs), but the impact of these changes on the personal protection efficacy of LLINs was not evaluated. Data from human and An. funestus behavioral surveys were used to measure the human exposure to An. funestus bites through previously described mathematical models. We estimated the personal protection efficacy provided by LLINs and the proportions of exposure to bite occurring indoors and/or in the early morning. Average personal protection provided by using of LLIN was high (≥80% of the total exposure to bite), but for LLIN users, a large part of remaining exposure occurred outdoors (45.1% in Tokoli-V and 68.7% in Lokohoué) and/or in the early morning (38.5% in Tokoli-V and 69.4% in Lokohoué). This study highlights the crucial role of LLIN use and the possible need to develop new vector control strategies targeting malaria vectors with outdoor and early morning biting behavior. This multidisciplinary approach that supplements entomology with social science and mathematical modeling illustrates just how important it is to assess where and when humans are actually exposed to malaria vectors before vector control program managers, policy-makers and funders conclude what entomological observations imply.

Reports of long-lasting insecticidal bed nets catching on fire: a threat to bed net users and to successful malaria control?

BACKGROUND: One of the control tools to reduce malaria transmission is the use of LLINs. However, several studies show that household bed net use is quite low. A study was developed to better understand the cultural factors that might explain these gaps in Benin. One reason mentioned is that bed nets can catch on fire and cause harm. This paper presents a summary of these findings, their analysis and the ensuing issues. METHODS: This anthropological study is based on an inductive qualitative approach, including 91 semi-structured interviews conducted from July 2011 to March 2012 in a health district in Southern Benin. RESULTS: Fifty-six persons stated that bed nets can catch on fire but do not always refer to specific facts. However, 34 of the 56 people narrate specific events they heard or experienced. 39 accounts were geographically located and situated in time, with various details. In 27 situations, people were burned, for which 12 people reportedly died. DISCUSSION: The disparity between these results and the dearth of bibliographic documentation in the initial search prompted a more in-depth literature review: 16 contributions between 1994 and 2013 were found. Bed net fires were noted in 10 countries, but it is impossible to ascertain the frequency of such events. Moreover, bodily harm can be significant, and several cases of death attributed to bed net fires were noted. CONCLUSIONS: Indisputably, the use of bed nets to reduce the impact of this terrible disease is an optimal control method. However, the perception that LLINs have a potentially negative effect hinders the use rate in the real world, at least for some. If some people fear the risk of fires, this possibility must be addressed during information and prevention sessions on malaria, with a communication strategy tailored to specific social contexts. Moreover, all possible measures should be taken to limit the harm suffered by individuals and their families.

Anthropological approach of adherence factors for antihypertensive drugs.

OBJECTIVE: Uncontrolled high blood pressure leads clinicians to wonder about adherence degree among hypertensive patients. In this context, our study aims to describe and analyze patients' experience of antihypertensive drugs in order to shed light on the multiple social and symbolic logics, forming part of the cultural factors shaping personal medication practices. METHODS: The medical inductive and comprehensive anthropological approach implemented is based on an ethnographic survey (observations of consultations and interviews). Semi-structured interviews were conducted with 68 hypertensive patients (39 women and 29 men, between the ages of 40 and 95, of whom 52 were over 60) who had been receiving treatment for over a year. RESULTS: Antihypertensive drugs are reinterpreted when filtered through the cultural model of physiopathology (the body as an engine). This symbolic dimension facilitates acceptance of therapy but leads to a hierarchization of other prescribed drugs and of certain therapeutic classes (diuretics). Prescription compliance does not solely depend on the patient's perception of cardiovascular risk, but also on how the patient fully accepts the treatment and integrates it into his or her daily life; this requires identification with the product, building commitment and self-regulation of the treatment (experience, managing treatment and control of side effects, intake and treatment continuity). Following the prescription requires a relationship based on trust between the doctor and patient, which we have identified in three forms: reasoned trust, emotional trust and conceded trust. CONCLUSION: Consideration and understanding of these pragmatic and symbolic issues by the treating physician should aid practitioners in carrying out their role as medical educators in the management of hypertension. This paper was originally published in French, in the journal Pratiques et organisation des soins 39(1): 3-12.

Gender asymmetry in healthcare-facility attendance of people living with HIV/AIDS in Burkina Faso.

Anthropological research in Burkina Faso indicates that more HIV-positive women than HIV-positive men are attending care facilities for people living with HIV/AIDS (PLWH) and accessing antiretroviral medicine. This article, situated in the field of study of interactions between gender and AIDS, offers a description of this asymmetry and an anthropological analysis of the socio-cultural determinants, through analysis of data from ethnographic research among PLWH and health actors. Examining social representations of femininity and masculinity in Burkinabe society and the organisation of the healthcare system in connection with gender shed light on the decision-making processes of both sexes around therapeutic choices and the itinerary of care. On the one hand, the social values attached to femininity, maternity and the status of wife create conditions for women that favour their attendance at care facilities for PLWH and encourage a widespread practice where wives take the place of their husbands in healthcare queues. Moreover, health policies and the effects of women's empowerment within the healthcare system strengthen women's access to health services. On the other hand, representations of masculinity are fully implicated in the cultural construction of men's reluctance to attend care facilities for PLWH. The values associated with this masculinity cause men to run great health, economic and social risks, not only for themselves, but also for their wives and children. By better understanding the interaction between gender, the experience of HIV and the institutional organisation of healthcare, we can identify ways to reduce men's reluctance to attend care facilities for PLWH and improve both prevention and treatment-oriented programmes.

Alternative medicines for AIDS in resource-poor settings: insights from exploratory anthropological studies in Asia and Africa.

The emergence of alternative medicines for AIDS in Asia and Africa was discussed at a satellite symposium and the parallel session on alternative and traditional treatments of the AIDSImpact meeting, held in Marseille, in July 2007. These medicines are heterogeneous, both in their presentation and in their geographic and cultural origin. The sessions focused on the role of these medications in selected resource poor settings in Africa and Asia now that access to anti-retroviral therapy is increasing. The aims of the sessions were to (1) identify the actors involved in the diffusion of these alternative medicines for HIV/AIDS, (2) explore uses and forms, and the way these medicines are given legitimacy, (3) reflect on underlying processes of globalisation and cultural differentiation, and (4) define priority questions for future research in this area. This article presents the insights generated at the meeting, illustrated with some findings from the case studies (Uganda, Senegal, Benin, Burkina Faso, China and Indonesia) that were presented. These case studies reveal the wide range of actors who are involved in the marketing and supply of alternative medicines. Regulatory mechanisms are weak. The efficacy claims of alternative medicines often reinforce a biomedical paradigm for HIV/AIDS, and fit with a healthy living ideology promoted by AIDS care programs and support groups. The AIDSImpact session concluded that more interdisciplinary research is needed on the experience of people living with HIV/AIDS with these alternative medicines, and on the ways in which these products interact (or not) with anti-retroviral therapy at pharmacological as well as psychosocial levels.

Access to antiretroviral drugs and AIDS management in Senegal.

OBJECTIVES: Description and analysis of the Senegalese Antiretroviral Drug Access Initiative (ISAARV), the first governmental highly active antiretroviral therapy (HAART) treatment programme in Africa, launched in 1998. METHODS AND RESULTS: ISAARV was initially an experimental project designed to evaluate the feasibility, efficacy and acceptability of HAART in an African context. It was based on four principles: collective definition of the strategy, with involvement of the health professionals who would be called on to execute the programme; matching the objectives to available means (gradual enrollment according to drug availability); monitoring by several research programmes; and ongoing adaptation of treatment and follow-up according to the latest international recommendations. Persons qualifying for antiretroviral (ARV) therapy are selected on the basis of immunological and clinical criteria, regardless of economic and social considerations. A system of subsidies was created to favor access to ARV. Following the ARV price reductions that occurred in November 2000, 100% subsidies were created for the poorest participants. Optimal adherence was ensured by monthly follow-up by pharmacists and support groups held by social workers and patient associations. The chosen supply and distribution system allowed drug dispensing to be strictly controlled. CONCLUSION: The ISAARV programme demonstrates that HAART can be successfully prescribed in Africa. This experience has served as the basis for the creation of a national treatment programme in Senegal planned to treat 7000 patients by 2006.