David Michels

ORCID: 0009-0001-2230-0173
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About
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Research Areas
  • HIV, Drug Use, Sexual Risk
  • HIV/AIDS Research and Interventions
  • Sex work and related issues
  • Pharmaceutical industry and healthcare
  • International Maritime Law Issues
  • Hepatitis C virus research
  • Vaccine Coverage and Hesitancy
  • Land Rights and Reforms
  • Streptococcal Infections and Treatments
  • COVID-19 and Mental Health
  • Opioid Use Disorder Treatment
  • Clostridium difficile and Clostridium perfringens research
  • Hepatitis B Virus Studies
  • Medical Malpractice and Liability Issues
  • Mobile Health and mHealth Applications
  • Biomedical Ethics and Regulation
  • Forensic Toxicology and Drug Analysis
  • Adolescent Sexual and Reproductive Health
  • Clinical practice guidelines implementation
  • Intramuscular injections and effects
  • Bacillus and Francisella bacterial research
  • Health Policy Implementation Science
  • Blood donation and transfusion practices
  • Long-Term Effects of COVID-19
  • Poxvirus research and outbreaks

Agence Nationale de Recherches sur le Sida et les Hépatites Virales
2024

ADIR Association
2019

École des hautes études en sciences sociales
2013

Centre National de la Recherche Scientifique
2013

Laboratoire Interdisciplinaire Solidarités Sociétés Territoires
2013

Pre-exposure prophylaxis (PrEP) is fully reimbursed by the French health insurance system since 2016. However, uptake of PrEP slower than expected and little known about men who have sex with (MSM) are eligible for according to guidelines, but not using it. This study aims (1) assess describe MSM that it, (2) identify potential individual structural barriers among aware intend take PrEP. Data from EMIS-2017, a cross-sectional internet survey gay, bisexual, other MSM, were used. Among 7965...

10.1080/09540121.2020.1739219 article EN AIDS Care 2020-03-19

Objective To describe changes in pre-exposure prophylaxis (PrEP) use during and following the COVID-19 lockdown France (March–May 2020) identify factors associated with PrEP discontinuation among men who have sex (MSM) after lockdown. Methods Data from the, an anonymous, cross-sectional internet survey MSM July 2020, were analysed. Among respondents using prior to lockdown, a binary logistic regression model was used compare participants still taking (current users) those not at time of...

10.1136/sextrans-2021-055189 article EN Sexually Transmitted Infections 2022-02-11

Introduction Given the high infection rate of sexually transmitted infections (STI) among migrant women sex workers (WSWs), it is necessary to understand how improve prevention, information and care for this vulnerable population. Community health (CHWs), by linking community services, are positioned outcomes in communities. This article aims describe a pilot innovative intervention performed CHWs sexual WSWs. Methods one-year study used respondent-driven sampling (RDS) recruit...

10.3389/fpubh.2024.1359363 article EN cc-by Frontiers in Public Health 2024-03-27

Background: In 2020, people living with HIV (PLHIV) in France were worried that the COVID-19 health crisis would lead to long-term changes their care. Using data from anonymous, online, cross-sectional survey ACOVIH, which was completed by PLHIV between July and September this study explored factors associated worry about care after end of first lockdown (17 March-11 May 2020). Methods: multivariate logistic regression, we compared participants who declared they those did not, terms...

10.1177/23259582251320127 article EN cc-by-nc Journal of the International Association of Providers of AIDS Care (JIAPAC) 2025-01-01

Introduction Migrant women sex workers (MWSWs) are affected by higher morbidity rates, reflecting the complex health risks associated with work and migration which they face. This study aimed to assess MWSWs’ use of primary care services in France, as well factors having a family doctor. Methods cross-sectional observational 135 cisgender transgender MWSWs is part larger Favoriser l'Accès à la Santé Sexuelle des Travailleuses du Sexe project, aims improve global knowledge access sexual...

10.1136/bmjph-2024-002234 article EN cc-by-nc BMJ Public Health 2025-03-01

Abstract General practitioners (GPs) play a key role in reducing the hidden HIV-epidemic, but many diagnostic opportunities are missed primary care. This study aimed at informing development of an HIV-testing intervention for GPs Flanders (Belgium) using formative research with participatory approach. Through active involvement advisory board and 16 group discussions 122 Flemish GPs, GPs’ current practices perceived practical relevance 2 distinct strategies (i.e. provider-initiated testing...

10.1093/heapro/daz037 article EN cc-by-nc Health Promotion International 2019-04-16

Because of a high rate HIV diagnosis and restricted medical access in the Centre-Val de Loire region France , remote consultations (RC) with community-based approach has been implemented to promote healthcare. Our study aimed determine whether RC could improve pre-exposure prophylaxis (PrEP) for men who have sex (MSM) as part healthcare pathway associated PrEP.

10.1016/j.jeph.2024.202201 article EN cc-by-nc-nd Deleted Journal 2024-03-03

The World Health Organization recommends pre-exposure prophylaxis (PrEP) for all populations at substantial risk of HIV infection. However, at-risk women very rarely use PrEP in France-this represents a critical issue among migrant sex workers (MWSWs). Previous studies on or migrants focused individual social determinants motivation. operational real-word settings using holistic population approach to maximize adherence MWSWs are lacking.FASSETS (ie, "Favoriser l'Accès à la Santé Sexuelle...

10.2196/42844 article EN cc-by JMIR Research Protocols 2023-04-03

Abstract Introduction Since the advent of HIV pre‐exposure prophylaxis (PrEP), stigma has been shown to be a major barrier its uptake and adherence. It is therefore essential define proportion users who consider that PrEP can negatively impact their image factors associated with this perception. Method We performed multivariable logistic regression on data from 2567 participants in ANRS‐PREVENIR study answered outcome question. Results Almost one‐third sample (comprising mostly cisgender men...

10.1111/hiv.13491 article EN cc-by-nc-nd HIV Medicine 2023-04-12

Abstract Background Hepatitis C virus (HCV) infection prevalence is particularly high in people who inject drugs (PWID), a population that faces many barriers to HCV testing and care. A better understanding of the determinants access needed improve their engagement care cascade. We used data from cross-sectional survey drugs, mainly opioids, identify factors associated with recent testing. Methods Self-reported on antibody were analyzed for 550 557 PWID enrolled PrebupIV, French...

10.1186/s12954-023-00841-7 article EN cc-by Harm Reduction Journal 2023-07-29

In developed countries, vaccinations against hepatitis B (HBV), A (HAV), and human papillomavirus (HPV) are often recommended to men who have sex with (MSM) because of the risky sexual practices in which some engage. Vaccine coverage these diseases is not optimal France, probably due part vaccine hesitancy (VH). The overall aim this survey among MSM was estimate prevalence different grades VH for vaccines as well general (toward any vaccine). specific objectives were study sociodemographic...

10.1080/21645515.2023.2293489 article EN cc-by-nc Human Vaccines & Immunotherapeutics 2023-12-14

Introduction Clinical research has focused on risk factors and treatment for severe acute respiratory syndrome coronavirus 2 (SARS-COV-2), particularly in people with a comorbidity including the human immunodeficiency virus (HIV), but little attention been paid to care pathway. This article aims show how living HIV may have biopsychosocial burden or boost pathways Covid-19. Method People (PLHIV) from 9 clinical centers were invited participate this qualitative study. The sampling was...

10.1371/journal.pone.0295223 article EN cc-by PLoS ONE 2024-03-07

Vaccination coverage against hepatitis A virus (HAV), B (HBV), and human papillomaviruses (HPV) is insufficient among men who have sex with (MSM), partly because of their high prevalence vaccine hesitancy (VH) specific to these vaccines. This study aimed investigate determinants VH in MSM, focusing on characteristics sexual activity, propensity use prevention tools medical care, disclosure orientation health care professionals (HCPs), perceived stigmatization. cross-sectional electronic...

10.1080/21645515.2024.2348845 article EN cc-by-nc Human Vaccines & Immunotherapeutics 2024-05-23

Communities have been a driving force in the response to HIV epidemic, advocating for research, access treatment and healthcare, human rights key populations (KP) people living with (PLHIV). The importance of community engagement (CE) development implementation pertinent programmes throughout care continuum has widely recognized 1-3. In context increasing pre-exposure prophylaxis (PrEP) interest (though still limited), there is an opportunity fresh look at CE regarding HIV/STI research...

10.1002/jia2.25350 article EN cc-by Journal of the International AIDS Society 2019-08-01

The objective of this study was to describe stakeholders’ perspectives on the acceptability WeFLASH © (AADISS, Paris, France), a digital smartphone sexually transmitted infection (STI) patient notification (PN) tool be launched among French HIV pre-exposure prophylaxis users (PrEPers). In Lyon, and Nice, we conducted 2-hour focus group discussions with PrEPers (n = 21) community mediators 10), one-on-one interviews PrEP-prescribing physicians 5) HIV/STI management decision-makers 4)....

10.1177/0956462419878043 article EN International Journal of STD & AIDS 2019-11-22

Abstract Background 3-methylmethcathinone (3-MMC) has been available on the European drug market for several years, but an increase in its availability seems to have occurred around 2020, associated with reports of harm and death. We aimed analyze composition supposed 3-MMC samples purchased concordance assumed drug. Methods A prospective multicenter ( n = 6) study was conducted between February 2021 September Auvergne-Rhone-Alpes, France. The inclusion criteria were: users over 18 years age...

10.1186/s12954-023-00836-4 article EN cc-by Harm Reduction Journal 2023-07-28

Abstract Background The effectiveness of collaborative approaches in health interventions is underlined the literature. Given serious challenges to adequately managing HCV epidemic people who inject drugs (PWID), and need improve existing harm reduction (HR) this population, it seems important investigate how collaboration between stakeholders ensured action research interventions. present study aimed explore interactions outreach workers officers collaborating implementation an project for...

10.1186/s12954-021-00551-y article EN cc-by Harm Reduction Journal 2021-10-09

Despite PrEP being available and free of charge in France, a gap remains between the estimated number men who have sex with (MSM) high-risk exposure to HIV MSM users. The objective this study is identify factors associated non-intention use among PrEP-eligible PrEP-aware "non-intenders".

10.1080/09540121.2023.2268887 article EN cc-by-nc-nd AIDS Care 2023-11-06

<title>Abstract</title> <bold>Background: </bold>Besides the high prevalence of HIV and HCV infections, people who inject drugs (PWID) have a cumulative risk acquiring skin soft tissue infections (SSTI) from, among other things, social precariousness, homelessness/unstable housing, unhygienic injecting practices. We propose to evaluate whether two-component educational hand hygiene intervention which combines training in hand-washing with supply single-use alcohol-based rub, called MONO-RUB,...

10.21203/rs.3.rs-4808549/v1 preprint EN Research Square (Research Square) 2024-09-18

COVID-19 vaccination is crucial to reduce the incidence of severe forms disease in population. However, people who use drugs (PWUD) face structural and individual barriers vaccination, little known about intention factors associated with that among PWUD. This study aimed estimate PWUD early stage campaigns.

10.1186/s12954-024-01096-6 article EN cc-by-nc-nd Harm Reduction Journal 2024-10-16
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