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47 result(s)
Journal Article > ResearchFull Text

Changes over time in the proportion of advanced HIV disease in two high HIV prevalence settings in Ndhiwa (Kenya) and Eshowe (South Africa)

J Int Assoc Provid AIDS Care JIAPAC. 17 June 2024; Online ahead of print; DOI:10.1177/23259582241260219
Chihana M, Conan N, Ohler L, Huerga H, Wanjala S,  et al.
J Int Assoc Provid AIDS Care JIAPAC. 17 June 2024; Online ahead of print; DOI:10.1177/23259582241260219
BACKGROUND
The burden of advanced HIV disease remains a significant concern in sub-Saharan Africa. In 2015, the World Health Organization released recommendations to treat all people living with HIV (PLHIV) regardless of CD4 (“treat all”) and in 2017 guidelines for managing advanced HIV disease. We assessed changes over time in the proportion of PLHIV with advanced HIV and their care cascade in two community settings in sub-Saharan Africa.

METHODS
Cross-sectional population-based surveys were conducted in Ndhiwa (Kenya) in 2012 and 2018 and in Eshowe (South Africa) in 2013 and 2018. We recruited individuals aged 15-59 years. Consenting participants were interviewed and tested for HIV at home. All participants with HIV had CD4 count measured. Advanced HIV was defined as CD4 < 200 cells/µL.

RESULTS
Overall, 6076 and 6001 individuals were included in 2012 and 2018 (Ndhiwa) and 5646 and 3270 individuals in 2013 and 2018 (Eshowe), respectively. In Ndhiwa, the proportion of PLHIV with advanced HIV decreased from 2012 (159/1376 (11.8%; 95% CI: 9.8-14.2)) to 2018 (53/1000 (5.0%; 3.8-6.6)). The proportion of individuals with advanced HIV on antiretroviral therapy (ART) was 9.1% (6.9-11.8) in 2012 and 4.2% (3.0-5.8) in 2018. In Eshowe, the proportion with advanced HIV was 130/1400 (9.8%; 8.0-11.9) in 2013 and 38/834 (4.5%; 3.3-6.1) in 2018. The proportion with advanced HIV among those on ART was 6.9% (5.5-8.8) in 2013 and 2.8% (1.8-4.3) in 2018. There was a significant increase in coverage for all steps of the care cascade among people with advanced HIV between the two Ndhiwa surveys, with all the changes occurring among men and not women. No significant changes were observed in Eshowe between the surveys overall and by sex.

CONCLUSION
The proportion with advanced HIV disease decreased between the first and second surveys where all guidelines have been implemented between the two HIV surveys.
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Conference Material > Poster

Enhancing adolescent HIV care: Implementation and evaluation of teen models-of-care for adolescents living with HIV in Uganda and Malawi

Masson D, Nicholas S, Szumilin E, Balkan S
Epicentre Scientific Day 2024. 23 May 2024
Technical Report > Study report

The design, implementation, and effectiveness of teen models of care: lessons from MSF supported programmes providing treatment and care for adolescents aged 10 to 19 living with HIV in Malawi and Uganda

Masson D, Nicolas S, Szumilin E, Balkan S
1 May 2024; DOI:10.57740/3mmnVMAd0
This “lessons learned” report presents a thorough documentation of the implementation process of the models of care for adolescents (aged ~10-19 years) living with HIV (ALHIV) in two HIV programmes supported by MSF. The first is in Arua, a town in the West Nile Province in Uganda and, the second, in Chiradzulu rural district, Southern Malawi. Both countries are among the top 15 countries to be affected by HIV in the world. Whilst Arua is in a lower HIV-prevalent setting, Chiradzulu district remains one of the most affected regions of Malawi.

The key lessons learned from this implementation were:

▸ Schedule all adolescents on the same day(s); preferably during out-of-school hours.
▸ Ensure disclosure is a repeated and ongoing process and not an on/off one.
▸ Maintain close collaboration between clinicians and counsellors to continuously transmit information to the changing and evolving concerns of teens.
▸ Organize sessions by age band, separating the pre-pubescent adolescents from older ones. Full HIV disclosure is recommended before integrating the adolescents into group activities.
▸ Include sexual and reproductive health in the package of care. Health workers and peers must be trained to address the specific concerns of adolescents.
▸ Recognize peers are an important asset to conveying messages and sharing positive experiences. While peers are useful actors in the management of teens, they should not be solely responsible for managing the cases of adolescents failing on treatment.
▸ Perform a viral load (VL) every six months for this vulnerable age group. Point-of-care VL, with same-day results, permits a rapid management of the unsuppressed patients, and requires logistic organization in rural contexts.
▸ Utilize a multidisciplinary team – clinicians, counsellors, psychologists, social workers, and peers – to address the complex situations faced by some adolescents.
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Technical Report > Evidence Brief

The design, implementation, and effectiveness of teen models of care: lessons from MSF supported programmes providing treatment and care for adolescents aged 10 to 19 living with HIV in Malawi and Uganda

Masson D, Nicolas S, Szumilin E, Balkan S
1 May 2024
Journal Article > ResearchFull Text

Diagnostic yield of urine lipoarabinomannan and sputum tuberculosis tests in people living with HIV: a systematic review and meta-analysis of individual participant data

Lancet Global Health. 1 June 2023; Volume 11 (Issue 6); e903-e916.; DOI:10.1016/S2214-109X(23)00135-3
Broger T, Koeppel L, Huerga H, Miller P, Gupta-Wright A,  et al.
Lancet Global Health. 1 June 2023; Volume 11 (Issue 6); e903-e916.; DOI:10.1016/S2214-109X(23)00135-3
BACKGROUND
Sputum is the most widely used sample to diagnose active tuberculosis, but many people living with HIV are unable to produce sputum. Urine, in contrast, is readily available. We hypothesised that sample availability influences the diagnostic yield of various tuberculosis tests.

METHODS
In this systematic review and meta-analysis of individual participant data, we compared the diagnostic yield of point-of-care urine-based lipoarabinomannan tests with that of sputum-based nucleic acid amplification tests (NAATs) and sputum smear microscopy (SSM). We used microbiologically confirmed tuberculosis based on positive culture or NAAT from any body site as the denominator and accounted for sample provision. We searched PubMed, Web of Science, Embase, African Journals Online, and clinicaltrials.gov from database inception to Feb 24, 2022 for randomised controlled trials, cross-sectional studies, and cohort studies that assessed urine lipoarabinomannan point-of-care tests and sputum NAATs for active tuberculosis detection in participants irrespective of tuberculosis symptoms, HIV status, CD4 cell count, or study setting. We excluded studies in which recruitment was not consecutive, systematic, or random; provision of sputum or urine was an inclusion criterion; less than 30 participants were diagnosed with tuberculosis; early research assays without clearly defined cutoffs were tested; and humans were not studied. We extracted study-level data, and authors of eligible studies were invited to contribute deidentified individual participant data. The main outcomes were the tuberculosis diagnostic yields of urine lipoarabinomannan tests, sputum NAATs, and SSM. Diagnostic yields were predicted using Bayesian random-effects and mixed-effects meta-analyses. This study is registered with PROSPERO, CRD42021230337.

FINDINGS
We identified 844 records, from which 20 datasets and 10 202 participants (4561 [45%] male participants and 5641 [55%] female participants) were included in the meta-analysis. All studies assessed sputum Xpert (MTB/RIF or Ultra, Cepheid, Sunnyvale, CA, USA) and urine Alere Determine TB LAM (AlereLAM, Abbott, Chicago, IL, USA) in people living with HIV aged 15 years or older. Nearly all (9957 [98%] of 10 202) participants provided urine, and 82% (8360 of 10 202) provided sputum within 2 days. In studies that enrolled unselected inpatients irrespective of tuberculosis symptoms, only 54% (1084 of 1993) of participants provided sputum, whereas 99% (1966 of 1993) provided urine. Diagnostic yield was 41% (95% credible interval [CrI] 15-66) for AlereLAM, 61% (95% Crl 25-88) for Xpert, and 32% (95% Crl 10-55) for SSM. Heterogeneity existed across studies in the diagnostic yield, influenced by CD4 cell count, tuberculosis symptoms, and clinical setting. In predefined subgroup analyses, all tests had higher yields in symptomatic participants, and AlereLAM yield was higher in those with low CD4 counts and inpatients. AlereLAM and Xpert yields were similar among inpatients in studies enrolling unselected participants who were not assessed for tuberculosis symptoms (51% vs 47%). AlereLAM and Xpert together had a yield of 71% in unselected inpatients, supporting the implementation of combined testing strategies.

INTERPRETATION
AlereLAM, with its rapid turnaround time and simplicity, should be prioritised to inform tuberculosis therapy among inpatients who are HIV-positive, regardless of symptoms or CD4 cell count. The yield of sputum-based tuberculosis tests is undermined by people living with HIV who cannot produce sputum, whereas nearly all participants are able to provide urine. The strengths of this meta-analysis are its large size, the carefully harmonised denominator, and the use of Bayesian random-effects and mixed-effects models to predict yields; however, data were geographically restricted, clinically diagnosed tuberculosis was not considered in the denominator, and little information exists on strategies for obtaining sputum samples.

FUNDING
FIND, the Global Alliance for Diagnostics.
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Journal Article > ResearchFull Text

Viral suppression and HIV-1 drug resistance 1 year after pragmatic transitioning to dolutegravir first-line therapy in Malawi: a prospective cohort study

Lancet HIV. 1 August 2022; Volume 9 (Issue 8); e544-e553.; DOI:10.1016/S2352-3018(22)00136-9
Schramm B, Temfack E, Descamps D, Nicholas S, Peytavin G,  et al.
Lancet HIV. 1 August 2022; Volume 9 (Issue 8); e544-e553.; DOI:10.1016/S2352-3018(22)00136-9
BACKGROUND
Many countries are now replacing non-nucleoside reverse transcriptase inhibitor (NNRTI)-based first-line antiretroviral therapy (ART) with a regimen containing tenofovir disoproxil fumarate, lamivudine, and dolutegravir (TLD). Recognising laboratory limitations, Malawi opted to transition those on NNRTI-based first-line ART to TLD without viral load testing. We aimed to assess viral load and HIV drug resistance during 1 year following transition to TLD without previous viral load testing.

METHODS
In this prospective cohort study, we monitored 1892 adults transitioning from NNRTI-based first-line ART to the TLD regimen in the Médecins Sans Frontières-supported decentralised HIV programme in Chiradzulu District, Malawi. Eligible adults were enrolled between Jan 17 and May 11, 2019, at Ndunde and Milepa health centres, and between March 8 and May 11, 2019, at the Boma clinic. Viral load at the start of the TLD regimen was assessed retrospectively and measured at month 3, 6, and 12, and additionally at month 18 for those ever viraemic (viral load ≥50 copies per mL). Dolutegravir minimal plasma concentrations (Cmin) were determined for individuals with viraemia. Drug-resistance testing was done at the start of TLD regimen and at viral failure (viral load ≥50 copies per mL, followed by viral load ≥500 copies per mL; resistance defined as Stanford score ≥15).

FINDINGS
Of 1892 participants who transitioned to the TLD regimen, 101 (5·3%) were viraemic at TLD start. 89 of 101 had drug-resistance testing with 31 participants (34·8%) with Lys65Arg mutation, 48 (53·9%) with Met184Val/Ile, and 42 (40·4%) with lamivudine and tenofovir disoproxil fumerate dual resistance. At month 12 (in the per-protocol population), 1725 (97·9% [95% CI 97·1–98·5]) of 1762 had viral loads of less than 50 copies per mL, including 83 (88·3% [80·0–94·0]) of 94 of those who were viraemic at baseline. At month 18, 35 (97·2% [85·5–99·9]) of 36 who were viraemic at TLD start with lamivudine and tenofovir disoproxil fumarate resistance and 27 (81·8% [64·5–93·0]) of 33 of those viraemic at baseline without resistance had viral load suppression. 14 of 1838 with at least two viral load tests upon transitioning had viral failure (all with at least one dolutegravir Cmin value <640 ng/mL; active threshold), suggesting suboptimal adherence. High baseline viral load was associated with viral failure (adjusted odds ratio [aOR] 14·1 [2·3–87·4] for 1000 to <10 000 copies per mL; aOR 64·4 [19·3–215·4] for ≥10 000 copies per mL). Two people with viral failure had dolutegravir resistance at 6 months (Arg263Lys or Gly118Arg mutation), both were viraemic with lamivudine and tenofovir disoproxil fumarate resistance at baseline.

INTERPRETATION
High viral load suppression 1 year after introduction of the TLD regimen supports the unconditional transition strategy in Malawi. However, high pre-transition viral load, ongoing adherence challenges, and possibly existing nucleoside reverse transcriptase inhibitor resistance can lead to rapid development of dolutegravir resistance in a few individuals. This finding highlights the importance of viral load monitoring and dolutegravir-resistance surveillance after mass transitioning to the TLD regimen.
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Journal Article > ResearchFull Text

Comparison of methods to correct survival estimates and survival regression analysis on a large HIV African cohort

PLOS One. 23 February 2012; Volume 7 (Issue 2); e31706.; DOI:10.1371/journal.pone.0031706
Henriques J, Pujades M, McGuire M, Szumilin E, Iwaz J,  et al.
PLOS One. 23 February 2012; Volume 7 (Issue 2); e31706.; DOI:10.1371/journal.pone.0031706
OBJECTIVE
The evaluation of HIV treatment programs is generally based on an estimation of survival among patients receiving antiretroviral treatment (ART). In large HIV programs, loss to follow-up (LFU) rates remain high despite active patient tracing, which is likely to bias survival estimates and survival regression analyses.

METHODS
We compared uncorrected survival estimates derived from routine program data with estimates obtained by applying six correction methods that use updated outcome data by a field survey targeting LFU patients in a rural HIV program in Malawi. These methods were based on double-sampling and differed according to the weights given to survival estimates in LFU and non-LFU subpopulations. We then proposed a correction of the survival regression analysis.

RESULTS
Among 6,727 HIV-infected adults receiving ART, 9% were LFU after one year. The uncorrected survival estimates from routine data were 91% in women and 84% in men. According to increasing sophistication of the correction methods, the corrected survival estimates ranged from 89% to 85% in women and 82% to 77% in men. The estimates derived from uncorrected regression analyses were highly biased for initial tuberculosis mortality ratios (RR; 95% CI: 1.07; 0.76-1.50 vs. 2.06 to 2.28 with different correction weights), Kaposi sarcoma diagnosis (2.11; 1.61-2.76 vs. 2.64 to 3.9), and year of ART initiation (1.40; 1.17-1.66 vs. 1.29 to 1.34).

CONCLUSIONS
In HIV programs with high LFU rates, the use of correction methods based on non-exhaustive double-sampling data are necessary to minimise the bias in survival estimates and survival regressions.
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Journal Article > ResearchFull Text

Highly active antiretroviral therapy in resource-poor settings: the experience of Médecins Sans Frontières

AIDS. 5 September 2003; Volume 17 (Issue 13); 1995-1997.; DOI: 10.1097/00002030-200309050-00023
Tassie JM, Szumilin E, Calmy A, Goemaere E
AIDS. 5 September 2003; Volume 17 (Issue 13); 1995-1997.; DOI: 10.1097/00002030-200309050-00023
We describe the short-term results of highly active antiretroviral therapy (HAART) in seven projects in low and middle income countries. A total of 743 adults were included, and clinical, immunological and virological responses were analysed. At 6 months, outcomes were similar to those observed in western countries, and the probability of remaining on treatment was 94%. The challenge now is to extend access to HAART to the millions in urgent need.More
Journal Article > ResearchFull Text

Characteristics, medical management and outcomes of survivors of sexual gender-based violence, Nairobi, Kenya

Public Health Action. 21 June 2013; Volume 3 (Issue 2); 109-12.; DOI:10.5588/pha.13.0012
Buard V, Van der Bergh R, Tayler-Smith K, Godia P, Sobry A,  et al.
Public Health Action. 21 June 2013; Volume 3 (Issue 2); 109-12.; DOI:10.5588/pha.13.0012
SETTING
Médecins Sans Frontières Clinic for sexual gender-based violence (SGBV), Nairobi, Kenya.

OBJECTIVES
Among survivors of SGBV in 2011, to describe demographic characteristics and episodes of sexual violence, medical management, pregnancy and human immunodeficiency virus (HIV) related outcomes.

DESIGN
Retrospective review of clinical records and SGBV register.

RESULTS
Survivors attending the clinic increased from seven in 2007 to 866 in 2011. Of the 866 survivors included, 92% were female, 34% were children and 54% knew the aggressor; 73% of the assaults occurred inside a home and most commonly in the evening or at night. Post-exposure prophylaxis for HIV was given to 536 (94%), prophylaxis for sexually transmitted infections to 731 (96%) and emergency contraception to 358 (83%) eligible patients. Hepatitis B and tetanus toxoid vaccinations were given to 774 survivors, but respectively only 46% and 14% received a second injection. Eight (4.5%) of 174 women who underwent urine pregnancy testing were positive at 1 month. Of 851 survivors HIV-tested at baseline, 96 (11%) were HIV-positive. None of the 220 (29%) HIV-negative individuals who returned for repeat HIV testing after 3 months was positive.

CONCLUSION
Acceptable, good quality SGBV medical care can be provided in large cities of sub-Saharan Africa, although further work is needed to improve follow-up interventions.
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Journal Article > ResearchFull Text

Therapeutic Failure of Melarsoprol Among Patients Treated for Late Stage T.b. Gambiense Human African Trypanosomiasis in Uganda

Bull Soc Pathol Exot. 1 July 1999
Legros D, Fournier C, Gastellu-Etchegorry M, Maiso F, Szumilin E
Bull Soc Pathol Exot. 1 July 1999
The failure rate of melarsoprol after treatment of late stage cases of Human African Trypanosomiasis (HAT) is usually under 7%, even though the drug has been used for such treatment over the past 50 years. We report a melarsoprol treatment failure rate of 26.9% among 428 patients treated in Northern Uganda. Whatever its origin, this observation, the first documented in a HAT focus, is alarming, particularly since no second line trypanocidal drug is actually available for the treatment of late stage HAT. We believe that the current worrisome situation of HAT in several African countries and the risk of emergence of other foci of resistance, argue in favour of a greater attention on the part of the scientific community and the pharmaceutical companies being paid to this problem.More