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1.
Vet Rec ; 195(1): iv, 2024 Jul 06.
Article de Anglais | MEDLINE | ID: mdl-38967196
2.
BMC Health Serv Res ; 24(1): 792, 2024 Jul 09.
Article de Anglais | MEDLINE | ID: mdl-38982430

RÉSUMÉ

BACKGROUND: Recently-updated global guidelines for cervical cancer screening incorporated new technologies-most significantly, the inclusion of HPV DNA detection as a primary screening test-but leave many implementation decisions at countries' discretion. We sought to develop recommendations for Malawi as a test case since it has the second-highest cervical cancer burden globally and high HIV prevalence. We incorporated updated epidemiologic data, the full range of ablation methods recommended, and a more nuanced representation of how HIV status intersects with cervical cancer risk and exposure to screening to model outcomes of different approaches to screening. METHODS: Using a Markov model, we estimate the relative health outcomes and costs of different approaches to cervical cancer screening among Malawian women. The model was parameterized using published data, and focused on comparing "triage" approaches-i.e., lesion treatment (cryotherapy or thermocoagulation) at differing frequencies and varying by HIV status. Health outcomes were quality-adjusted life years (QALYs) and deaths averted. The model was built using TreeAge Pro software. RESULTS: Thermocoagulation was more cost-effective than cryotherapy at all screening frequencies. Screening women once per decade would avert substantially more deaths than screening only once per lifetime, at relatively little additional cost. Moreover, at this frequency, it would be advisable to ensure that all women who screen positive receive treatment (rather than investing in further increases in screening frequency): for a similar gain in QALYs, it would cost more than four times as much to implement once-per-5 years screening with only 50% of women treated versus once-per-decade screening with 100% of women treated. Stratified screening schedules by HIV status was found to be an optimal approach. CONCLUSIONS: These results add new evidence about cost-effective approaches to cervical cancer screening in low-income countries. At relatively infrequent screening intervals, if resources are limited, it would be more cost-effective to invest in scaling up thermocoagulation for treatment before increasing the recommended screening frequency. In Malawi or countries in a similar stage of the HIV epidemic, a stratified approach that prioritizes more frequent screening for women living with HIV may be more cost-effective than population-wide recommendations that are HIV status neutral.


Sujet(s)
Analyse coût-bénéfice , Dépistage précoce du cancer , Chaines de Markov , Années de vie ajustées sur la qualité , Tumeurs du col de l'utérus , Humains , Femelle , Malawi/épidémiologie , Tumeurs du col de l'utérus/diagnostic , Tumeurs du col de l'utérus/thérapie , Tumeurs du col de l'utérus/économie , Dépistage précoce du cancer/économie , Dépistage précoce du cancer/méthodes , Adulte , Adulte d'âge moyen , Infections à VIH/diagnostic , Infections à VIH/épidémiologie , Cryothérapie/économie , Dépistage de masse/économie , Dépistage de masse/méthodes
3.
Proc Natl Acad Sci U S A ; 121(28): e2315677121, 2024 Jul 09.
Article de Anglais | MEDLINE | ID: mdl-38959039

RÉSUMÉ

In a context where pessimistic survival perceptions have been widespread as a result of the HIV/AIDS epidemic (Fig. 1 A), we study vaccine uptake and other health behaviors during the recent COVID-19 pandemic. Leveraging a longitudinal cohort study in rural Malawi that has been followed for up to 25 y, we document that a 2017 mortality risk information intervention designed to reduce pessimistic mortality perceptions (Fig. 1 B) resulted in improved health behavior, including COVID-19 vaccine uptake (Fig. 1 C). We also report indirect effects for siblings and household members. This was likely the result of a reinforcing process where the intervention triggered engagement with the healthcare system and stronger beliefs in the efficacy of modern biomedical treatments, which led to the adoption of health risk reduction behavior, including vaccine uptake. Our findings suggest that health information interventions focused on survival perceptions can be useful in promoting health behavior and participation in the formal healthcare system, even during health crises-such as the COVID-19 pandemic-that are unanticipated at the time of the intervention. We also note the importance of the intervention design, where establishing rapport, tailoring the content to the local context, and spending time with respondents to convey the information contributed to the salience of the message.


Sujet(s)
COVID-19 , Comportement en matière de santé , Humains , COVID-19/épidémiologie , COVID-19/mortalité , COVID-19/prévention et contrôle , Malawi/épidémiologie , Femelle , Mâle , Adulte , SARS-CoV-2 , Études longitudinales , Vaccins contre la COVID-19/administration et posologie , Vaccins contre la COVID-19/usage thérapeutique , Pandémies , Adulte d'âge moyen
4.
BMJ Open ; 14(7): e084120, 2024 Jul 05.
Article de Anglais | MEDLINE | ID: mdl-38969377

RÉSUMÉ

INTRODUCTION: The escalating consumption of ultra-processed foods (UPFs) among school-aged children in developing countries poses a significant threat to public health, contributing to the dual burden of malnutrition. In Malawi, where undernutrition coexists with a burgeoning obesity epidemic, understanding the determinants of UPF consumption and its impact on children's nutritional status is imperative. This study, conducted in Lilongwe, Malawi, aimed to investigate the association between UPF consumption, sociodemographic factors and the nutritional status of school-aged children. MATERIALS AND METHODS: 511 children aged 7-14 were recruited from 2 densely populated townships using systematic random sampling. Data on sociodemographic factors, UPF consumption and nutritional status were collected through face-to-face interviews and anthropometric measurements. UPF consumption was assessed using a validated Food Frequency Questionnaire while multinomial logistic regression was employed to analyse associations. RESULTS: Results revealed alarmingly high UPF consumption among children, particularly those high in sugar. Multinomial logistic regression identified significant predictors of malnutrition outcomes. Notably, children consuming UPFs more than three times a week were more likely to be malnourished. Overweight status was positively associated with sausage intake (ß=0.226, adjusted OR 1.254, 95% CI 1.004 to 1.566, p=0.046) and age (ß=0.020, adjusted OR=0.257, 95% CI 0.156 to 0.28, p=0.003). Conversely, underweight status was linked with residential location (ß=4.507, adjusted OR 0.01, 95% CI 0.000 to 0.281, p=0.006) and fizzy drinks (ß=1.071, adjusted OR 2.919, 95% CI 1.413 to 6.028, p=0.004). CONCLUSION: The high prevalence of UPF consumption among school-aged children is significantly associated with malnutrition. Moreover, sociodemographic factors influence UPF consumption, highlighting the need for targeted interventions to reduce malnutrition. These findings may inform public health policies to mitigate malnutrition among children in Malawi's urban communities.


Sujet(s)
Aliments de restauration rapide , Malnutrition , Obésité pédiatrique , Humains , Malawi/épidémiologie , Enfant , Mâle , Femelle , Études transversales , Aliments de restauration rapide/statistiques et données numériques , Adolescent , Obésité pédiatrique/épidémiologie , Malnutrition/épidémiologie , Population urbaine/statistiques et données numériques , État nutritionnel , Facteurs socioéconomiques , Modèles logistiques , Aliments transformés
5.
BMC Pediatr ; 23(Suppl 2): 657, 2024 Jul 08.
Article de Anglais | MEDLINE | ID: mdl-38977945

RÉSUMÉ

BACKGROUND: The emergence of COVID-19 precipitated containment policies (e.g., lockdowns, school closures, etc.). These policies disrupted healthcare, potentially eroding gains for Sustainable Development Goals including for neonatal mortality. Our analysis aimed to evaluate indirect effects of COVID-19 containment policies on neonatal admissions and mortality in 67 neonatal units across Kenya, Malawi, Nigeria, and Tanzania between January 2019 and December 2021. METHODS: The Oxford Stringency Index was applied to quantify COVID-19 policy stringency over time for Kenya, Malawi, Nigeria, and Tanzania. Stringency increased markedly between March and April 2020 for these four countries (although less so in Tanzania), therefore defining the point of interruption. We used March as the primary interruption month, with April for sensitivity analysis. Additional sensitivity analysis excluded data for March and April 2020, modelled the index as a continuous exposure, and examined models for each country. To evaluate changes in neonatal admissions and mortality based on this interruption period, a mixed effects segmented regression was applied. The unit of analysis was the neonatal unit (n = 67), with a total of 266,741 neonatal admissions (January 2019 to December 2021). RESULTS: Admission to neonatal units decreased by 15% overall from February to March 2020, with half of the 67 neonatal units showing a decline in admissions. Of the 34 neonatal units with a decline in admissions, 19 (28%) had a significant decrease of ≥ 20%. The month-to-month decrease in admissions was approximately 2% on average from March 2020 to December 2021. Despite the decline in admissions, we found no significant changes in overall inpatient neonatal mortality. The three sensitivity analyses provided consistent findings. CONCLUSION: COVID-19 containment measures had an impact on neonatal admissions, but no significant change in overall inpatient neonatal mortality was detected. Additional qualitative research in these facilities has explored possible reasons. Strengthening healthcare systems to endure unexpected events, such as pandemics, is critical in continuing progress towards achieving Sustainable Development Goals, including reducing neonatal deaths to less than 12 per 1000 live births by 2030.


Sujet(s)
COVID-19 , Mortalité infantile , Analyse de série chronologique interrompue , Humains , COVID-19/épidémiologie , COVID-19/prévention et contrôle , COVID-19/mortalité , Nouveau-né , Tanzanie/épidémiologie , Kenya/épidémiologie , Mortalité infantile/tendances , Malawi/épidémiologie , Nigeria/épidémiologie , Admission du patient/statistiques et données numériques , Unités de soins intensifs néonatals , Hospitalisation/statistiques et données numériques , Pandémies , Nourrisson
6.
BMC Pulm Med ; 24(1): 339, 2024 Jul 12.
Article de Anglais | MEDLINE | ID: mdl-38997676

RÉSUMÉ

BACKGROUND: Chronic lung disease (CLD) is common among children with HIV (CWH) including in those taking antiretroviral therapy (ART). Azithromycin has both antimicrobial and anti-inflammatory effects and has been effective in improving lung function in a variety of lung diseases. We investigated lung function trajectories among CWH with CLD on ART enrolled in a randomized controlled trial of adjuvant azithromycin. We also investigated factors that modified the effect of azithromycin on lung function. METHODS: The study used data from a double-blinded placebo-controlled trial conducted in Malawi and Zimbabwe of 48 weeks on azithromycin (BREATHE: ClinicalTrials.gov NCT02426112) among CWH aged 6 to 19 years taking ART for at least six months who had a forced expiratory volume in one second (FEV1) z-score <-1.0. Participants had a further follow-up period of 24 weeks after intervention cessation. FEV1, forced vital capacity (FVC) and FEV1/FVC were measured at baseline, 24, 48 and 72-weeks and z-scores values calculated. Generalized estimating equations (GEE) models were used to determine the mean effect of azithromycin on lung-function z-scores at each follow-up time point. RESULTS: Overall, 347 adolescents (51% male, median age 15 years) were randomized to azithromycin or placebo. The median duration on ART was 6.2 (interquartile range: 3.8-8.6) years and 56.2% had an HIV viral load < 1000copies/ml at baseline. At baseline, the mean FEV1 z-score was - 2.0 (0.7) with 44.7% (n = 155) having an FEV1 z-score <-2, and 10.1% had microbiological evidence of azithromycin resistance. In both trial arms, FEV1 and FVC z-scores improved by 24 weeks but appeared to decline thereafter. The adjusted overall mean difference in FEV1 z-score between the azithromycin and placebo arms was 0.004 [-0.08, 0.09] suggesting no azithromycin effect and this was similar for other lung function parameters. There was no evidence of interaction between azithromycin effect and baseline age, lung function, azithromycin resistance or HIV viral load. CONCLUSION: There was no observed azithromycin effect on lung function z-scores at any time point suggesting no therapeutic effect on lung function. TRIAL REGISTRATION: ClinicalTrials.gov NCT02426112. First registered on 24/04/2015.


Sujet(s)
Azithromycine , Infections à VIH , Maladies pulmonaires , Humains , Azithromycine/usage thérapeutique , Infections à VIH/traitement médicamenteux , Infections à VIH/complications , Mâle , Adolescent , Femelle , Enfant , Méthode en double aveugle , Volume expiratoire maximal par seconde/effets des médicaments et des substances chimiques , Maladie chronique , Capacité vitale , Maladies pulmonaires/traitement médicamenteux , Maladies pulmonaires/physiopathologie , Antibactériens/usage thérapeutique , Jeune adulte , Malawi , Poumon/physiopathologie , Poumon/effets des médicaments et des substances chimiques , Zimbabwe , Tests de la fonction respiratoire , Études longitudinales
7.
BMC Med Educ ; 24(1): 757, 2024 Jul 12.
Article de Anglais | MEDLINE | ID: mdl-38997697

RÉSUMÉ

BACKGROUND: Students' approaches to learning are of essence in nursing education. This is because nursing is a profession where classroom learning leads to clinical performance. Although the literature recognizes student's approaches to learning as a significant aspect affecting the quality of students' learning, studies suggest that quality of learning has not been highly achieved in Malawian nursing colleges. Currently, there is a scarcity of empirical data on the learning approaches that Malawian nursing and midwifery students in nursing colleges employ. This study assessed the different approaches to learning among nursing and midwifery students in selected Malawian nursing colleges. METHODS: This was a cross- sectional study that employed quantitative methods. The target population was nursing and midwifery students pursuing nursing diplomas from Nkhoma College of Nursing, Ekwendeni College of Health Sciences and Malawi College of Health Sciences. A total of 251 students were sampled randomly from the three nursing colleges. Data was collected through a self-administered questionnaire (R-SPQ-2 F) by Biggs. The data was analyzed using chi-square and binary logistic regression. In this study Cronbach's alpha was 0.6. RESULTS: Most students had used a deep approach to learning (M = 3.201, SD = 0.623) than the surface approach (M = 2.757, SD = 0.732). Being in the age category of 16-20 had more likelihood of adopting a surface approach to learning compared to other age categories (X2 = 7.669, DF 2, P = .02). Students from Malawi College of Health Sciences were more likely to adopt a surface approach to learning compared to students from Nkhoma Nursing College and Ekwendeni College of Health Sciences (X2 = 12.388, df = 2, P = .002). CONCLUSION: A deep approach to learning emerged as the most preferred approach to learning which indirectly implies that most students attain meaningful learning. Age and environment are some of the key determinants associated with different learning approaches. More attention should be given to younger students during teaching and learning to promote deep learning.


Sujet(s)
Apprentissage , Élève infirmier , Humains , Études transversales , Malawi , Femelle , Mâle , Jeune adulte , Adulte , Enquêtes et questionnaires , Écoles d'infirmières , Formation au diplôme infirmier (USA)
8.
J Int AIDS Soc ; 27 Suppl 2: e26277, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-38988038

RÉSUMÉ

INTRODUCTION: Programme Science (PS) and community-led monitoring (CLM) intersect in unexpected and promising ways. This commentary examines a CLM initiative in Malawi and South Africa to highlight the crucial role of CLM in bolstering the PS framework. By leveraging data sources often overlooked by conventional research and evaluation approaches, CLM emerges as a pivotal element in enhancing programme effectiveness. This paper delineates the fundamental principles of CLM, presents programme outcomes derived from CLM methodologies and contextualizes these findings within the broader framework of PS. DISCUSSION: The Citizen Science Project implements CLM continuously at 33 health facilities: 14 in Malawi (eight in Kasungu District and six in Dedza District), and 19 in South Africa (all in the West Rand District), representing a total catchment area of 989,848 people. Monitoring indicators are developed in an iterative process with community groups. The indicators are unique to each country, but both focus on the uptake of health services (quantitative) and barriers to access (qualitative). Monthly clinic records surveys capture 34 indicators in Malawi and 20 in South Africa and are supplemented by qualitative interviews with care recipients and healthcare workers. Qualitative interviews provide additional granularity and help confirm and explain the more macro trends in service coverage as described in quantitative data. The resulting data analysis reveals key themes that help stakeholders and decision-makers to solve problems collaboratively. Noteworthy outcomes include a substantial increase in multi-month dispensing of antiretroviral therapy (ART) during COVID-19 (from 6% to 31%) with a subsequent recovery surpassing of HIV service benchmarks in Malawi post-pandemic. CONCLUSIONS: While quantifying direct impact remains challenging due to the project's design, CLM proves to be a robust methodology that generates credible data and produces impactful outcomes. Its potential extends beyond the health sector, empowering community leadership and fostering interventions aligned with community needs. As CLM continues to evolve, its integration into PS promises to improve relevance, quality and impact across diverse disciplines.


Sujet(s)
Science citoyenne , Infections à VIH , Malawi , République d'Afrique du Sud , Humains , Infections à VIH/traitement médicamenteux , Science citoyenne/méthodes , Évaluation de programme , COVID-19/épidémiologie , Participation communautaire , Femelle , Mâle
9.
Environ Monit Assess ; 196(8): 741, 2024 Jul 17.
Article de Anglais | MEDLINE | ID: mdl-39017942

RÉSUMÉ

Land use and land cover (LULC) changes are inevitable outcomes of socioeconomic changes and greatly affect ecosystem services. Our study addresses the critical gap in the existing literature by providing the first comprehensive national analysis of LULC changes and their impacts on ecosystem service values (ESVs) in Malawi. We assessed changes in ecosystem service values (ESVs) in response to LULC changes using the benefit transfer method in ArcGIS 10.6 software. Our findings revealed a significant increase in grasslands, croplands, and urban areas and a notable decline in forests, shrubs, wetlands, and water bodies. Grassland, cropland, and built-up areas expanded by 52%, 1%, and 23.2%, respectively. In contrast, permanent wetlands, barren land, and water bodies declined by 27.6%, 34.3%, and 1%, respectively. The ESV declined from US$90.87 billion in 2001 to US$85.60 billion in 2022, marking a 5.8% reduction. Provisioning services increased by 0.5% while regulating, supporting, and cultural ecosystem service functions declined by 12.2%, 3.16%, and 3.22%, respectively. The increase in provisioning services was due to the expansion of cropland. However, the loss of regulating, supporting, and cultural services was mainly due to the loss of natural ecosystems. Thus, environmental policy should prioritise the conservation and restoration of natural ecosystems to enhance the ESV of Malawi.


Sujet(s)
Agriculture , Conservation des ressources naturelles , Écosystème , Surveillance de l'environnement , Malawi , Conservation des ressources naturelles/méthodes , Zones humides , Forêts , Prairie
10.
JMIR Public Health Surveill ; 10: e49539, 2024 Jul 16.
Article de Anglais | MEDLINE | ID: mdl-39012690

RÉSUMÉ

BACKGROUND: Cholera-like diarrheal disease (CLDD) outbreaks are complex and influenced by environmental factors, socioeconomic conditions, and population dynamics, leading to limitations in traditional surveillance methods. In Malawi, cholera is considered an endemic disease. Its epidemiological profile is characterized by seasonal patterns, often coinciding with the rainy season when contamination of water sources is more likely. However, the outbreak that began in March 2022 has extended to the dry season, with deaths reported in all 29 districts. It is considered the worst outbreak in the past 10 years. OBJECTIVE: This study aims to evaluate the feasibility and outcomes of participatory surveillance (PS) using interactive voice response (IVR) technology for the early detection of CLDD outbreaks in Malawi. METHODS: This longitudinal cohort study followed 740 households in rural settings in Malawi for 24 weeks. The survey tool was designed to have 10 symptom questions collected every week. The proxies' rationale was related to exanthematic, ictero-hemorragica for endemic diseases or events, diarrhea and respiratory/targeting acute diseases or events, and diarrhea and respiratory/targeting seasonal diseases or events. This work will focus only on the CLDD as a proxy for gastroenteritis and cholera. In this study, CLDD was defined as cases where reports indicated diarrhea combined with either fever or vomiting/nausea. RESULTS: During the study period, our data comprised 16,280 observations, with an average weekly participation rate of 35%. Maganga TA had the highest average of completed calls, at 144.83 (SD 10.587), while Ndindi TA had an average of 123.66 (SD 13.176) completed calls. Our findings demonstrate that this method might be effective in identifying CLDD with a notable and consistent signal captured over time (R2=0.681404). Participation rates were slightly higher at the beginning of the study and decreased over time, thanks to the sensitization activities rolled out at the CBCCs level. In terms of the attack rates for CLDD, we observed similar rates between Maganga TA and Ndindi TA, at 16% and 15%, respectively. CONCLUSIONS: PS has proven to be valuable for the early detection of epidemics. IVR technology is a promising approach for disease surveillance in rural villages in Africa, where access to health care and traditional disease surveillance methods may be limited. This study highlights the feasibility and potential of IVR technology for the timely and comprehensive reporting of disease incidence, symptoms, and behaviors in resource-limited settings.


Sujet(s)
Choléra , Diarrhée , Épidémies de maladies , Population rurale , Malawi/épidémiologie , Humains , Études prospectives , Population rurale/statistiques et données numériques , Diarrhée/épidémiologie , Choléra/épidémiologie , Mâle , Femelle , Adulte , Enfant d'âge préscolaire , Études longitudinales , Études de cohortes , Enfant , Adolescent , Nourrisson , Diagnostic précoce , Adulte d'âge moyen , Surveillance de la population/méthodes
11.
Microb Genom ; 10(6)2024 Jun.
Article de Anglais | MEDLINE | ID: mdl-38896467

RÉSUMÉ

Since the introduction of the 13-valent pneumococcal conjugate vaccine (PCV13) in Malawi in 2011, there has been persistent carriage of vaccine serotype (VT) Streptococcus pneumoniae, despite high vaccine coverage. To determine if there has been a genetic change within the VT capsule polysaccharide (cps) loci since the vaccine's introduction, we compared 1022 whole-genome-sequenced VT isolates from 1998 to 2019. We identified the clonal expansion of a multidrug-resistant, penicillin non-susceptible serotype 23F GPSC14-ST2059 lineage, a serotype 14 GPSC9-ST782 lineage and a novel serotype 14 sequence type GPSC9-ST18728 lineage. Serotype 23F GPSC14-ST2059 had an I253T mutation within the capsule oligosaccharide repeat unit polymerase Wzy protein, which is predicted in silico to alter the protein pocket cavity. Moreover, serotype 23F GPSC14-ST2059 had SNPs in the DNA binding sites for the cps transcriptional repressors CspR and SpxR. Serotype 14 GPSC9-ST782 harbours a non-truncated version of the large repetitive protein (Lrp), containing a Cna protein B-type domain which is also present in proteins associated with infection and colonisation. These emergent lineages also harboured genes associated with antibiotic resistance, and the promotion of colonisation and infection which were absent in other lineages of the same serotype. Together these data suggest that in addition to serotype replacement, modifications of the capsule locus associated with changes in virulence factor expression and antibiotic resistance may promote vaccine escape. In summary, the study highlights that the persistence of vaccine serotype carriage despite high vaccine coverage in Malawi may be partly caused by expansion of VT lineages post-PCV13 rollout.


Sujet(s)
Capsules bactériennes , Infections à pneumocoques , Vaccins antipneumococciques , Sérogroupe , Streptococcus pneumoniae , Streptococcus pneumoniae/génétique , Streptococcus pneumoniae/classification , Streptococcus pneumoniae/pathogénicité , Vaccins antipneumococciques/immunologie , Humains , Malawi , Capsules bactériennes/génétique , Infections à pneumocoques/microbiologie , Infections à pneumocoques/prévention et contrôle , Vaccins conjugués , Polyosides bactériens/génétique , Polyosides bactériens/immunologie , Virulence/génétique , Génotype , Séquençage du génome entier , Protéines bactériennes/génétique , Facteurs de virulence/génétique , Enfant d'âge préscolaire , Polymorphisme de nucléotide simple , Nourrisson , Mâle
12.
BMC Infect Dis ; 24(1): 637, 2024 Jun 26.
Article de Anglais | MEDLINE | ID: mdl-38926682

RÉSUMÉ

INTRODUCTION: Chronic lung disease is a major cause of morbidity in African children with HIV infection; however, the microbial determinants of HIV-associated chronic lung disease (HCLD) remain poorly understood. We conducted a case-control study to investigate the prevalence and densities of respiratory microbes among pneumococcal conjugate vaccine (PCV)-naive children with (HCLD +) and without HCLD (HCLD-) established on antiretroviral treatment (ART). METHODS: Nasopharyngeal swabs collected from HCLD + (defined as forced-expiratory-volume/second < -1.0 without reversibility postbronchodilation) and age-, site-, and duration-of-ART-matched HCLD- participants aged between 6-19 years enrolled in Zimbabwe and Malawi (BREATHE trial-NCT02426112) were tested for 94 pneumococcal serotypes together with twelve bacteria, including Streptococcus pneumoniae (SP), Staphylococcus aureus (SA), Haemophilus influenzae (HI), Moraxella catarrhalis (MC), and eight viruses, including human rhinovirus (HRV), respiratory syncytial virus A or B, and human metapneumovirus, using nanofluidic qPCR (Standard BioTools formerly known as Fluidigm). Fisher's exact test and logistic regression analysis were used for between-group comparisons and risk factors associated with common respiratory microbes, respectively. RESULTS: A total of 345 participants (287 HCLD + , 58 HCLD-; median age, 15.5 years [IQR = 12.8-18], females, 52%) were included in the final analysis. The prevalence of SP (40%[116/287] vs. 21%[12/58], p = 0.005) and HRV (7%[21/287] vs. 0%[0/58], p = 0.032) were higher in HCLD + participants compared to HCLD- participants. Of the participants positive for SP (116 HCLD + & 12 HCLD-), 66% [85/128] had non-PCV-13 serotypes detected. Overall, PCV-13 serotypes (4, 19A, 19F: 16% [7/43] each) and NVT 13 and 21 (9% [8/85] each) predominated. The densities of HI (2 × 104 genomic equivalents [GE/ml] vs. 3 × 102 GE/ml, p = 0.006) and MC (1 × 104 GE/ml vs. 1 × 103 GE/ml, p = 0.031) were higher in HCLD + compared to HCLD-. Bacterial codetection (≥ any 2 bacteria) was higher in the HCLD + group (36% [114/287] vs. (19% [11/58]), (p = 0.014), with SP and HI codetection (HCLD + : 30% [86/287] vs. HCLD-: 12% [7/58], p = 0.005) predominating. Viruses (predominantly HRV) were detected only in HCLD + participants. Lastly, participants with a history of previous tuberculosis treatment were more likely to carry SP (adjusted odds ratio (aOR): 1.9 [1.1 -3.2], p = 0.021) or HI (aOR: 2.0 [1.2 - 3.3], p = 0.011), while those who used ART for ≥ 2 years were less likely to carry HI (aOR: 0.3 [0.1 - 0.8], p = 0.005) and MC (aOR: 0.4 [0.1 - 0.9], p = 0.039). CONCLUSION: Children with HCLD + were more likely to be colonized by SP and HRV and had higher HI and MC bacterial loads in their nasopharynx. The role of SP, HI, and HRV in the pathogenesis of CLD, including how they influence the risk of acute exacerbations, should be studied further. TRIAL REGISTRATION: The BREATHE trial (ClinicalTrials.gov Identifier: NCT02426112 , registered date: 24 April 2015).


Sujet(s)
Infections à VIH , Humains , Études cas-témoins , Adolescent , Enfant , Mâle , Femelle , Infections à VIH/complications , Infections à VIH/microbiologie , Infections à VIH/épidémiologie , Zimbabwe/épidémiologie , Malawi/épidémiologie , Maladies pulmonaires/microbiologie , Maladies pulmonaires/virologie , Maladies pulmonaires/épidémiologie , Jeune adulte , Maladie chronique , Bactéries/isolement et purification , Bactéries/classification , Bactéries/génétique , Virus/isolement et purification , Virus/classification , Virus/génétique , Infections de l'appareil respiratoire/microbiologie , Infections de l'appareil respiratoire/virologie , Infections de l'appareil respiratoire/épidémiologie , Streptococcus pneumoniae/isolement et purification , Appareil respiratoire/microbiologie , Appareil respiratoire/virologie
13.
BMC Public Health ; 24(1): 1483, 2024 Jun 03.
Article de Anglais | MEDLINE | ID: mdl-38831266

RÉSUMÉ

BACKGROUND: HIV prevention remains a global priority, especially in sub-Saharan Africa. Our research team previously developed an evidence-based peer group program for HIV prevention called Mzake ndi Mzake (Friend to Friend). A community-engaged collaboration adapted the program for community ownership and implementation. Here we report whether this HIV prevention program, implemented by community volunteers, increased condom use among sexually active individuals in rural Malawi. METHODS: Three communities sequentially rolled out the program. Effectiveness was evaluated using a stepped wedge design. Repeated surveys 11-13 months apart were conducted between 2016 and 2019. At Time 1, no community had offered the intervention. At Time 2, the first community had offered the intervention and two had not (control group). At Time 3, two communities had offered the intervention and one had not (control group). We used two condom use indicators; condom use frequency in the last 2 months (N = 771) and condom use at last sex (N = 880). The analytical sample included all sexually active persons answering that question at one or more time points. Mixed-effects cumulative logit and Generalized Estimating Equation (GEE) models were used to model the two condom indicators over time, controlling for demographic factors, UNAIDS HIV knowledge, safer sex self-efficacy and partner communication. RESULTS: This peer group intervention implemented by trained community volunteers increased both condom use indicators at Times 2 and 3. In the final adjusted models with non-significant factors removed, condom use in the last two months increased for the intervention group vs. control group [Time 2: Adjusted Odds Ratio (AOR) = 1.59 (1.15, 2.21); Time 3: AOR 2.01 (1.23, 3.30)]. Similarly, condom use at last sex increased for the intervention group vs. control group [Time 2: AOR = 1.48 (1.08, 2.03); Time 3: AOR 1.81 (1.13, 2.90)]. Other significant predictors of greater condom use were also described. Although the intervention increased UNAIDS HIV knowledge, knowledge did not predict condom use. CONCLUSIONS: In this community-engaged implementation study, an evidence-based peer group program for HIV prevention increased condom use when delivered by trained community volunteers. Community ownership and program delivery by trained volunteers offer an innovative and cost-effective strategy to address ongoing HIV prevention needs without overburdening healthcare systems in sub-Saharan Africa. TRIAL REGISTRATION: Clinical Trials.gov NCT02765659 Registered May 6, 2016.


Sujet(s)
Préservatifs masculins , Infections à VIH , Groupe de pairs , Rapports sexuels protégés , Bénévoles , Humains , Malawi , Mâle , Préservatifs masculins/statistiques et données numériques , Femelle , Adulte , Infections à VIH/prévention et contrôle , Bénévoles/psychologie , Jeune adulte , Adolescent , Évaluation de programme , Population rurale , Adulte d'âge moyen , Promotion de la santé/méthodes
14.
Afr J Prim Health Care Fam Med ; 16(1): e1-e9, 2024 May 31.
Article de Anglais | MEDLINE | ID: mdl-38832376

RÉSUMÉ

BACKGROUND:  Few interventions are documented to meet person-centred needs of older people with serious multimorbidity in low- and middle-income countries where access to palliative care is limited. Most of the care in these settings is delivered by primary care health workers. AIM:  This study reports the development and acceptability testing of a communication skills training and mentorship intervention for primary health care workers in Malawi. SETTING:  This study was conducted at Mangochi District Hospital in the south-eastern region of Malawi. METHODS:  Twelve primary health care workers (four clinical officers and eight nurses) working in the primary care clinics received the intervention. The intervention was designed using modified nominal group technique, informed by stakeholder interviews and a theory of change workshop. Acceptability is reported from thematic analysis of a focus group discussion with primary health care workers who received the intervention using NVivo version 14. RESULTS:  Older persons with serious multi-morbidity and their caregivers identified a need for enhanced communication with their healthcare providers. This helped to inform the development of a communication training skills and mentorship intervention package based on the local best practice six-step Ask-Ask-Tell-Ask-Ask-Plan framework. Primary health care workers reported that the intervention supported person-centred communication and improved the quality of holistic assessments, although space, workload and availability of medication limited the implementation of person-centred communication. CONCLUSION:  The Ask-Ask-Tell-Ask-Ask-Plan framework, supported person-centered communication and improved the quality of holistic assessment.Contribution: This intervention offers an affordable, local model for integrating person-centered palliative care in resource-limited primary healthcare settings.


Sujet(s)
Pays en voie de développement , Groupes de discussion , Multimorbidité , Soins centrés sur le patient , Soins de santé primaires , Humains , Malawi , Sujet âgé , Femelle , Mâle , Communication , Personnel de santé/enseignement et éducation , Adulte , Adulte d'âge moyen , Amélioration de la qualité , Soins palliatifs
15.
BMC Womens Health ; 24(1): 335, 2024 Jun 08.
Article de Anglais | MEDLINE | ID: mdl-38851734

RÉSUMÉ

BACKGROUND: Teenage pregnancies are a global concern. Malawi is one of the countries with the highest teenage pregnancy rates despite government efforts to reverse the situation and yet studies on determinants of teenage pregnancy are rare with some factors remaining unexplored. Therefore, this study aimed to identify factors associated with teenage pregnancies in Malawi. METHODS: This was a community-based case-control study that used secondary data from the 2015-16 Malawi Demographic and Health Survey from all 28 districts of Malawi. The study population comprised women aged 20-24 who participated in the survey. The study ran from September 2021 to October 2022 and used a sample size of 3,435 participants who were all women aged 20-24 in the dataset who met the inclusion criteria. Data were analysed using Stata 16 software. Logistic regression analyses were used to determine factors. Variables with a P value of < 0.1 in the univariable analysis were included in the multivariable analyses, where statistical significance was obtained at a P value < 0. 05. RESULTS: Data on 3435 participants were analysed. In multivariable analyses: no teenage marriage (AOR 0.13); secondary education (AOR 0.26); higher education (AOR 0.39); richest category of wealth index (AOR 0.51), use of contraception (AOR 3.08), domestic violence by father or mother (AOR 0.37) were found to be significant factors. CONCLUSION: This study identified determinants of teenage pregnancy. The government has to sustain and expand initiatives that increase protection from teenage pregnancy, reinforce the implementation of amended marriage legislation, introduce policies to improve the socioeconomic status of vulnerable girls and increase contraceptive use among adolescent girls before their first pregnancy. Further research is also recommended to resolve inconclusive results.


Sujet(s)
Grossesse de l'adolescente , Humains , Femelle , Grossesse de l'adolescente/statistiques et données numériques , Malawi , Grossesse , Études cas-témoins , Adolescent , Jeune adulte , Comportement contraceptif/statistiques et données numériques , Mariage/statistiques et données numériques , Facteurs socioéconomiques , Facteurs de risque , Niveau d'instruction , Contraception/statistiques et données numériques , Modèles logistiques
16.
BMJ Paediatr Open ; 8(1)2024 Jun 08.
Article de Anglais | MEDLINE | ID: mdl-38851219

RÉSUMÉ

RATIONALE: Since the first documentation of skin changes in malnutrition in the early 18th century, various hair and skin changes have been reported in severely malnourished children globally. We aimed to describe the frequency and types of skin conditions in children admitted with acute illness to Queen Elizabeth Central Hospital, Blantyre, Malawi across a spectrum of nutritional status and validate an existing skin assessment tool. METHODS: Children between 1 week and 23 months of age with acute illness were enrolled and stratified by anthropometry. Standardised photographs were taken, and three dermatologists assessed skin changes and scored each child according to the SCORDoK tool. RESULTS: Among 103 children, median age of 12 months, 31 (30%) had severe wasting, 11 (11%) kwashiorkor (nutritional oedema), 20 (19%) had moderate wasting, 41 (40%) had no nutritional wasting and 18 (17%) a positive HIV antibody test. Six (5.8%) of the included patients died. 51 (50%) of children presented with at least one skin change. Pigmentary changes were the most common, observed in 35 (34%), with hair loss and bullae, erosions and desquamation the second most prevalent skin condition. Common diagnoses were congenital dermal melanocytosis, diaper dermatitis, eczema and postinflammatory hyperpigmentation. Severe skin changes like flaky paint dermatosis were rarely identified. Inter-rater variability calculations showed only fair agreement (overall Fleiss' kappa 0.25) while intrarater variability had a fair-moderate agreement (Cohen's kappa score of 0.47-0.58). DISCUSSION: Skin changes in hospitalised children with an acute illness and stratified according to nutritional status were not as prevalent as historically reported. Dermatological assessment by means of the SKORDoK tool using photographs is less reliable than expected.


Sujet(s)
État nutritionnel , Humains , Nourrisson , Malawi/épidémiologie , Mâle , Femelle , Études prospectives , Maladie aigüe , Nouveau-né , Maladies de la peau/épidémiologie , Maladies de la peau/anatomopathologie , Maladies de la peau/diagnostic , Hospitalisation/statistiques et données numériques , Kwashiorkor/épidémiologie , Kwashiorkor/diagnostic , Peau/anatomopathologie
17.
Hum Resour Health ; 22(1): 43, 2024 Jun 24.
Article de Anglais | MEDLINE | ID: mdl-38915096

RÉSUMÉ

BACKGROUND: Physicians and associate (non-physician) clinicians conduct cesarean sections in Tanzania and Malawi. Urogenital fistulas may occur as complications of cesarean section. Location and circumstances can indicate iatrogenic origin as opposed to ischemic injury following prolonged, obstructed labor. METHODS: This retrospective review assessed the frequency of iatrogenic urogenital fistulas following cesarean sections conducted by either associate clinicians or physicians in Tanzania and Malawi. It focuses on 325 women with iatrogenic fistulas among 1290 women who had fistulas after cesarean birth in Tanzania and Malawi between 1994 and 2017. An equivalence test compared the proportion of iatrogenic fistulas after cesarean sections performed by associate clinicians and physicians (equivalence margin = 0.135). Logistic regression was used to model the occurrence of iatrogenic fistula after cesarean section, controlling for cadre, date, maternal age, previous abdominal surgery and parity. RESULTS: Associate clinicians attended 1119/1290 (86.7%) cesarean births leading to fistulas, while physicians attended 171/1290 (13.3%). Iatrogenic fistulas occurred in 275/1119 (24.6%) cesarean births by associate clinicians and in 50/171 (29.2%) cesarean births by physicians. The risk difference and 90% confidence interval were entirely contained within an equivalence margin of 13.5%, supporting a conclusion of equivalence between the two cadres. The odds of iatrogenic fistula after cesarean section were not statistically significantly different between associate clinicians and physicians (aOR 0.90; 95% CI 0.61-1.33). CONCLUSIONS: Associate clinicians appear equivalent to physicians performing cesarean sections in terms of iatrogenic fistula risk. Lower iatrogenic proportions for associate clinicians could reflect different caseloads. The occurrence of iatrogenic fistulas illustrates the importance of appropriate labor management and cesarean section decision-making, irrespective of health provider cadre. Given the noninferior performance and lower costs of employing associate clinicians, other countries with insufficient and/or unequally distributed health workforces could consider task-shifting cesarean sections to associate clinicians.


Sujet(s)
Césarienne , Maladie iatrogène , Médecins , Humains , Femelle , Césarienne/effets indésirables , Malawi/épidémiologie , Tanzanie/épidémiologie , Études rétrospectives , Grossesse , Adulte , Maladie iatrogène/épidémiologie , Jeune adulte , Fistule/étiologie , Fistule/épidémiologie
18.
J Environ Manage ; 363: 121398, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-38852404

RÉSUMÉ

Scaling irrigated agriculture is a global strategy to mitigate food insecurity concerns. While expanding irrigated agriculture is critical to meeting food production demands, it is important to consider how these land use and land cover changes (LULCC) may alter the water resources of landscapes and impact the spatiotemporal epidemiology of disease. Here, a generalizable method is presented to inform irrigation development decision-making aimed at increasing crop production through irrigation while simultaneously mitigating malaria risk to surrounding communities. Changes to the spatiotemporal patterns of malaria vector (Anopheles gambiae s.s.) suitability, driven by irrigated agricultural expansion, are presented for Malawi's rainy and dry seasons. The methods presented may be applied to other geographical areas where sufficient irrigation and malaria prevalence data are available. Results show that approximately 8.60% and 1.78% of Malawi is maximally suitable for An. gambiae s.s. breeding in the rainy and dry seasons, respectively. However, the proposed LULCC from irrigated agriculture increases the maximally suitable land area in both seasons: 15.16% (rainy) and 2.17% (dry). Proposed irrigation development sites are analyzed and ranked according to their likelihood of increasing malaria risk for those closest to the schemes. Results illustrate how geospatial information on the anticipated change to the malaria landscape driven by increasing irrigated agricultural extent can assist in altering development plans, amending policies, or reassessing water resource management strategies to mitigate expected changes in malaria risk.


Sujet(s)
Irrigation agricole , Paludisme , Ressources en eau , Paludisme/prévention et contrôle , Malawi , Maladies vectorielles/prévention et contrôle , Animaux , Saisons , Agriculture/méthodes , Anopheles
19.
BMJ Open ; 14(6): e088263, 2024 Jun 13.
Article de Anglais | MEDLINE | ID: mdl-38871663

RÉSUMÉ

INTRODUCTION: Early childhood development forms the foundations for functioning later in life. Thus, accurate monitoring of developmental trajectories is critical. However, such monitoring often relies on time-intensive assessments which necessitate administration by skilled professionals. This difficulty is exacerbated in low-resource settings where such professionals are predominantly concentrated in urban and often private clinics, making them inaccessible to many. This geographic and economic inaccessibility contributes to a significant 'detection gap' where many children who might benefit from support remain undetected. The Scalable Transdiagnostic Early Assessment of Mental Health (STREAM) project aims to bridge this gap by developing an open-source, scalable, tablet-based platform administered by non-specialist workers to assess motor, social and cognitive developmental status. The goal is to deploy STREAM through public health initiatives, maximising opportunities for effective early interventions. METHODS AND ANALYSIS: The STREAM project will enrol and assess 4000 children aged 0-6 years from Malawi (n=2000) and India (n=2000). It integrates three established developmental assessment tools measuring motor, social and cognitive functioning using gamified tasks, observation checklists, parent-report and audio-video recordings. Domain scores for motor, social and cognitive functioning will be developed and assessed for their validity and reliability. These domain scores will then be used to construct age-adjusted developmental reference curves. ETHICS AND DISSEMINATION: Ethical approval has been obtained from local review boards at each site (India: Sangath Institutional Review Board; All India Institute of Medical Science (AIIMS) Ethics Committee; Indian Council of Medical Research-Health Ministry Screening Committee; Malawi: College of Medicine Research and Ethics Committee; Malawi Ministry of Health-Blantyre District Health Office). The study adheres to Good Clinical Practice standards and the ethical guidelines of the 6th (2008) Declaration of Helsinki. Findings from STREAM will be disseminated to participating families, healthcare professionals, policymakers, educators and researchers, at local, national and international levels through meetings, academic journals and conferences.


Sujet(s)
Développement de l'enfant , Santé mentale , Humains , Enfant d'âge préscolaire , Nourrisson , Enfant , Inde , Malawi , Femelle , Nouveau-né , Mâle , Reproductibilité des résultats , Plan de recherche
20.
BMJ Paediatr Open ; 8(1)2024 Jun 21.
Article de Anglais | MEDLINE | ID: mdl-38906562

RÉSUMÉ

We conducted a propensity score-matched multivariable regression analysis of 1050 culture-negative neonatal sepsis cases in Malawi, where 160 (15.2%) died. Mortality among neonates with culture-negative sepsis was associated with very low birth weight (adjusted OR (AOR) 12.82, 95% CI 1.23 to 137.49), respiratory distress syndrome (AOR 13.20, 95% CI 2.58 to 83.66), a low Apgar score at 1 min (AOR 3.50, 95% CI 1.21 to 10.72) and at 5 min (AOR 4.77, 95% CI 1.94 to 12.50). Addressing maternal and perinatal factors around health and delivery of care is key to improving outcomes in the context of culture-negative sepsis in neonates from low-income country settings like Malawi.


Sujet(s)
Sepsis néonatal , Score de propension , Humains , Malawi/épidémiologie , Nouveau-né , Sepsis néonatal/mortalité , Femelle , Facteurs de risque , Mâle , Score d'Apgar , Nourrisson très faible poids naissance , Syndrome de détresse respiratoire du nouveau-né/mortalité
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