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Malawi-Liverpool-Wellcome Trust Clinica... Publications | LitMetric

980 results match your criteria: "Malawi-Liverpool-Wellcome Trust Clinical Research Programme[Affiliation]"

Aim: The development of an evidence-based algorithm for the clinical management of deviations in maternal temperature during labour and childbirth.

Population: Pregnant women at any stage of labour, with singleton, term (37-42 weeks) pregnancies at low risk of developing complications.

Setting: Health facilities in low- and middle-income countries.

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Background: Human immunodeficiency virus-exposed uninfected (HEU) infants are a rapidly expanding population in sub-Saharan Africa and are highly susceptible to encapsulated bacterial disease in the first year of life. The mechanism of this increased risk is still poorly understood. We investigated whether human immunodeficiency virus (HIV)-exposure dysregulates HEU immunity, vaccine-antibody production, and human herpes virus amplify this effect.

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Background: Binding and neutralising anti-Spike antibodies play a key role in immune defence against SARS-CoV-2 infection. Since it is known that antibodies wane with time and new immune-evasive variants are emerging, we aimed to assess the dynamics of anti-Spike antibodies in an African adult population with prior SARS-CoV-2 infection and to determine the effect of subsequent COVID-19 vaccination.

Methods: Using a prospective cohort design, we recruited adults with prior laboratory-confirmed mild/moderate COVID-19 in Blantyre, Malawi, and followed them up for 270 days (n = 52).

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Following the introduction of live-attenuated rotavirus vaccines in many countries, a notable reduction in deaths and hospitalisations associated with diarrhoea in children <5 years of age has been reported. There is growing evidence to suggest that live-attenuated vaccines also provide protection against other infections beyond the vaccine-targeted pathogens. These so called off-target effects of vaccination have been associated with the tuberculosis vaccine Bacille Calmette Guérin (BCG), measles, oral polio and recently salmonella vaccines, and are thought to be mediated by modified innate and possibly adaptive immunity.

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Single-Dose Liposomal Amphotericin B Treatment for Cryptococcal Meningitis.

N Engl J Med

March 2022

From the Department of Clinical Research, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine (J.N.J., D.S.L., N.Y.), the Institute for Infection and Immunity, St. George's University London (A.L., S.F.M., T.S.H.), and the Clinical Academic Group in Infection and Immunity, St. George's University Hospitals NHS Foundation Trust (T.S.H.), London, Liverpool School of Tropical Medicine (H.C.M., E.W., D.W., D.G.L., S. Jaffar) and the Department of Public Health, Policy, and Systems, Institute of Population Health (T.C.), and the Department of Pharmacology and Therapeutics, Institute of Systems, Molecular, and Integrative Biology (W.H.), University of Liverpool, Liverpool, and the Medical Research Council Centre for Medical Mycology, University of Exeter, Exeter (T.S.H.) - all in the United Kingdom; the Botswana-Harvard AIDS Institute Partnership (J.N.J., D.S.L., M. Mosepele, T.L., K. Siamisang, N.Y.), the Departments of Internal Medicine (M. Mosepele) and Family Medicine and Public Health (K. Siamisang), University of Botswana, and the Department of Health Services Management, Ministry of Health and Wellness (K. Siamisang) - all in Gaborone, Botswana; the Infectious Diseases Institute, College of Health Sciences (D.B.M., E.K., J.K., E.M., M.K.R., K. Ssebambulidde, L.T., J.R., D.R.B., S. Jjunju, E.N.), and the Department of Medicine, School of Medicine (D.B.M.), Makerere University, Kampala, and Mbarara University of Science and Technology, Mbarara (C. Muzoora, E.N.) - both in Uganda; the University of Minnesota, Minneapolis (D.B.M., J.R., D.R.B.); the Malawi-Liverpool-Wellcome Trust Clinical Research Programme (H.C.M., M. Moyo, H.M., D.G.L.) and the Department of Medicine, Kamuzu University of Health Sciences (H.C.M., M. Moyo), Blantyre, and the Lilongwe Medical Relief Fund Trust (University of North Carolina-Malawi Project), Lilongwe (C.K., M.C.H., C.C.) - all in Malawi; the Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill (M.C.H.); the Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine (G.M., C.S., K.C., A.S.), and the Department of Medicine (G.M., C.S., K.C.), University of Cape Town, and the Department of Radiology, Groote Schuur Hospital (A.S.) - both in Cape Town, South Africa; the Internal Medicine Unit, Faculty of Medicine and Health Sciences, University of Zimbabwe, Harare (C.E.N., A.H., C. Mutata); Institut Pasteur, National Center for Scientific Research, Molecular Mycology Unit and National Reference Center for Invasive Mycoses and Antifungals, Unités Mixtes de Recherche 2000, and Université de Paris, Necker Pasteur Center for Infectious Diseases and Tropical Medicine, Hôpital Necker Enfants Malades, Assistance Publique-Hôpitaux de Paris, Institut Hospitalo-Universitaire Imagine - both in Paris (T.B.-C., O.L.).

Background: Cryptococcal meningitis is a leading cause of human immunodeficiency virus (HIV)-related death in sub-Saharan Africa. Whether a treatment regimen that includes a single high dose of liposomal amphotericin B would be efficacious is not known.

Methods: In this phase 3 randomized, controlled, noninferiority trial conducted in five African countries, we assigned HIV-positive adults with cryptococcal meningitis in a 1:1 ratio to receive either a single high dose of liposomal amphotericin B (10 mg per kilogram of body weight) on day 1 plus 14 days of flucytosine (100 mg per kilogram per day) and fluconazole (1200 mg per day) or the current World Health Organization-recommended treatment, which includes amphotericin B deoxycholate (1 mg per kilogram per day) plus flucytosine (100 mg per kilogram per day) for 7 days, followed by fluconazole (1200 mg per day) for 7 days (control).

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Background: The identification of patients with symptoms is the foundation of facility-based TB screening and diagnosis, but underdiagnosis is common. We conducted this systematic review with the hypothesis that underdiagnosis is largely secondary to patient drop out along the diagnostic and care pathway.

Methods: We searched (up to 22 January 2019) MEDLINE, Embase, and Cinahl for studies investigating patient pathway to TB diagnosis and care at health facilities.

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Article Synopsis
  • * This study aims to analyze the relationship between infant lung function and factors such as household food insecurity, energy poverty, and maternal dietary diversity by tracking pregnant women in South-West Uganda.
  • * Data will be collected on food insecurity and maternal health, and analyzed for its effects on infant lung function and growth, with ethical approvals secured for the research process.
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Background: In sub-Saharan Africa, the burdens of malaria and HIV infections overlap. In settings with moderate-to-high malaria transmission intensity, pregnant women living with HIV (PLWH) require both ART and malaria intermittent preventive treatment (IPTp). Dihydroartemisinin/piperaquine has been identified as a promising alternative to sulfadoxine/pyrimethamine for IPTp.

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A 34-Year-Old Man With a Neck Mass.

Chest

March 2022

Department of Medicine, University of Malawi College of Medicine, Blantyre, Malawi; Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi; Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, England. Electronic address:

A 34-year-old man presented to Queen Elizabeth Central Hospital in Blantyre, Malawi with multiple enlarged right cervical lymph nodes. He had no associated constitutional symptoms. Fine-needle aspirate (FNA) of one of the lymph nodes was negative for acid-fast bacilli (AFB) by smear microscopy.

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Article Synopsis
  • Irrigation schemes create favorable conditions for Anopheles mosquitoes, especially during dry seasons, making vector control efforts more challenging.
  • The study evaluated the effectiveness of three mosquito trapping methods—Host Decoy Trap (HDT), Human Landing Catch (HLC), and Suna Trap—across two villages in southern Malawi, focusing on the Anopheles arabiensis species.
  • The results showed that the HDT is a reliable method for capturing outdoor-seeking An. arabiensis, but the HLC was more sensitive overall; this indicates a need for improved strategies to control mosquito populations in irrigated areas.
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Human infection studies (HIS) involve deliberately infecting healthy volunteers with a pathogen in a controlled environment to understand infection and support the development of effective vaccines or treatments. HIS research is expanding to many low and middle-income settings to accelerate vaccine development. Given the implementation of the first HIS research to establish the experimental human pneumococcal carriage model's feasibility, we sought to understand the participant's opinions and experiences.

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Postmenopausal women and renal transplant recipients are at increased risk of recurrent urinary tract infections (RUTI). Urine and vaginal microbiota of premenopausal controls (N = 18) and RUTI cases (18), and of postmenopausal controls (30) and RUTI cases (20) with and without a renal transplant, were characterized using 16S rRNA sequencing. Participants did not have UTI symptoms at the time of sampling.

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Background: There is a substantial typhoid burden in sub-Saharan Africa, and TCV has been introduced in two African countries to date. Decision-makers in Malawi decided to introduce TCV and applied for financial support from Gavi, the Vaccine Alliance in 2020. The current plan is to introduce TCV as part of the national immunization program in late 2022.

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The impact of long-term azithromycin on antibiotic resistance in HIV-associated chronic lung disease.

ERJ Open Res

January 2022

Department of Molecular and Cell Biology & Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Cape Town, South Africa.

Selection for resistance to azithromycin (AZM) and other antibiotics such as tetracyclines and lincosamides remains a concern with long-term AZM use for treatment of chronic lung diseases (CLD). We investigated the impact of 48 weeks of AZM on the carriage and antibiotic resistance of common respiratory bacteria among children with HIV-associated CLD. Nasopharyngeal (NP) swabs and sputa were collected at baseline, 48 and 72 weeks from participants with HIV-associated CLD randomised to receive weekly AZM or placebo for 48 weeks and followed post-intervention until 72 weeks.

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Differential localization and limited cytotoxic potential of duodenal CD8+ T cells.

JCI Insight

February 2022

HIV Pathogenesis Programme, Doris Duke Medical Research Institute, University of KwaZulu-Natal, Durban, South Africa.

Article Synopsis
  • The duodenum is a key area where HIV can remain in the body even during effective antiretroviral therapy, despite the presence of memory CD8+ T cells.
  • Research showed that a specific type of CD8+ T cell, termed Trm (CD69+CD103hi), is the most common in the duodenum and is not effectively fighting the virus.
  • The findings highlight that while these Trm cells are more functional than those in blood, they have limited potential to kill HIV-infected cells, suggesting a reason for ongoing viral persistence in this region and informing future treatment strategies.
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Introduction: Malawi has a substantial burden of chronic respiratory diseases (CRDs) which cause significant morbidity and loss of economic productivity, affecting patients, families and health systems. Pulmonary rehabilitation (PR) is a highly recommended non-pharmacological intervention in the clinical management of people with CRDs. However, Malawi lacks published evidence on the implementation of PR for people with CRDs.

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Neonatal rotavirus vaccine (RV3-BB) immunogenicity and safety in a neonatal and infant administration schedule in Malawi: a randomised, double-blind, four-arm parallel group dose-ranging study.

Lancet Infect Dis

May 2022

Murdoch Children's Research Institute, Parkville, VIC, Australia; Department of Gastroenterology and Clinical Nutrition, Royal Children's Hospital, Parkville, VIC, Australia; Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia. Electronic address:

Background: Rotavirus vaccines reduce rotavirus-related deaths and hospitalisations but are less effective in high child mortality countries. The human RV3-BB neonatal G3P[6] rotavirus vaccine administered in a neonatal schedule was efficacious in reducing severe rotavirus gastroenteritis in Indonesia but had not yet been evaluated in African infants.

Methods: We did a phase 2, randomised, double-blind, parallel group dose-ranging study of three doses of oral RV3-BB rotavirus vaccine in infants in three primary health centres in Blantyre, Malawi.

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Background: Household air pollution from solid fuels increases the risk of childhood pneumonia. Nasopharyngeal carriage of Streptococcus pneumoniae is a necessary step in the development of pneumococcal pneumonia. We aimed to assess the association between exposure to household air pollution and the prevalence and density of S pneumoniae carriage among children.

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Pakistan's national tuberculosis control programme (NTP) is among the many programmes worldwide that value the importance of subnational tuberculosis (TB) burden estimates to support disease control efforts, but do not have reliable estimates. A hackathon was thus organised to solicit the development and comparison of several models for small area estimation of TB. The TB hackathon was launched in April 2019.

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Introduction: Low- and middle-income countries bear a disproportionately high burden of global morbidity and mortality caused by chronic respiratory diseases. Pulmonary rehabilitation is recommended as a core intervention in the management of people with chronic respiratory diseases. However, the intervention remains poorly accessed/utilised globally, especially in low- and middle-income countries.

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Global Representation During a Global Pandemic.

JAMA Pediatr

March 2022

Department of Pediatrics, Tropical Medicine and Pediatric Infectious Diseases, Baylor College of Medicine, Houston, Texas.

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Background: Malaria in individuals who have never had an infection before is usually characterized by an inflammatory response that is linked to the expression of specific activation markers on cells of the innate immune system.

Methods: This study investigated absolute white blood cell (WBC) and neutrophil counts and expression of several adhesion markers on neutrophils from HIV-uninfected children who were suffering from cerebral malaria (n=35), severe malarial anemia (SMA, n=39), and uncomplicated malaria (n=49) and healthy aparasitemic children (n=33) in Blantyre, Malawi.

Results: All clinical malaria groups had higher WBC and neutrophil counts compared to healthy controls, with the acute SMA group having significantly (<0.

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Background: Both HIV and schistosomiasis are major public health problems worldwide with 1.8 million new HIV infections, and up to 110 million untreated schistosomiasis cases globally. Although a causal link has not been established, there are strong suggestions that having schistosomiasis increases onward transmission of HIV from co-infected men to women.

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Background: Timely diagnosis of HIV in infants and children is an urgent priority. In Malawi, 40,000 infants annually are HIV exposed. However, gold standard polymerase-chain-reaction (PCR) based testing requires centralised laboratories, causing turn-around times (TAT) of 2 to 3 months and significant loss to follow-up.

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