77 Works

Community-based prevalence of Rheumatic Heart Disease in rural Ethiopia: five-year follow-up.

David Phillips, Tadesse Gemechu, Eldryd Parry, Magdi Yacoub & Susy Kotit
Follow up data from a prospective study of Rhematic Heart Disease prevalence in rural Ethiopia to support article in PLOS Neglected Tropical Diseases

Patterns of non-communicable comorbidities at start of tuberculosis treatment in three regions of the Philippines: St-ATT cohort baseline data

Sharon Cox & Benjamin Faguer
Data collected as part of a facility-based prospective cohort study conducted in public (government) Tuberculosis (TB) Directly Observed Treatment (DOT) clinics in the Philippine. This dataset contains individual-level information that used in a cross-sectional analysis of selected data collected from the St-ATT cohort of Filipino adults at baseline who were enrolled within 5 days of initiating a new tuberculosis treatment regimen. Study information is available in the ISRCTN Registry ID: 16347615.

Data from: Unravelling the immune signature of Plasmodium falciparum transmission-reducing immunity

Will J. R. Stone, Joseph J. Campo, André Lin Ouédraogo, Lisette Meerstein-Kessel, Isabelle Morlais, Dari Da, Anna Cohuet, Sandrine Nsango, Colin J. Sutherland, Marga Van De Vegte-Bolmer, Rianne Siebelink-Stoter, Geert-Jan Van Gemert, Wouter Graumans, Kjerstin Lanke, Adam D. Shandling, Jozelyn V. Pablo, Andy A. Teng, Sophie Jones, Roos M. De Jong, Amanda Fabra-García, John Bradley, Will Roeffen, Edwin Lasonder, Giuliana Gremo, Evelin Schwarzer … & Matthijs M. Jore
Infection with Plasmodium can elicit antibodies that inhibit parasite survival in the mosquito, when they are ingested in an infectious blood meal. Here, we determine the transmission-reducing activity (TRA) of naturally acquired antibodies from 648 malaria-exposed individuals using lab-based mosquito-feeding assays. Transmission inhibition is significantly associated with antibody responses to Pfs48/45, Pfs230, and to 43 novel gametocyte proteins assessed by protein microarray. In field-based mosquito-feeding assays the likelihood and rate of mosquito infection are significantly...

Data from: Empirical and theoretical investigation into the potential impacts of insecticide resistance on the effectiveness of insecticide-treated bed nets

Katey D. Glunt, Maureen Coetzee, Silvie Huijben, A. Alphonsine Koffi, Penelope A. Lynch, Raphael N'Guessan, Welbeck A. Oumbouke, Eleanore D. Sternberg & Matthew B. Thomas
In spite of widespread insecticide resistance in vector mosquitoes throughout Africa, there is limited evidence that long lasting insecticidal bed nets (LLINs) are failing to protect against malaria. Here, we showed that LLIN contact in the course of host-seeking resulted in higher mortality of resistant Anopheles spp. mosquitoes than predicted from standard laboratory exposures with the same net. We also found that sub-lethal contact with an LLIN caused a reduction in blood feeding and subsequent...

Data from: A systematic review and meta-analysis of seroprevalence surveys of ebolavirus infection

Hilary Bower & Judith Glynn
Asymptomatic ebolavirus infection could greatly influence transmission dynamics, but there is little consensus on how frequently it occurs or even if it exists. This paper summarises the available evidence on seroprevalence of Ebola, Sudan and Bundibugyo virus IgG in people without known ebolavirus disease. Through systematic review, we identified 51 studies with seroprevalence results in sera collected from 1961 to 2016. We tabulated findings by study population, contact, assay, antigen and positivity threshold used, and...

Data from: Ecological host fitting of Trypanosoma cruzi TcI in Bolivia: mosaic population structure, hybridization and a role for humans in Andean parasite dispersal

Louisa A. Messenger, Lineth Garcia, Mathieu Vanhove, Carlos Huaranca, Marinely Bustamante, Marycruz Torrico, Faustino Torrico, Michael A. Miles & Martin S. Llewellyn
An improved understanding of how a parasite species exploits its genetic repertoire to colonize novel hosts and environmental niches is crucial to establish the epidemiological risk associated with emergent pathogenic genotypes. Trypanosoma cruzi, a genetically heterogeneous, multi-host zoonosis, provides an ideal system to examine the sylvatic diversification of parasitic protozoa. In Bolivia, T. cruzi I, the oldest and most widespread genetic lineage, is pervasive across a range of ecological clines. High-resolution nuclear (26 loci) and...

Data from: Socioeconomic determinants of antibiotic consumption in the state of São Paulo, Brazil: the effect of restricting over-the-counter sales

Breno S. Kliemann, Anna S. Levin, M. Luísa Moura, Icaro Boszczowski & J. J. Lewis
Background: Improper antibiotic use is one of the main drivers of bacterial resistance to antibiotics, increasing infectious diseases morbidity and mortality and raising costs of healthcare. The level of antibiotic consumption has been shown to vary according to socioeconomic determinants (SED) such as income and access to education. In many Latin American countries, antibiotics could be easily purchased without a medical prescription in private pharmacies before enforcement of restrictions on over-the-counter (OTC) sales in recent...

Data from: Reasons for low uptake of referrals to ear and hearing services for children in Malawi

Tess Bright, Wakisa Mulwafu, Richard Thindwa, Maria Zuurmond & Sarah Polack
Background: Early detection and appropriate intervention for children with hearing impairment is important for maximizing functioning and quality of life. The lack of ear and hearing services in low income countries is a significant challenge, however, evidence suggests that even where such services are available, and children are referred to them, uptake is low. The aim of this study was to assess uptake of and barriers to referrals to ear and hearing services for children...

Data from: Assessment of markers of antimalarial drug resistance in Plasmodium falciparum isolates from pregnant women in Lagos, Nigeria

Chimere Obiora Agomo, Wellington Aghoghovwia Oyibo, Colin J. Sutherland, Rachel Hallet & Mary Oguike
Background: The use of antimalarial drugs for prevention and treatment is a major strategy in the prevention of malaria in pregnancy. Although sulphadoxine-pyrimethamine (SP) is currently recommended for intermittent preventive treatment of malaria during pregnancy in Nigeria, previously used drugs for prophylaxis such as chloroquine (CQ) and pyrimethamine are accessible as they are purchased over the counter. This study describes the markers of absence or presence of resistance to quinoline (Pfcrt and Pfmdr 1) and...

Data from: Evolution and epidemic spread of SARS-CoV-2 in Brazil

Darlan S. Candido, Ingra M. Claro, Jaqueline G. De Jesus, William M. Souza, Filipe R. R. Moreira, Simon Dellicour, Thomas A. Mellan, Louis Du Plessis, Rafael H. M. Pereira, Flavia C. S. Sales, Erika R. Manuli, Julien Thézé, Luiz Almeida, Mariane T. Menezes, Carolina M. Voloch, Marcilio J. Fumagalli, Thaís M. Coletti, Camila A. M. Da Silva, Mariana S. Ramundo, Mariene R. Amorim, Henrique H. Hoeltgebaum, Swapnil Mishra, Mandev S. Gill, Luiz M. Carvalho, Lewis F. Buss … & Nuno R. Faria
Brazil currently has one of the fastest growing SARS-CoV-2 epidemics in the world. Owing to limited available data, assessments of the impact of non-pharmaceutical interventions (NPIs) on virus spread remain challenging. Using a mobility-driven transmission model, we show that NPIs reduced the reproduction number from >3 to 1–1.6 in São Paulo and Rio de Janeiro. Sequencing of 427 new genomes and analysis of a geographically representative genomic dataset identified >100 international virus introductions in Brazil....

Influenza clinical risk groups 2017 version - Chronic cardiac conditions

Sara Thomas
Read v2 codes for diagnoses of chronic cardiac conditions as an indication for influenza vaccination, including congenital heart disease, hypertension with cardiac complications, chronic heart failure, history of myocardial infarction, and other cardiac conditions likely to require regular medication and/or follow-up. Definition designed to follow national guidance in indications for influenza vaccination https://www.gov.uk/government/publications/influenza-the-green-book-chapter-19

Data from: The REporting of studies Conducted using Observational Routinely-collected health Data (RECORD) statement: methods for arriving at consensus and developing reporting guidelines

Stuart G. Nicholls, Pauline Quach, Erik Von Elm, Astrid Guttmann, David Moher, Irene Petersen, Henrik T. Sørensen, Liam Smeeth, Sinéad M. Langan & Eric I. Benchimol
Objective: Routinely collected health data, collected for administrative and clinical purposes, without specific a priori research questions, are increasingly used for observational, comparative effectiveness, health services research, and clinical trials. The rapid evolution and availability of routinely collected data for research has brought to light specific issues not addressed by existing reporting guidelines. The aim of the present project was to determine the priorities of stakeholders in order to guide the development of the REporting...

Data from: Changing patterns of cataract services in North-West Nigeria: 2005–2016

Nasiru Muhammad, Muhammad D. Adamu, Mpyet Caleb, Nuhu Mohammed Maishanu, Aliyu M. Jabo, Muhammad M. Rabiu, Covadonga Bascaran, Sunday Isiyaku & Allen Foster
Purpose This study was conducted to assess the impact of the eye care programme on cataract blindness and cataract surgical services in Sokoto, Nigeria over a 12 year period 2005-2016. Methods Data from the 2005 population based cross-sectional study of blindness in Sokoto state was re-analysed to obtain baseline estimates of the prevalence of cataract blindness and cataract surgical coverage for persons 50 years and over in Wurno health zone. A population based survey of...

Data from: How do patients and health workers interact around malaria rapid diagnostic testing, and how are the tests experienced by patients in practice? A qualitative study in western Uganda

Robin Altaras, Anthony Nuwa, Bosco Agaba, Elizabeth Streat, James K. Tibenderana, Sandrine Martin & Clare E. Strachan
Background: Successful scale-up in the use of malaria rapid diagnostic tests (RDTs) requires that patients accept testing and treatment based on RDT results and that healthcare providers treat according to test results. Patient-provider communication is a key component of quality care, and leads to improved patient satisfaction, higher adherence to treatment and better health outcomes. Voiced or perceived patient expectations are also known to influence treatment decision-making among healthcare providers. While there has been a...

Data from: Monogamy promotes altruistic sterility in insect societies

Nicholas G. Davies & Andy Gardner
Monogamy is associated with sibling-directed altruism in multiple animal taxa, including insects, birds, and mammals. Inclusive-fitness theory readily explains this pattern by identifying high relatedness as a promoter of altruism. In keeping with this prediction, monogamy should promote the evolution of voluntary sterility in insect societies if sterile workers make for better helpers. However, a recent mathematical population-genetics analysis failed to identify a consistent effect of monogamy on voluntary worker sterility. Here, we revisit that...

Data from: Process evaluation of a national primary eye care programme in Rwanda

Jennifer L. Y. Yip, Tess Bright, Sebastian Ford, Wanjiku Mathenge & Hannah Faal
Background: Visual impairment is a global public health problem, with an estimated 285 million affected globally, of which 43% are due to refractive error. A lack of specialist eye care in low and middle-income countries indicates a new model of care would support a task-shifting model and address this urgent need. We describe the features and results of the process evaluation of a national primary eye care (PEC) programme in Rwanda. Methods: We used the...

Data from: Functional antibodies against Plasmodium falciparum sporozoites are associated with a longer time to qPCR-detected infection among schoolchildren in Burkina Faso

Aissata Barry, Marije C. Behet, Issa Nébié, Kjerstin Lanke, Lynn Grignard, Alphonse Ouedraogo, Issiaka Soulama, Chris Drakeley, Robert Sauerwein, Judith M. Bolscher, Koen J. Dechering, Teun Bousema, Alfred B. Tiono & Bronner P. Gonçalves
Background: Individuals living in malaria-endemic regions develop naturally acquired immunity against severe malarial disease, but it is unclear whether immunity that affects the establishment of infections develops following continuous natural exposure. Methods: We cleared schoolchildren in Burkina Faso of possible sub-patent infections and examined them weekly for incident infections by PCR. Plasma samples collected at enrolment were used to quantify antibodies to the pre-eryhrocytic-stage antigens circumsporozoite protein (CSP) and liver stage antigen. Sporozoite gliding inhibition...

Data from: Distinguishing between reservoir exposure and human-to-human transmission for emerging pathogens using case onset data

Adam Kucharski, Harriet L. Mills, Amy Pinsent, Christophe Fraser, Maria Van Kerkhove, Christl A. Donnelly, Steven Riley & Harriet Mills
Pathogens such as MERS-CoV, influenza A/H5N1 and influenza A/H7N9 are currently generating sporadic clusters of spillover human cases from animal reservoirs. The lack of a clear human epidemic suggests that the basic reproductive number R0 is below or very close to one for all three infections. However, robust cluster-based estimates for low R0 values are still desirable so as to help prioritise scarce resources between different emerging infections and to detect significant changes between clusters...

Data from: The impact of hotspot-targeted interventions on malaria transmission in Rachuonyo south district in the western Kenyan highlands: a cluster-randomized controlled trial

Teun Bousema, Gillian Stresman, Amrish Y. Baidjoe, John Bradley, Philip Knight, William Stone, Victor Osoti, Euniah Makori, Chrispin Owaga, Wycliffe Odongo, Pauline China, Shehu Shagari, Ogobara K. Doumbo, Robert W. Sauerwein, Simon Kariuki, Chris Drakeley, Jennifer Stevenson & Jonathan Cox
Background: Malaria transmission is highly heterogeneous, generating malaria hotspots that can fuel malaria transmission across a wider area. Targeting hotspots may represent an efficacious strategy for reducing malaria transmission. We determined the impact of interventions targeted to serologically defined malaria hotspots on malaria transmission both inside hotspots and in surrounding communities. Methods and Findings: Twenty-seven serologically defined malaria hotspots were detected in a survey conducted from 24 June to 31 July 2011 that included 17,503...

Anopheles stephensi mosquitoes as vectors of Plasmodium vivax and falciparum, Horn of Africa, 2019

Fitsum G. Tadesse, Temesgen Ashine, Hiwot Teka, Endashaw Esayas, Louisa A. Messenger, Wakweya Chali, Lisette Meerstein-Kessel, Thomas Walker, Sinknesh Wolde Behaksra, Kjerstin Lanke, Roel Heutink, Claire L. Jeffries, Daniel Abebe Mekonnen, Elifaged Hailemeskel, Surafel K. Tebeje, Temesgen Tafesse, Abrham Gashaw, Tizita Tsegaye, Tadele Emiru, Kigozi Simon, Eyuel Asemahegn Bogale, Gedeon Yohannes, Soriya Kedir, Girma Shumie, Senya Asfer Sabir … & Teun Bousema
An. stephensi, an efficient malaria vector in parts of Asia and Africa, was observed in 75.3% of water sources surveyed, and contributed to 80.9% of wild-caught Anopheles mosquitoes in Awash Sebat Kilo, Ethiopia. High susceptibility of these mosquitoes to Plasmodium falciparum and vivax infection presents a challenge for malaria control in the Horn of Africa. This study was conducted in Awash Sebat Kilo, Ethiopia, an area of perennial malaria transmission, from April to September 2019....

ARGUS study - clinical and bacteriological outcomes dataset

Ioana Olaru
Background: Treatment for urinary tract infections (UTIs) is usually empiric and is based on local antimicrobial resistance data. These data, however, are scarce in low-resource settings. The aim of this study is to determine the impact of antibiotic treatment on clinical and bacteriological outcomes in patients presenting with UTI symptoms to primary care in Harare. Methods: This cohort study enrolled participants presenting with UTI symptoms to 10 primary healthcare clinics in Harare between July 2019...

Plasmodium falciparum gametocyte density and infectivity in peripheral blood and skin tissue of naturally infected parasite carriers in Burkina Faso

Teun Bousema, Elamaran Meibalan, Aissata Barry, Matthew Gibbins, Shehu Awandu, Lisette Meerstein-Kessel, Fiona Achar, Selina Bopp, Christopher Moxon, Amidou Diarra, Siaka Debe, Nicolas Ouedraogo, Ines Barry-Some, Emilie Badoum, Traore Fagnima, Kjerstin Lanke, Bronner Goncalves, John Bradley, Dyann Wirth, Chris Drakeley, Wamdaogo Guelbeogo, Alfred Tiono, Matthias Marti, Matthew P Gibbins, Fiona Achcar … & Alfred B Tiono
Background Plasmodium falciparum transmission depends on mature gametocytes that can be ingested by mosquitoes taking a blood meal on human skin. Although gametocyte skin sequestration has long been hypothesized as important contributor to efficient malaria transmission, this has never been formally tested. Methods In naturally infected gametocyte carriers from Burkina Faso, we assessed infectivity to mosquitoes by direct skin feeding and membrane feeding. We directly quantified male and female gametocytes and asexual parasites in finger-prick...

The Plasmodium falciparum artemisinin susceptibility-associated AP-2 adaptin mu subunit is clathrin-independent and essential for schizont-maturation

Colin J. Sutherland
Proteomics datasets, presented as a set of tables, produced as part of Dr Ryan Henrici's PhD project (completed 2018).

Combined Protocol for Acute Malnutrition Study (ComPAS) dataset

Jeanette Bailey, Charles Opondo, Natasha Lelijveld, Bethany Marron, Pamela Onyoo, Eunice Musyoki, Susan Adongo, Andre Briend, Mark Manary & Marko Kerac

SONA project - Asthma management data

Emily Webb & Harriet Mpairwe
Dataset produced as part of a study to investigate asthma control and management among schoolchildren in urban Uganda. Each row represents one child with asthma. Variables include data on asthma symptoms and management approaches.

Registration Year

  • 2022
    12
  • 2021
    17
  • 2020
    7
  • 2019
    9
  • 2018
    8
  • 2017
    6
  • 2016
    5
  • 2015
    7
  • 2014
    3
  • 2013
    1

Resource Types

  • Dataset
    77

Affiliations

  • London School of Hygiene & Tropical Medicine
    77
  • Radboud University Nijmegen
    6
  • Medical Research Council
    6
  • Centre National de Recherche et de Formation sur le Paludisme
    5
  • Imperial College London
    4
  • University College London
    3
  • Radboud University Nijmegen Medical Centre
    3
  • Biomedical Research and Training Institute
    2
  • Erasmus University Medical Center
    2
  • University of Edinburgh
    2