Author
Susan C. Morpeth
Other affiliations: Durham University, Duke University
Bio: Susan C. Morpeth is an academic researcher from Middlemore Hospital. The author has contributed to research in topics: Randomized controlled trial & Hydroxychloroquine. The author has an hindex of 12, co-authored 26 publications receiving 1510 citations. Previous affiliations of Susan C. Morpeth include Durham University & Duke University.
Papers
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University of Ottawa1, World Health Organization2, University of Pittsburgh3, King Saud bin Abdulaziz University for Health Sciences4, University of Edinburgh5, University of Jena6, Utrecht University7, Oswaldo Cruz Foundation8, Monash University9, Public Health England10, University of Liverpool11, Liverpool School of Tropical Medicine12, University of Oxford13, The Chinese University of Hong Kong14, Imperial College London15, Sungkyunkwan University16, Trinity College, Dublin17, Queen's University Belfast18, Johns Hopkins University19, University of Bonn20, Radboud University Nijmegen21, Seoul National University22, University of Brescia23, Beijing University of Chinese Medicine24, Centers for Disease Control and Prevention25, Tianjin University of Traditional Chinese Medicine26
TL;DR: A minimum set of common outcome measures for studies of COVID-19, which includes a measure of viral burden, patient survival, and patient progression through the health-care system by use of the WHO Clinical Progression Scale are urged.
Abstract: Summary Clinical research is necessary for an effective response to an emerging infectious disease outbreak. However, research efforts are often hastily organised and done using various research tools, with the result that pooling data across studies is challenging. In response to the needs of the rapidly evolving COVID-19 outbreak, the Clinical Characterisation and Management Working Group of the WHO Research and Development Blueprint programme, the International Forum for Acute Care Trialists, and the International Severe Acute Respiratory and Emerging Infections Consortium have developed a minimum set of common outcome measures for studies of COVID-19. This set includes three elements: a measure of viral burden (quantitative PCR or cycle threshold), a measure of patient survival (mortality at hospital discharge or at 60 days), and a measure of patient progression through the health-care system by use of the WHO Clinical Progression Scale, which reflects patient trajectory and resource use over the course of clinical illness. We urge investigators to include these key data elements in ongoing and future studies to expedite the pooling of data during this immediate threat, and to hone a tool for future needs.
882 citations
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TL;DR: The clinical presentation of non-Typhi Salmonella bacteremia is nonspecific and, in the absence of blood culture, may be confused with other febrile illnesses, such as malaria.
Abstract: Invasive non-Typhi Salmonella is endemic to sub-Saharan Africa, where it is a leading cause of bloodstream infection. Some host risk factors have been established, but little is known about environmental reservoirs and predominant modes of transmission, so prevention strategies are underdeveloped. Although foodborne transmission from animals to humans predominates in high-income countries, it has been postulated that transmission between humans, both within and outside health care facilities, may be important in sub-Saharan Africa. Antimicrobial resistance to ampicillin, trimethoprim-sulfamethoxazole, and chloramphenicol is common among non-Typhi Salmonella strains; therefore, wider use of alternative agents may be warranted for empirical therapy. Development of vaccines targeting the leading invasive non-Typhi Salmonella serotypes Typhimurium and Enteritidis is warranted. The clinical presentation of non-Typhi Salmonella bacteremia is nonspecific and, in the absence of blood culture, may be confused with other febrile illnesses, such as malaria. Much work remains to be done to understand and control invasive non-Typhi Salmonella disease in sub-Saharan Africa.
230 citations
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Susan C. Morpeth1, David R. Murdoch2, Christopher H. Cabell1, Adolf W. Karchmer3 +237 more•Institutions (52)
TL;DR: The ICE-PCS database offers a unique opportunity to evaluate the epidemiology, characteristics, and outcome of endocarditis due to non-HACEK gram-negative bacilli in a large, contemporary, and international cohort of well-characterized patients withendocarditis.
Abstract: Endocarditis caused by non-HACEK organisms (species other than Haemophilus species, Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens, and Kingella species) has lon...
211 citations
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TL;DR: Efforts to provide free antiretroviral therapy and to promote social coping may enhance adherence and reduce rates of virologic failure and self-funded treatment was associated with incomplete adherence and virology failure.
Abstract: Access to antiretroviral therapy is rapidly expanding in sub-Saharan Africa. Identifying the predictors of incomplete adherence virologic failure and antiviral drug resistance is essential to achieving long-term success. A total of 150 subjects who had received antiretroviral therapy for at least 6 months completed a structured questionnaire and adherence assessment and plasma human immunodeficiency virus (HIV) RNA levels were measured. Virologic failure was defined as an HIV RNA level > 400 copies/mL; for patients with an HIV RNA level > 1000 copies/mL genotypic antiviral drug resistance testing was performed. Predictors were analyzed using bivariable and multivariable logistic regression models. A total of 23 (16%) of 150 subjects reported incomplete adherence. Sacrificing health care for other necessities (adjusted odds ratio [AOR] 19.8; P < .01) and the proportion of months receiving self-funded treatment (AOR 23.5; P = .04) were associated with incomplete adherence. Virologic failure was identified in 48 (32%) of 150 subjects and was associated with incomplete adherence (AOR 3.6; P = .03) and the proportion of months receiving self-funded antiretroviral therapy (AOR 13.0; P = .02). Disclosure of HIV infection status to family members or others was protective against virologic failure (AOR 0.10; P = .04). Self-funded treatment was associated with incomplete adherence and virologic failure and disclosure of HIV infection status was protective against virologic failure. Efforts to provide free antiretroviral therapy and to promote social coping may enhance adherence and reduce rates of virologic failure. (authors)
208 citations
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Stanford University1, Uppsala University2, University Hospital of Basel3, University of Basel4, University of Amsterdam5, Tanta University6, Assiut University7, University of Pennsylvania8, University of Health Sciences Lahore9, University of Pittsburgh10, King Saud bin Abdulaziz University for Health Sciences11, Brigham and Women's Hospital12, Duke University13, Cliniques Universitaires Saint-Luc14, Copenhagen University Hospital15, South Korean Ministry for Health, Welfare and Family Affairs16, Akershus University Hospital17, University of Oslo18, Oswaldo Cruz Foundation19, Utrecht University20, Imperial College Healthcare21, Auckland City Hospital22, Wellington Management Company23, Capital Medical University24, University of Granada25, University of Tübingen26, Bernhard Nocht Institute for Tropical Medicine27, University of Hamburg28, Monash University29, Middlemore Hospital30, University of British Columbia31, UnityPoint Health32, University of Hawaii at Manoa33, The Queen's Medical Center34, Menoufia University35, St John of God Subiaco Hospital36, Ottawa Hospital Research Institute37
TL;DR: In this article, a rapid meta-analysis of ongoing, completed, or discontinued RCTs on hydroxychloroquine or chloroquine treatment for any COVID-19 patients was presented.
Abstract: Substantial COVID-19 research investment has been allocated to randomized clinical trials (RCTs) on hydroxychloroquine/chloroquine, which currently face recruitment challenges or early discontinuation. We aim to estimate the effects of hydroxychloroquine and chloroquine on survival in COVID-19 from all currently available RCT evidence, published and unpublished. We present a rapid meta-analysis of ongoing, completed, or discontinued RCTs on hydroxychloroquine or chloroquine treatment for any COVID-19 patients (protocol: https://osf.io/QESV4/
). We systematically identified unpublished RCTs (ClinicalTrials.gov, WHO International Clinical Trials Registry Platform, Cochrane COVID-registry up to June 11, 2020), and published RCTs (PubMed, medRxiv and bioRxiv up to October 16, 2020). All-cause mortality has been extracted (publications/preprints) or requested from investigators and combined in random-effects meta-analyses, calculating odds ratios (ORs) with 95% confidence intervals (CIs), separately for hydroxychloroquine and chloroquine. Prespecified subgroup analyses include patient setting, diagnostic confirmation, control type, and publication status. Sixty-three trials were potentially eligible. We included 14 unpublished trials (1308 patients) and 14 publications/preprints (9011 patients). Results for hydroxychloroquine are dominated by RECOVERY and WHO SOLIDARITY, two highly pragmatic trials, which employed relatively high doses and included 4716 and 1853 patients, respectively (67% of the total sample size). The combined OR on all-cause mortality for hydroxychloroquine is 1.11 (95% CI: 1.02, 1.20; I² = 0%; 26 trials; 10,012 patients) and for chloroquine 1.77 (95%CI: 0.15, 21.13, I² = 0%; 4 trials; 307 patients). We identified no subgroup effects. We found that treatment with hydroxychloroquine is associated with increased mortality in COVID-19 patients, and there is no benefit of chloroquine. Findings have unclear generalizability to outpatients, children, pregnant women, and people with comorbidities. Hydroxychloroquine and chloroquine have been investigated as a potential treatment for Covid-19 in several clinical trials. Here the authors report a meta-analysis of published and unpublished trials, and show that treatment with hydroxychloroquine for patients with Covid-19 was associated with increased mortality, and there was no benefit from chloroquine.
165 citations
Cited by
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University of Oxford1, Federal University of São Paulo2, University of the Witwatersrand3, Stellenbosch University4, Liverpool School of Tropical Medicine5, University of Sheffield6, University of London7, Newcastle upon Tyne Hospitals NHS Foundation Trust8, University Hospital Southampton NHS Foundation Trust9, University Hospitals Bristol NHS Foundation Trust10, Guy's and St Thomas' NHS Foundation Trust11, University Hospitals Birmingham NHS Foundation Trust12, St George's, University of London13, AstraZeneca14, North Bristol NHS Trust15, University College Hospital16, University of Hull17, Escola Bahiana de Medicina e Saúde Pública18, Federal University of Rio Grande do Norte19, Northwest University (China)20, Universidade Federal de Santa Maria21, Glasgow Dental Hospital and School22, Boston Children's Hospital23, Universidade Federal do Rio Grande do Sul24, Western General Hospital25, University of Glasgow26, Cambridge University Hospitals NHS Foundation Trust27, University of Cambridge28, Nottingham University Hospitals NHS Trust29, Aneurin Bevan University Health Board30
TL;DR: ChAdOx1 nCoV-19 has an acceptable safety profile and has been found to be efficacious against symptomatic COVID-19 in this interim analysis of ongoing clinical trials.
3,741 citations
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TL;DR: This document summarizes current knowledge about three-dimensional AIDS, congenital heart disease, cardiac device-related infective endocarditis, and cardiac implantable electronic device in the context of acquired immune deficiency syndrome.
Abstract: 3D
: three-dimensional
AIDS
: acquired immune deficiency syndrome
b.i.d.
: bis in die (twice daily)
BCNIE
: blood culture-negative infective endocarditis
CDRIE
: cardiac device-related infective endocarditis
CHD
: congenital heart disease
CIED
: cardiac implantable electronic device
3,510 citations
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University of Oxford1, World Health Organization2, Centre for the AIDS Programme of Research in South Africa3, University of the Philippines4, Complutense University of Madrid5, Tehran University of Medical Sciences6, University of British Columbia7, Public Health Foundation of India8, National Academy of Sciences9, Claude Bernard University Lyon 110, University of Bristol11, University of Bern12, University of Oslo13, University College Cork14, Cayetano Heredia University15, Indian Council of Medical Research16, Vilnius University17, Memorial Hospital of South Bend18, University of Lausanne19, University of the Witwatersrand20, Oswaldo Cruz Foundation21, Public Health Agency of Canada22, University of Verona23
TL;DR: These remdesivir, hydroxychloroquine, lopinavir, and interferon regimens had little or no effect on hospitalized patients with Covid-19, as indicated by overall mortality, initiation of ventilation, and duration of hospital stay.
Abstract: Background World Health Organization expert groups recommended mortality trials of four repurposed antiviral drugs - remdesivir, hydroxychloroquine, lopinavir, and interferon beta-1a - in patients hospitalized with coronavirus disease 2019 (Covid-19). Methods We randomly assigned inpatients with Covid-19 equally between one of the trial drug regimens that was locally available and open control (up to five options, four active and the local standard of care). The intention-to-treat primary analyses examined in-hospital mortality in the four pairwise comparisons of each trial drug and its control (drug available but patient assigned to the same care without that drug). Rate ratios for death were calculated with stratification according to age and status regarding mechanical ventilation at trial entry. Results At 405 hospitals in 30 countries, 11,330 adults underwent randomization; 2750 were assigned to receive remdesivir, 954 to hydroxychloroquine, 1411 to lopinavir (without interferon), 2063 to interferon (including 651 to interferon plus lopinavir), and 4088 to no trial drug. Adherence was 94 to 96% midway through treatment, with 2 to 6% crossover. In total, 1253 deaths were reported (median day of death, day 8; interquartile range, 4 to 14). The Kaplan-Meier 28-day mortality was 11.8% (39.0% if the patient was already receiving ventilation at randomization and 9.5% otherwise). Death occurred in 301 of 2743 patients receiving remdesivir and in 303 of 2708 receiving its control (rate ratio, 0.95; 95% confidence interval [CI], 0.81 to 1.11; P = 0.50), in 104 of 947 patients receiving hydroxychloroquine and in 84 of 906 receiving its control (rate ratio, 1.19; 95% CI, 0.89 to 1.59; P = 0.23), in 148 of 1399 patients receiving lopinavir and in 146 of 1372 receiving its control (rate ratio, 1.00; 95% CI, 0.79 to 1.25; P = 0.97), and in 243 of 2050 patients receiving interferon and in 216 of 2050 receiving its control (rate ratio, 1.16; 95% CI, 0.96 to 1.39; P = 0.11). No drug definitely reduced mortality, overall or in any subgroup, or reduced initiation of ventilation or hospitalization duration. Conclusions These remdesivir, hydroxychloroquine, lopinavir, and interferon regimens had little or no effect on hospitalized patients with Covid-19, as indicated by overall mortality, initiation of ventilation, and duration of hospital stay. (Funded by the World Health Organization; ISRCTN Registry number, ISRCTN83971151; ClinicalTrials.gov number, NCT04315948.).
2,001 citations
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TL;DR: The recommendations provided in this document are intended to assist in the management of this uncommon but potentially deadly infection and must be used to support and not supplant decisions in individual patient management.
Abstract: Background— Infective endocarditis is a potentially lethal disease that has undergone major changes in both host and pathogen. The epidemiology of infective endocarditis has become more complex wit...
1,862 citations
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TL;DR: The ESC Guidelines and Expert Consensus Documents summarize and evaluate all currently available evidence on a particular issue with the aim of assisting physicians in selecting the best management strategy for an individual patient suffering from a given condition, taking into account the impact on outcome, as well as the risk/benefit ratio of particular diagnostic or therapeutic means as mentioned in this paper.
Abstract: Guidelines and Expert Consensus Documents summarize and evaluate all currently available evidence on a particular issue with the aim of assisting physicians in selecting the best management strategy for an individual patient suffering from a given condition, taking into account the impact on outcome, as well as the risk/benefit ratio of particular diagnostic or therapeutic means. Guidelines are no substitutes for textbooks. The legal implications of medical guidelines have been discussed previously.
A great number of Guidelines and Expert Consensus Documents have been issued in recent years by the European Society of Cardiology (ESC) as well as by other societies and organizations. Because of the impact on clinical practice, quality criteria for development of guidelines have been established in order to make all decisions transparent to the user. The recommendations for formulating and issuing ESC Guidelines and Expert Consensus Documents can be found on the ESC website (http://www.escardio.org/knowledge/guidelines/rules).
In brief, experts in the field are selected and undertake a comprehensive review of the published evidence for management and/or prevention of a given condition. A critical evaluation of diagnostic and therapeutic procedures is performed including assessment of the risk/ benefit ratio. Estimates of expected health outcomes for larger societies are included, where data exist. The level of evidence and the strength of recommendation of particular treatment options are weighed and graded according to predefined scales, as outlined in Tables 1 and 2 .
View this table:
Table 1
Classes of recommendations
View this table:
Table 2
Levels of evidence
The experts of the writing panels have provided disclosure statements of all relationships they may have which might be perceived as real or potential sources of conflicts of interest. These disclosure forms are kept on file at the European Heart House, headquarters of the ESC. Any changes in conflict of interest that arise during the writing period must be notified to …
1,658 citations