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1.
Int J Equity Health ; 22(1): 205, 2023 10 05.
Artículo en Inglés | MEDLINE | ID: mdl-37794428

RESUMEN

BACKGROUND: Sars-CoV-2, the causative agent of COVID-19, has led to more than 226,000 deaths in the UK and multiple risk factors for mortality including age, sex and deprivation have been identified. This study aimed to identify which individual indicators of the Scottish Index of Multiple Deprivation (SIMD), an area-based deprivation index, were predictive of mortality. METHODS: This was a prospective cohort study of anonymised electronic health records of 710 consecutive patients hospitalised with Covid-19 disease between March and June 2020 in the Lothian Region of Southeast Scotland. Data sources included automatically extracted data from national electronic platforms and manually extracted data from individual admission records. Exposure variables of interest were SIMD quintiles and 12 indicators of deprivation deemed clinically relevant selected from the SIMD. Our primary outcome was mortality. Age and sex adjusted univariable and multivariable analyses were used to determine measures of association between exposures of interest and the primary outcome. RESULTS: After adjusting for age and sex, we found an increased risk of mortality in the more deprived SIMD quintiles 1 and 3 (OR 1.75, CI 0.99-3.08, p = 0.053 and OR 2.17, CI 1.22-3.86, p = 0.009, respectively), but this association was not upheld in our multivariable model containing age, sex, Performance Status and clinical parameters of severity at admission. Of the 12 pre-selected indicators of deprivation, two were associated with greater mortality in our multivariable analysis: income deprivation rate categorised by quartile (Q4 (most deprived): 2.11 (1.20-3.77) p = 0.011)) and greater than expected hospitalisations due to alcohol per SIMD data zone (1.96 (1.28-3.00) p = 0.002)). CONCLUSIONS: SIMD as an aggregate measure of deprivation was not predictive of mortality in our cohort when other exposure measures were accounted for. However, we identified a two-fold increased risk of mortality in patients residing in areas with greater income-deprivation and/or number of hospitalisations due to alcohol. In areas where aggregate measures fail to capture pockets of deprivation, exploring the impact of specific SIMD indicators may be helpful in targeting resources to residents at risk of poorer outcomes from Covid-19.


Asunto(s)
COVID-19 , Humanos , Estudios de Cohortes , Factores Socioeconómicos , Estudios Prospectivos , SARS-CoV-2 , Escocia/epidemiología
2.
BMC Infect Dis ; 21(1): 318, 2021 Apr 06.
Artículo en Inglés | MEDLINE | ID: mdl-33823800

RESUMEN

BACKGROUND: Accurate diagnosis in patients with suspected coronavirus disease 2019 (COVID-19) is essential to guide treatment and limit spread of the virus. The combined nasal and throat swab is used widely, but its diagnostic performance is uncertain. METHODS: In a prospective, multi-centre, cohort study conducted in secondary and tertiary care hospitals in Scotland, we evaluated the combined nasal and throat swab with reverse transcriptase-polymerase chain reaction (RT-PCR) for severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) in consecutive patients admitted to hospital with suspected COVID-19. Diagnostic performance of the index and serial tests was evaluated for a primary outcome of confirmed or probable COVID-19, and a secondary outcome of confirmed COVID-19 on serial testing. The diagnosis was adjudicated by a panel, who recorded clinical, laboratory and radiological features blinded to the test results. RESULTS: We enrolled 1368 consecutive patients (median age 68 [interquartile range, IQR 53-80] years, 47% women) who underwent a total of 3822 tests (median 2 [IQR 1-3] tests per patient). The primary outcome occurred in 36% (496/1368), of whom 65% (323/496) and 35% (173/496) had confirmed and probable COVID-19, respectively. The index test was positive in 255/496 (51%) patients with the primary outcome, giving a sensitivity and specificity of 51.4% (95% confidence interval [CI] 48.8 to 54.1%) and 99.5% (95% CI 99.0 to 99.8%). Sensitivity increased in those undergoing 2, 3 or 4 tests to 60.1% (95% CI 56.7 to 63.4%), 68.3% (95% CI 64.0 to 72.3%) and 77.6% (95% CI 72.7 to 81.9%), respectively. The sensitivity of the index test was 78.9% (95% CI 74.4 to 83.2%) for the secondary outcome of confirmed COVID-19 on serial testing. CONCLUSIONS: In patients admitted to hospital, a single combined nasal and throat swab with RT-PCR for SARS-CoV-2 has excellent specificity, but limited diagnostic sensitivity for COVID-19. Diagnostic performance is significantly improved by repeated testing.


Asunto(s)
Prueba de Ácido Nucleico para COVID-19 , COVID-19/diagnóstico , Nariz/virología , Faringe/virología , Anciano , Anciano de 80 o más Años , Femenino , Hospitalización , Hospitales , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Escocia , Sensibilidad y Especificidad
3.
Lancet ; 385 Suppl 1: S80, 2015 Feb 26.
Artículo en Inglés | MEDLINE | ID: mdl-26312902

RESUMEN

BACKGROUND: In Bihar state, India, the cure rate of antimonial compounds (eg, sodium stibogluconate) in the treatment of visceral leishmaniasis (VL) has fallen from more than 85% to less than 50%. This reduction has been attributed to long-term, widespread misuse of antimonial drugs within the Indian private health-care system. We aimed to test the hypothesis that exposure to arsenic in drinking water in this region has resulted in antimony-resistant Leishmania parasites. METHODS: L donovani parasites were serially passaged in mice exposed to environmentally relevant concentrations of arsenic in drinking water. Arsenic concentrations in murine organs were quantified and the sensitivity of L donovani to sodium stibogluconate assessed at each passage. A retrospective field study on a cohort of antimony-treated patients with VL was performed in an arsenic-contaminated area of Bihar to assess risk of treatment failure and death in people exposed to arsenic. FINDINGS: Arsenic accumulation in organs of exposed mice was proportional to exposure level. After five passages, isolated parasites were refractory to sodium stibogluconate in in-vitro drug sensitivity assays. Treatment of arsenic exposed, infected mice with this drug confirmed that these parasites retained resistance in vivo. In the field work study, 110 patients with VL treated with sodium stibogluconate, failure rate was 59%. Patients using well water with high mean arsenic concentrations had a higher risk of treatment failure than patients using wells with arsenic levels of less than 10 µg/L (odds ratio 1·78, 95% CI 0·7-4·6, p=0·23). 21 patients died, 16 directly as a result of their disease. Mean arsenic concentrations of more than 10 µg/L increased the risk of all-cause and VL-related mortality (hazard ratio 3·27, 95% CI 1·4-8·1, and 2·65, 0·96-7·65, respectively). INTERPRETATION: These data suggest that arsenic contamination might have contributed to the development of antimonial resistance in Leishmania parasites in Bihar. Our epidemiological study was underpowered and retrospective in nature, so firm conclusions cannot be made. Further research into the associations between arsenic exposure and antimonial treatment failure and death in the leishmaniases is warranted. FUNDING: Wellcome Trust.

4.
Invest New Drugs ; 34(1): 104-11, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26686201

RESUMEN

BACKGROUND: There is crosstalk between the ANG-Tie2 and the PI3K/Akt/mTOR pathways. Combined ANG1/2 and mTOR blockade may have additive anti-cancer activity. The combination of trebananib, an inhibitor of ANG1/2-Tie2 interaction, with temsirolimus was evaluated in patients with advanced solid tumors to determine tolerability, maximum tolerated dose (MTD), and preliminary antitumor activity. METHODS: Patients were enrolled using 3 + 3 design, and were given intravenous trebananib and temsirolimus on Day 1, 8, 15 and 22 of a 28-day cycle. Dose limiting toxicities (DLTs) were evaluated during cycle 1. Peripheral blood was collected for evaluation of Tie2-expressing monocytes (TEMs) and thymidine phosphorylase (TP). Sparse pharmacokinetic (PK) sampling for trebananib drug levels was performed on Day 1 and 8 of cycle 2. RESULTS: Twenty-one patients were enrolled, 6 at dose level (DL) 1, 7 at DL -1, and 8 at DL -2. No effect of temsirolimus on trebananib PK was observed. The most common treatment-related adverse events (AEs) were: fatigue (81 %), edema (62 %), anorexia (57 %), nausea (52 %), rash (43 %) and mucositis (43 %). The most common grade ≥ 3 AEs included lymphopenia (28 %) and fatigue (28 %). The MTD was exceeded at DL-2. Of 18 response evaluable patients, 1 partial response was observed (ER+/HER2-/PIK3CA mutant breast cancer) and 4 patients had prolonged SD ≥ 24 weeks. No correlation with clinical benefit was observed with change in number TEMs or TP expression in TEMs with treatment. CONCLUSIONS: The MTD was exceeded at trebananib 10 mg/kg weekly and temsirolimus 20 mg weekly, with frequent overlapping toxicities including fatigue, edema, and anorexia.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Neoplasias/tratamiento farmacológico , Adulto , Anciano , Anorexia/inducido químicamente , Anorexia/epidemiología , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Edema/inducido químicamente , Edema/epidemiología , Fatiga/inducido químicamente , Fatiga/epidemiología , Femenino , Humanos , Masculino , Dosis Máxima Tolerada , Persona de Mediana Edad , Neoplasias/patología , Proteínas Recombinantes de Fusión/administración & dosificación , Sirolimus/administración & dosificación , Sirolimus/análogos & derivados , Resultado del Tratamiento
5.
Proc Natl Acad Sci U S A ; 110(49): 19932-7, 2013 Dec 03.
Artículo en Inglés | MEDLINE | ID: mdl-24167266

RESUMEN

The Indian subcontinent is the only region where arsenic contamination of drinking water coexists with widespread resistance to antimonial drugs that are used to treat the parasitic disease visceral leishmaniasis. We have previously proposed that selection for parasite resistance within visceral leishmaniasis patients who have been exposed to trivalent arsenic results in cross-resistance to the related metalloid antimony, present in the pentavalent state as a complex in drugs such as sodium stibogluconate (Pentostam) and meglumine antimonate (Glucantime). To test this hypothesis, Leishmania donovani was serially passaged in mice exposed to arsenic in drinking water at environmentally relevant levels (10 or 100 ppm). Arsenic accumulation in organs and other tissues was proportional to the level of exposure and similar to that previously reported in human liver biopsies. After five monthly passages in mice exposed to arsenic, isolated parasites were found to be completely refractory to 500 µg · mL(-1) Pentostam compared with the control passage group (38.5 µg · mL(-1)) cultured in vitro in mouse peritoneal macrophages. Reassessment of resistant parasites following further passage for 4 mo in mice without arsenic exposure showed that resistance was stable. Treatment of infected mice with Pentostam confirmed that resistance observed in vitro also occurred in vivo. We conclude that arsenic contamination may have played a significant role in the development of Leishmania antimonial resistance in Bihar because inadequate treatment with antimonial drugs is not exclusive to India, whereas widespread antimonial resistance is.


Asunto(s)
Antiprotozoarios/metabolismo , Arsénico/toxicidad , Agua Potable/análisis , Resistencia a Medicamentos/efectos de los fármacos , Exposición a Riesgos Ambientales/efectos adversos , Leishmania/efectos de los fármacos , Leishmaniasis Visceral/tratamiento farmacológico , Contaminantes Químicos del Agua/toxicidad , Animales , Gluconato de Sodio Antimonio , Línea Celular , India , Macrófagos/efectos de los fármacos , Tamizaje Masivo , Espectrometría de Masas , Ratones , Ratones Endogámicos BALB C
6.
Antimicrob Agents Chemother ; 57(10): 4699-706, 2013 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23856774

RESUMEN

The novel nitroimidazopyran agent (S)-PA-824 has potent antibacterial activity against Mycobacterium tuberculosis in vitro and in vivo and is currently in phase II clinical trials for tuberculosis (TB). In contrast to M. tuberculosis, where (R)-PA-824 is inactive, we report here that both enantiomers of PA-824 show potent parasiticidal activity against Leishmania donovani, the causative agent of visceral leishmaniasis (VL). In leishmania-infected macrophages, (R)-PA-824 is 6-fold more active than (S)-PA-824. Both des-nitro analogues are inactive, underlining the importance of the nitro group in the mechanism of action. Although the in vitro and in vivo pharmacological profiles of the two enantiomers are similar, (R)-PA-824 is more efficacious in the murine model of VL, with >99% suppression of parasite burden when administered orally at 100 mg kg of body weight(-1), twice daily for 5 days. In M. tuberculosis, (S)-PA-824 is a prodrug that is activated by a deazaflavin-dependent nitroreductase (Ddn), an enzyme which is absent in Leishmania spp. Unlike the case with nifurtimox and fexinidazole, transgenic parasites overexpressing the leishmania nitroreductase are not hypersensitive to either (R)-PA-824 or (S)-PA-824, indicating that this enzyme is not the primary target of these compounds. Drug combination studies in vitro indicate that fexinidazole and (R)-PA-824 are additive whereas (S)-PA-824 and (R)-PA-824 show mild antagonistic behavior. Thus, (R)-PA-824 is a promising candidate for late lead optimization for VL and may have potential for future use in combination therapy with fexinidazole, currently in phase II clinical trials against VL.


Asunto(s)
Antiprotozoarios/farmacología , Antiprotozoarios/uso terapéutico , Antituberculosos/farmacología , Antituberculosos/uso terapéutico , Leishmaniasis Visceral/tratamiento farmacológico , Animales , Antiprotozoarios/química , Antituberculosos/química , Femenino , Ratones , Ratones Endogámicos BALB C , Nitroimidazoles/química , Nitroimidazoles/farmacología , Nitroimidazoles/uso terapéutico , Estereoisomerismo
7.
Sci Total Environ ; 902: 165978, 2023 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-37544442

RESUMEN

The wastewater microbiome contains a multitude of resistant bacteria of human origin, presenting an opportunity for surveillance of resistance in the general population. However, wastewater microbial communities are also influenced by clinical sources, such as hospitals. Identifying signatures of the community and hospital resistome in wastewater is needed for interpretation and risk analysis. In this study, we compare the resistome and microbiome of hospital, community, and mixed municipal wastewater to investigate how and why the composition of these different sites differ. We conducted shotgun metagenomic analysis on wastewater samples from eight wastewater treatment plants (WWTPs), four hospitals, and four community sites in Scotland, using a paired sampling design. Cluster analysis and source attribution random forest models demonstrated that the hospital resistome was distinct from community and WWTP resistomes. Hospital wastewater had a higher abundance and diversity of resistance genes, in keeping with evidence that hospitals act as a reservoir and enricher of resistance. However, this distinctive 'hospital' signature appeared to be weak in the resistome of downstream WWTPs, likely due to dilution. We conclude that hospital and community wastewater resistomes differ, with the hospital wastewater representing a reservoir of patient- and hospital environment-associated bacteria. However, this 'hospital' signature is transient and does not overwhelm the community signature in the resistome of the downstream WWTP influent.


Asunto(s)
Aguas del Alcantarillado , Aguas Residuales , Humanos , Aguas del Alcantarillado/microbiología , Bacterias/genética , Genes Bacterianos , Hospitales , Antibacterianos , Metagenómica
8.
Postgrad Med J ; 88(1036): 59-65, 2012 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-22173691

RESUMEN

INTRODUCTION: 26% of people living with HIV in the UK remain undiagnosed and over 50% of adults with HIV are significantly immunocompromised at the time of diagnosis. Current guidelines recommend routine testing in all patients presenting with a range of conditions in low prevalence areas (< 2/1000). METHODS: The authors conducted an online survey of the knowledge, attitudes and practice of non-HIV specialist physicians with regard to HIV testing in two areas of the UK with a lower prevalence of HIV. Key outcomes included recognition of recommended clinical indications for HIV testing and perceived barriers to performing HIV tests more routinely. All responses were collected in July 2009. RESULTS: Recommended indications for HIV testing were identified by 0-43.7% of 119 respondents. 47.9% cited a low prevalence of HIV as a barrier to routine testing. 88% of 60 consultant physicians were unaware of current guidelines on testing for HIV. CONCLUSION: The authors found a low awareness of current guidance on testing for HIV and a high level of perceived barriers to testing. Reducing the high number of late diagnoses is a clinical and public health priority. To achieve this, the authors recommend improved policy dispersal coupled with education that targets perceived barriers to testing.


Asunto(s)
Pruebas Diagnósticas de Rutina/estadística & datos numéricos , Infecciones por VIH/diagnóstico , Conocimientos, Actitudes y Práctica en Salud , Médicos/psicología , Serodiagnóstico del SIDA , Recolección de Datos , Diagnóstico Tardío , Infecciones por VIH/epidemiología , Indicadores de Salud , Humanos , Sistemas en Línea
9.
Infect Prev Pract ; 4(4): 100248, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36573092

RESUMEN

Introduction: NHS Lothian policy has recently changed to avoid first-line use of trimethoprim for uncomplicated urinary tract infections (UTI) in patients with risk factors for trimethoprim resistance, in line with national guidance. This study aimed to identify risk factors for antimicrobial resistance in Escherichia coli bacteraemia related to UTI. Methods: A retrospective cohort study of 687 patients with E. coli bacteraemia related to UTI in NHS Lothian from 01/02/18 to 29/02/20 was undertaken. Demographics and comorbidities were collected from electronic patient records. Community prescribing and microbiology data were collected from the prescribing information system and Apex. Univariate and multivariate analysis was undertaken using RStudio to analyse trimethoprim, gentamicin and multi-drug resistance (MDR). Results: Trimethoprim resistance was present in 282/687(41%) of blood culture isolates. MDR was present in 278/687(40.5%) isolates. Previous urinary trimethoprim resistant E. coli was a significant risk factor for both trimethoprim resistance (OR 9.44, 95%CI 5.83-15.9) and MDR (OR 4.81, 95%CI 3.17-7.43) on multivariate modelling. Trimethoprim prescription (OR 2.10, 95% CI 1.33-3.34) and the number of community antibiotic courses (OR 1.19, 95%CI 1.06-1.35) were additional risk factors for trimethoprim resistance. Multiple independent risk factors were also identified for trimethoprim resistance, MDR and gentamicin resistance. Discussion: This study showed a high prevalence of trimethoprim resistance and MDR in patients with E. coli bacteraemia related to UTI. This supports the withdrawal of trimethoprim from first-line treatment of UTIs in patients with risk factors for trimethoprim resistance. It has also identified risk factors for MDR in E. coli bacteraemia.

10.
J R Coll Physicians Edinb ; 52(3): 204-212, 2022 09.
Artículo en Inglés | MEDLINE | ID: mdl-36369813

RESUMEN

BACKGROUND: COVID-19 mortality risk factors have been established in large cohort studies; long-term mortality outcomes are less documented. METHODS: We performed multivariable logistic regression to identify factors associated with in-patient mortality and intensive care unit (ICU) admission in symptomatic COVID-19 patients admitted to hospitals in South-East Scotland from 1st March to 30th June 2020. One-year mortality was reviewed. RESULTS: Of 726 patients (median age 72; interquartile range: 58-83 years, 55% male), 104 (14%) required ICU admission and 199 (27%) died in hospital. A further 64 died between discharge and 30th June 2021 (36% overall 1-year mortality). Stepwise logistic regression identified age >79 (odds ratio (OR), 4.77 (95% confidence interval (CI), 1.96-12.75)), male sex (OR, 1.83 (95% CI, 1.21-2.80)) and higher European Cooperative Oncology Group/World Health Organization performance status as associated with higher mortality risk. DISCUSSION: Poor functional baseline was the predominant independent risk factor for mortality in COVID-19. More than one-third of individuals had died by 1 year following admission.


Asunto(s)
COVID-19 , Humanos , Masculino , Anciano , Femenino , SARS-CoV-2 , Unidades de Cuidados Intensivos , Hospitalización , Factores de Riesgo , Mortalidad Hospitalaria , Estudios Retrospectivos
11.
J R Coll Physicians Edinb ; 51(3): 230-236, 2021 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-34528609

RESUMEN

BACKGROUND: Increasing the uptake of HIV testing in people who may have undiagnosed HIV is essential to reduce the morbidity associated with late HIV diagnosis. METHODS: We conducted a multicentre, longitudinal, mixed-methods study, surveying the attitudes, knowledge and practice of non-HIV specialist hospital physicians in South-East Scotland and North-East England with respect to HIV testing. RESULTS: We found that although awareness of indications for HIV testing had improved over time, only 13% of clinicians recognised all of the surveyed HIV indicator conditions. Physicians were better at recognising the indicator conditions relevant to their specialty. The perception of working with a low-risk patient population was the most frequently cited barrier to offering an HIV test. Only a third of study respondents had requested more than 10 HIV tests in the preceding year. CONCLUSIONS: Our study supports a need for targeted and sustained educational initiatives to increase rates of HIV testing in secondary care.


Asunto(s)
Prueba de VIH , Médicos , Electrónica , Inglaterra , Hospitales , Humanos , Escocia , Atención Secundaria de Salud
12.
Infect Control Hosp Epidemiol ; 42(8): 968-977, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-33349283

RESUMEN

OBJECTIVE: To determine risk factors for carbapenemase-producing organisms (CPOs) and to determine the prognostic impact of CPOs. DESIGN: A retrospective matched case-control study. PATIENTS: Inpatients across Scotland in 2010-2016 were included. Patients with a CPO were matched with 2 control groups by hospital, admission date, specimen type, and bacteria. One group comprised patients either infected or colonized with a non-CPO and the other group were general inpatients. METHODS: Conditional logistic regression models were used to identify risk factors for CPO infection and colonization, respectively. Mortality rates and length of postisolation hospitalization were compared between CPO and non-CPO patients. RESULTS: In total, 70 CPO infection cases (with 210 general inpatient controls and 121 non-CPO controls) and 34 CPO colonization cases (with 102 general inpatient controls and 60 non-CPO controls) were identified. Risk factors for CPO infection versus general inpatients were prior hospital stay (adjusted odds ratio [aOR], 4.05; 95% confidence interval [CI], 1.52-10.78; P = .005), longer hospitalization (aOR, 1.07; 95% CI, 1.04-1.10; P < .001), longer intensive care unit (ICU) stay (aOR, 1.41; 95% CI, 1.01-1.98; P = .045), and immunodeficiency (aOR, 3.68; 95% CI, 1.16-11.66; P = .027). Risk factors for CPO colonization were prior high-dependency unit (HDU) stay (aOR, 11.46; 95% CI, 1.27-103.09; P = .030) and endocrine, nutritional, and metabolic (ENM) diseases (aOR, 3.41; 95% CI, 1.02-11.33; P = .046). Risk factors for CPO infection versus non-CPO infection were prolonged hospitalization (aOR, 1.02; 95% CI, 1.00-1.03; P = .038) and HDU stay (aOR, 1.13; 95% CI, 1.02-1.26; P = .024). No differences in mortality rates were detected between CPO and non-CPO patients. CPO infection was associated with longer hospital stay than non-CPO infection (P = .041). CONCLUSIONS: A history of (prolonged) hospitalization, prolonged ICU or HDU stay; ENM diseases; and being immunocompromised increased risk for CPO. CPO infection was not associated with increased mortality but was associated with prolonged hospital stay.


Asunto(s)
Pacientes Internos , Proteínas Bacterianas , Estudios de Casos y Controles , Humanos , Estudios Retrospectivos , Factores de Riesgo , beta-Lactamasas
13.
Ann N Y Acad Sci ; 1483(1): 67-79, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-31868250

RESUMEN

Scant empirical attention has been devoted to understanding endings in youth mentoring relationships, despite the frequency with which they occur. This study examined data from a mixed-methods study of mentoring relationship endings in which youth mentees, the youth's parents or guardians, mentors, and program staff were surveyed about the closure process, and a subsample of program staff, mentors, and parents or guardians also participated in in-depth qualitative interviews. Findings from a descriptive analysis detailing the perceptions of multiple stakeholders in the closure process as reported in surveys are presented along with case studies derived from a case-based analysis of in-depth qualitative interview data. Most relationship endings were initiated by the mentors, and although some matches engaged in an intentional and direct closure process, more often the endings were unclear or even confusing to program participants. Implications for practice are discussed, including recommendations for more training and greater involvement of program staff in the closure process, as are implications for future research.


Asunto(s)
Relaciones Interpersonales , Tutoría , Mentores , Adolescente , Adulto , Femenino , Humanos , Masculino , Evaluación de Programas y Proyectos de Salud
14.
Front Microbiol ; 12: 703560, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34566912

RESUMEN

Background: Hospital wastewater is a major source of antimicrobial resistance (AMR) outflow into the environment. This study uses metagenomics to study how hospital clinical activity impacts antimicrobial resistance genes (ARGs) abundances in hospital wastewater. Methods: Sewage was collected over a 24-h period from multiple wastewater collection points (CPs) representing different specialties within a tertiary hospital site and simultaneously from community sewage works. High throughput shotgun sequencing was performed using Illumina HiSeq4000. ARG abundances were correlated to hospital antimicrobial usage (AMU), data on clinical activity and resistance prevalence in clinical isolates. Results: Microbiota and ARG composition varied between CPs and overall ARG abundance was higher in hospital wastewater than in community influent. ARG and microbiota compositions were correlated (Procrustes analysis, p=0.014). Total antimicrobial usage was not associated with higher ARG abundance in wastewater. However, there was a small positive association between resistance genes and antimicrobial usage matched to ARG phenotype (IRR 1.11, CI 1.06-1.16, p<0.001). Furthermore, analyzing carbapenem and vancomycin resistance separately indicated that counts of ARGs to these antimicrobials were positively associated with their increased usage [carbapenem rate ratio (RR) 1.91, 95% CI 1.01-3.72, p=0.07, and vancomycin RR 10.25, CI 2.32-49.10, p<0.01]. Overall, ARG abundance within hospital wastewater did not reflect resistance patterns in clinical isolates from concurrent hospital inpatients. However, for clinical isolates of the family Enterococcaceae and Staphylococcaceae, there was a positive relationship with wastewater ARG abundance [odds ratio (OR) 1.62, CI 1.33-2.00, p<0.001, and OR 1.65, CI 1.21-2.30, p=0.006 respectively]. Conclusion: We found that the relationship between hospital wastewater ARGs and antimicrobial usage or clinical isolate resistance varies by specific antimicrobial and bacterial family studied. One explanation, we consider is that relationships observed from multiple departments within a single hospital site will be detectable only for ARGs against parenteral antimicrobials uniquely used in the hospital setting. Our work highlights that using metagenomics to identify the full range of ARGs in hospital wastewater is a useful surveillance tool to monitor hospital ARG carriage and outflow and guide environmental policy on AMR.

15.
Philos Trans R Soc Lond B Biol Sci ; 376(1829): 20200275, 2021 07 19.
Artículo en Inglés | MEDLINE | ID: mdl-34053266

RESUMEN

This study demonstrates that an adoption of a segmenting and shielding strategy could increase the scope to partially exit COVID-19 lockdown while limiting the risk of an overwhelming second wave of infection. We illustrate this using a mathematical model that segments the vulnerable population and their closest contacts, the 'shielders'. Effects of extending the duration of lockdown and faster or slower transition to post-lockdown conditions and, most importantly, the trade-off between increased protection of the vulnerable segment and fewer restrictions on the general population are explored. Our study shows that the most important determinants of outcome are: (i) post-lockdown transmission rates within the general and between the general and vulnerable segments; (ii) fractions of the population in the vulnerable and shielder segments; (iii) adherence to protective measures; and (iv) build-up of population immunity. Additionally, we found that effective measures in the shielder segment, e.g. intensive routine screening, allow further relaxations in the general population. We find that the outcome of any future policy is strongly influenced by the contact matrix between segments and the relationships between physical distancing measures and transmission rates. This strategy has potential applications for any infectious disease for which there are defined proportions of the population who cannot be treated or who are at risk of severe outcomes. This article is part of the theme issue 'Modelling that shaped the early COVID-19 pandemic response in the UK'.


Asunto(s)
COVID-19/epidemiología , Pandemias , COVID-19/transmisión , COVID-19/virología , Control de Enfermedades Transmisibles/tendencias , Humanos , Modelos Teóricos , SARS-CoV-2/patogenicidad , Reino Unido/epidemiología
16.
Int J Urol Nurs ; 14(2): 83-91, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32793298

RESUMEN

INTRODUCTION: Urinary catheters are used extensively throughout healthcare for various reasons including management of urinary tract dysfunction. The purpose of this study was to simultaneously explore both catheter user experience and staff perception of catheter services within community urinary catheter care. METHODS: A questionnaire was conducted to investigate the views of community nursing staff. During the same time period, patients were interviewed about i) catheter-care standards and adherence to guidelines ii) patients' feelings towards their catheter and iii) potential improvements to catheter practices and design. RESULTS: Sixty-nine staff were surveyed. Although 97% of staff indicated they used local guidelines, in up to 62% of cases findings suggested practices in sending urine samples for culture did not comply with guidelines. Seventy-five percent of staff were satisfied with catheter care, but weaknesses were identified in handover processes, communication between staff and patients, and excessive documentation. Staff results were compared with the findings from interviews of 29 long-term urinary catheter users, demonstrating a higher level of satisfaction with catheter care amongst patients (86%). Patients and staff agreed that generally the impacts of their catheter on personal hygiene, sense of independence, sense of dignity and of patient happiness, were neutral (neither positive nor negative). However, regarding improvements to catheter practices and catheter design; 73% of staff but only 45% of patients suggested improvements in service, while 76% of patients but only 49% of staff suggested improvement in design. CONCLUSION: The study reveals general satisfaction with community catheter care, but indicates areas of potential improvements regarding communication, documentation and catheter design. When compared to patient responses, staff overall had a less positive view of patients perception of their relationship with their catheter.

17.
PLoS One ; 15(10): e0240471, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33119647

RESUMEN

BACKGROUND: A primary school musical ("The Mould that Changed the World") was developed as a unique public engagement strategy to combat antimicrobial resistance (AMR) by engaging children in the story of the discovery of antibiotics, the risks of drug-resistant infections and the importance of prudent antibiotic use. METHODS: The musical intervention was implemented in two UK primary schools by music specialists through a series of workshops, associated learning resources and performances to relatives. Participating children (n = 182), aged 9 to 11 years, were given an online questionnaire in the classroom before rehearsals began and at two weeks post-performance with a six-month evaluation in one school. The impact of the musical was analysed using generalised linear models to control for confounding factors. For the qualitative evaluation, fifteen participating children were selected randomly from each school to take part in semi-structured focus groups (n = 5 per group) before rehearsals began and two weeks post-performance. FINDINGS: Knowledge gain was demonstrated with children being more likely to answer questions on key messages of the musical correctly at two weeks post- performance (response rate 88%, n = 161) compared with the pre-rehearsal questionnaire (response rate 99%, n = 180) (bacteria can become resistant to antibiotics OR 4.63, C.I. 2.46-9.31 p<0.0001, antibiotic resistant infections can be life threatening OR 3.26 C.I. 1.75-6.32 p = 0.0001, prudent use of antibiotics will slow the rise of antibiotic resistant infections OR 2.16, C.I. 1.39-3.38, p = 0.0006). Long term knowledge gain was demonstrated by a consistent level of correct answers on key messages between two weeks (response rate 95%, n = 89) and 6 months post musical (response rate 71%, n = 67). Following the musical children participating in the focus groups (n = 30) articulated a greater understanding of AMR and the risks of antibiotic overuse. They discussed motivation to minimise personal antibiotic use and influence attitudes to antibiotics in their family and friends. INTERPRETATION: This study demonstrates that musical theatre can improve both short and long-term knowledge. It demonstrates a hitherto infrequently reported change in attitude and motivation to change behaviour in children at an influential age for health beliefs. This unique public health tool has the potential for high impact particularly if rolled out within national education programmes for primary school aged children.


Asunto(s)
Conducta Infantil/psicología , Farmacorresistencia Bacteriana , Educación en Salud/métodos , Musicoterapia/métodos , Niño , Estudios de Evaluación como Asunto , Femenino , Grupos Focales , Conocimientos, Actitudes y Práctica en Salud , Humanos , Masculino , Instituciones Académicas , Encuestas y Cuestionarios , Reino Unido
18.
Ecohealth ; 17(1): 28-40, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-31845120

RESUMEN

Many infectious diseases have a zoonotic origin, and several have had major public health implications. Contact with animals is a known risk factor for zoonotic infections, although there are limited data on disease symptoms and pathogens associated with contact with different animal species. The rise in pig production in Southeast Asia has contributed to the emergence and re-emergence of zoonotic infections caused by contact with pigs and pig products. To compare the symptom and pathogen profiles of hospitalized patients with and without pig contact, we collected data on disease symptoms, infecting pathogens, and animal contact behaviour from patients attending six hospitals across Vietnam between 2012 and 2016. Patients who had previous contact with pigs were more likely to have enteric disease than respiratory or central nervous system infections and were more likely to grow Escherichia coli and Shigella from stool culture than those without pig contact. Patients with enteric infections who kept pigs were also more likely to have a disease of unknown origin. Public health initiatives that account for differences in animal contact behaviours and offer more comprehensive diagnostics in high-risk individuals are needed if emergence and re-emergence of zoonotic disease is to be monitored and prevented.


Asunto(s)
Enfermedades de los Porcinos/epidemiología , Zoonosis/epidemiología , Animales , Enfermedades Transmisibles , Escherichia coli , Humanos , Evaluación de Resultado en la Atención de Salud , Salud Pública , Shigella , Porcinos , Vietnam/epidemiología
19.
N Engl J Med ; 355(10): 1018-28, 2006 Sep 07.
Artículo en Inglés | MEDLINE | ID: mdl-16908486

RESUMEN

Six healthy young male volunteers at a contract research organization were enrolled in the first phase 1 clinical trial of TGN1412, a novel superagonist anti-CD28 monoclonal antibody that directly stimulates T cells. Within 90 minutes after receiving a single intravenous dose of the drug, all six volunteers had a systemic inflammatory response characterized by a rapid induction of proinflammatory cytokines and accompanied by headache, myalgias, nausea, diarrhea, erythema, vasodilatation, and hypotension. Within 12 to 16 hours after infusion, they became critically ill, with pulmonary infiltrates and lung injury, renal failure, and disseminated intravascular coagulation. Severe and unexpected depletion of lymphocytes and monocytes occurred within 24 hours after infusion. All six patients were transferred to the care of the authors at an intensive care unit at a public hospital, where they received intensive cardiopulmonary support (including dialysis), high-dose methylprednisolone, and an anti-interleukin-2 receptor antagonist antibody. Prolonged cardiovascular shock and acute respiratory distress syndrome developed in two patients, who required intensive organ support for 8 and 16 days. Despite evidence of the multiple cytokine-release syndrome, all six patients survived. Documentation of the clinical course occurring over the 30 days after infusion offers insight into the systemic inflammatory response syndrome in the absence of contaminating pathogens, endotoxin, or underlying disease.


Asunto(s)
Anticuerpos Monoclonales/efectos adversos , Antígenos CD28/inmunología , Citocinas/sangre , Leucopenia/inducido químicamente , Insuficiencia Multiorgánica/inducido químicamente , APACHE , Adulto , Anticuerpos Monoclonales/uso terapéutico , Anticuerpos Monoclonales Humanizados , Proteína C-Reactiva/metabolismo , Cuidados Críticos , Progresión de la Enfermedad , Método Doble Ciego , Hemodinámica/efectos de los fármacos , Humanos , Hipotensión/inducido químicamente , Infusiones Intravenosas , Masculino , Insuficiencia Multiorgánica/inmunología , Insuficiencia Multiorgánica/terapia , Trombocitopenia/inducido químicamente
20.
J R Coll Physicians Edinb ; 49(2): 122-124, 2019 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-31188340

RESUMEN

The importance of tumour necrosis factor-alpha (TNF-α) in the human immune response to Borrelia burgdorferi is uncertain. Murine models suggest a critical role, including spirochaete reactivation following TNF-α inhibition. Our case, combined with a review of the clinical and scientific literature, provides reassurance that TNF-α inhibition can be safely reinstituted after treatment of disseminated borreliosis with standard duration antimicrobial chemotherapy.


Asunto(s)
Antirreumáticos/uso terapéutico , Artritis/tratamiento farmacológico , Certolizumab Pegol/uso terapéutico , Enfermedad de Lyme/tratamiento farmacológico , Adulto , Antibacterianos/uso terapéutico , Ceftriaxona/uso terapéutico , Doxiciclina/uso terapéutico , Femenino , Humanos , Sulfasalazina/uso terapéutico , Factor de Necrosis Tumoral alfa/antagonistas & inhibidores
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