Detection of SARS-CoV-2 Delta Variant (B.1.617.2) in Domestic Dogs and Zoo Tigers in England and Jersey during 2021.

Reverse zoonotic transmission events of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have been described since the start of the pandemic, and the World Organisation for Animal Health (WOAH) designated the detection of SARS-CoV-2 in animals a reportable disease. Eighteen domestic and zoo animals in Great Britain and Jersey were tested by APHA for SARS-CoV-2 during 2020-2023. One domestic cat (Felis catus), three domestic dogs (Canis lupus familiaris), and three Amur tigers (Panthera tigris altaica) from a zoo were confirmed positive during 2020-2021 and reported to the WOAH. All seven positive animals were linked with known SARS-CoV-2 positive human contacts. Characterisation of the SARS-CoV-2 variants by genome sequencing indicated that the cat was infected with an early SARS-CoV-2 lineage. The three dogs and three tigers were infected with the SARS-CoV-2 Delta variant of concern (B.1.617.2). The role of non-human species in the onward transmission and emergence of new variants of SARS-CoV-2 remain poorly defined. Continued surveillance of SARS-CoV-2 in relevant domestic and captive animal species with high levels of human contact is important to monitor transmission at the human-animal interface and to assess their role as potential animal reservoirs.

Diagnostic Accuracy of Transesophageal Echocardiographic Commissural-Biplane Approach in Identifying Mitral Valve Anatomy.

BACKGROUND: Transesophageal echocardiography (TEE) conventional multiplane approach (MPA) and the newly proposed commissural-biplane approach (CBA) are the recommended algorithms for identifying the affected mitral valve (MV) segments in the setting of mitral regurgitation. To date, there are no reports to address the diagnostic performance of CBA. In this study we aim to analyze the diagnostic accuracy of CBA and MPA in comparison with three-dimensional echocardiographic findings in patients with severe mitral regurgitation. METHODS: We prospectively enrolled 102 patients with severe mitral regurgitation. All patients underwent systematic TEE assessment of MV before surgical intervention to define the affected MV segments/scallops. The standard MPA includes 4-chamber, 2-chamber, long-axis, and commissural views; CBA was performed by obtaining the bicommissural view and simultaneous biplane imaging of the medial, middle, and lateral MV aspects. The findings of both TEE approaches were compared with three-dimensional TEE data to assess the diagnostic accuracy of MPA and CBA. RESULTS: The mean patient age was (65 ± 11) years, and 37 (36.3%) were female. We found that CBA had an overall diagnostic accuracy between 88% and 97% in identifying the abnormal MV scallops; in contrast, MPA accuracy ranged between 82% and 95%. The CBA and MPA were the least accurate in identifying the P3 scallop-88% and 82% respectively; however, both were the most accurate in assessing the A2 segment-95% and 97%, respectively. The sensitivity of identifying commissural abnormalities was 80% with CBA and 30% with MPA. Three-dimensional TEE was found to have a strong agreement with CBA (averaged kappa of 0.81, P < .0001) and a modest agreement with MPA (averaged kappa of 0.61, P < .0001) in identifying abnormal anterior or posterior segments. On the other hand, three-dimensional TEE had a weak agreement with CBA (kappa of 0.43, P < .0001) and no agreement with MPA (kappa of 0.14, P = .153) in the assessment of commissural involvements. CONCLUSION: The CBA is more accurate than the MPA in the assessment of MV commissural involvement. Given the accuracy differences of the 2 approaches for specific leaflet/scallops, a comprehensive evaluation using both approaches is recommended for all MV scallop assessments.

A novel approach to produce axial echocardiographic images by three-dimensional transesophageal echocardiography: A step-by-step guide.

Three-Dimensional (3-D) echocardiography is becoming increasingly used to diagnose and describe the spatial location of valvular pathologies and atrial septal defects during transesophageal echocardiography (TEE). The role of 3D-TEE is not well established in diagnosing other congenital heart diseases like partial anomalous pulmonary venous drainage (PAPVD) and coronary anomalous. We propose a step by step approach to producing computed tomography-simulated axial images from 3-D TEE to simplify TEE interpretation and diagnosis of cardiac abnormalities.

The risk of reverse zoonotic transmission to pet animals during the current global monkeypox outbreak, United Kingdom, June to mid-September 2022.

We report results of surveillance between June and mid-September 2022 of pet animals living in households of confirmed human monkeypox (MPX) cases. Since surveillance commenced, 154 animals from 40 households with a confirmed human MPX case were reported to the United Kingdom Animal and Plant Health Agency. No animals with clinical signs of MPX were identified. While a risk of transmission exists to pets from owners with a confirmed MPX virus infection, we assess this risk to be low.

Mechanical circulatory support in cardiogenic shock.

PURPOSE OF REVIEW: Cardiogenic shock remains a complex clinical syndrome with high morbidity and mortality. The purpose of this article is to review important landmark trials as well as the relevant recent literature for percutaneous mechanical circulatory support following acute myocardial infarction. RECENT FINDINGS: The sole use of intraaortic balloon pumps for cardiogenic shock following acute myocardial infarction continues to be questioned with downgrading of its recommendation in recent years, there however may remain a role in patients with mechanical complications of their myocardial infarction. The combined use of extracorporeal circulatory support and a ventricular unloading device appears to be promising with increasing data supporting this strategy. SUMMARY: Given the complex and heterogeneous nature of cardiogenic shock there remains somewhat limited robust data to guide clinical practice. Ongoing research is needed to help guide improvements in patient outcomes.

Altering standard admission order sets to promote clinical laboratory stewardship: a cohort quality improvement study.

BACKGROUND: Careful design of preprinted order sets is needed to prevent medical overuse. Recent work suggests that removing a single checkbox from an order set changes physicians' clinical decision-making. LOCAL PROBLEM: During a 2-month period, our coronary care unit (CCU) ordered almost eight times as many serum thyroid-stimulating hormone (TSH) tests as our neighbouring intensive care unit, many without a reasonable clinical basis. We postulated that we could reduce inappropriate testing and improve clinical laboratory stewardship by removing the TSH checkbox from the CCU admission order set. METHODS: After we retrospectively evaluated CCU TSH ordering before intervention, the checkbox was removed from the CCU admission order set. Twelve weeks later, we commenced a prospective 2-month assessment of TSH testing and clinical sequelae of thyroid disease among all CCU admissions. If clinical indications were absent or testing had occurred within 6 weeks, TSH requests were labelled as 'inappropriate'. RESULTS: Physician ordering and, specifically, inappropriate ordering decreased substantially after the intervention. In 2016 among physician-ordered TSH tests, 60.6% (66/109) were inappropriate; in 2017 this decreased to 20% (2/10, p=0.01). Overall, the net effect of checkbox removal saw the decrease in TSH testing without clinical indication outweigh an increase in missed testing where indications appear to exist. CONCLUSIONS: Provision of an optional checkbox for a laboratory test in an admission order set can promote overuse of laboratory resources. Simple removal of a checkbox may dramatically change test ordering patterns and promote clinical laboratory stewardship. Given our reliance on order sets, particularly by trainees, changes to order sets must be cautious to assure guideline-directed care is maintained.

Therapeutic Engagement and Treatment Progress: Developing and Testing an In-Treatment Measure of Client Engagement Among Sex Offenders in a Group Program.

The engagement process of sexual offenders in group-based cognitive-behavioral treatment is an important area of study. Disclosure management style (DMS), a model developed from grounded-theory research of men undertaking a prototypical program, provides a framework to assess engagement in treatment. Our goal was to develop a quantitative measure of DMS, to test its reliability and validity, and to evaluate its utility as a measure of treatment progress by examining relationships between DMS and established measures of treatment change. We studied a sample of men (N = 93) who undertook an intensive prison-based treatment program in New Zealand. Variables included DMS measures, psychometric measures of dynamic risk and treatment change, static risk, clinician rating of treatment progress, and recidivism outcomes. We found that (a) DMS shows an acceptable level of agreement between independent raters, (b) DMS-based ratings of engagement changed over the course of treatment and were correlated with measures of change based on offender self-reports, and (c) offenders showed heterogeneity in terms of their trajectories of change as assessed by DMS ratings.

Whole genome sequencing reveals an outbreak of Salmonella Enteritidis associated with reptile feeder mice in the United Kingdom, 2012-2015.

Analysis of whole genome sequencing data uncovered a previously undetected outbreak of Salmonella Enteritidis that had been on-going for four years. Cases were resident in all countries of the United Kingdom and 40% of the cases were aged less than 11 years old. Initial investigations revealed that 30% of cases reported exposure to pet snakes. A case-control study was designed to test the hypothesis that exposure to reptiles or their feed were risk factors. A robust case-definition, based on the single nucleotide polymorphism (SNP) profile, increased the power of the analytical study. Following univariable and multivariable analysis, exposure to snakes was the only variable independently associated with infection (Odds ratio 810 95% CI (85-7715) p < 0.001). Isolates of S. Enteritidis belonging to the outbreak profile were recovered from reptile feeder mice sampled at the retail and wholesale level. Control measures included improved public health messaging at point of sale, press releases and engagement with public health and veterinary counterparts across Europe. Mice destined to be fed to reptiles are not regarded as pet food and are not routinely tested for pathogenic bacteria. Routine microbiological testing to ensure feeder mice are free from Salmonella is recommended.

A novel technique to practice using a high-speed burr for spinal anterior cervical discectomy and fusion.

BACKGROUND: Anterior cervical discectomy and fusion has been a successful procedure in terms of patient satisfaction in the management of cervical myelopathy and radiculopathy. The procedure involves an anterior approach to the cervical vertebral column and decompression of the neural elements. AIM: A key part of the procedure is the removal of the posterior osteophyte. This is usually performed using a high-speed burr. In inexperienced hands, this part of the procedure can be a challenging one. MATERIALS: Egg, egg cup, zinc oxide tape and high-speed burr. CONCLUSION: We describe a simple and cost effective method of practicing this manoeuver, enabling the trainee to gain sufficient confidence in handling the tool around delicate tissues.

Impact of sublethal levels of environmental pollutants found in sewage sludge on a novel Caenorhabditis elegans model biosensor.

A transgenic strain of the model nematode Caenorhabditis elegans in which bioluminescence reports on relative, whole-organism ATP levels was used to test an environmentally-relevant mixture of pollutants extracted from processed sewage sludge. Changes in bioluminescence, following exposure to sewage sludge extract, were used to assess relative ATP levels and overall metabolic health. Reproductive function and longevity were also monitored. A short (up to 8 h) sublethal exposure of L4 larval stage worms to sewage sludge extract had a concentration-dependent, detrimental effect on energy status, with bioluminescence decreasing to 50-60% of the solvent control (1% DMSO). Following longer exposure (22-24 h), the energy status of the nematodes showed recovery as assessed by bioluminescence. Continuous exposure to sewage sludge extract from the L4 stage resulted in a shorter median lifespan relative to that of solvent or medium control animals, but only in the presence of 400-600 µM 5-fluoro-2'-deoxyuridine (FUdR), which was incorporated to inhibit reproduction. This indicated that FUdR increased lifespan, and that the effect was counteracted by SSE. Exposure to sewage sludge extract from the L1 stage led to slower growth and a delayed onset of egg laying. When L1 exposed nematodes reached the reproductive stage, no effect on egg laying rate or egg number in the uterus was observed. DMSO itself (1%) had a significant inhibitory effect on growth and development of C. elegans exposed from the L1 stage and on reproduction when exposed from the L4 stage. Results demonstrate subtle adverse effects on C. elegans of a complex mixture of environmental pollutants that are present, individually, in very low concentrations and indicate that our biosensor of energy status is a novel, sensitive, rapid, quantitative, whole-organism test system which is suitable for high throughput risk assessment of complex pollutant mixtures.

Osteolysis following resorbable poly-L-lactide-co-D, L-lactide PLIF cage use: a review of cases.

STUDY DESIGN: Report of case series. OBJECTIVE: To report a problem with bioabsorbable poly-L-lactide-co-D, L-lactide, PLDLLA, posterior lumbar instrumented fusion (PLIF) cage implants. SUMMARY OF BACKGROUND DATA: Synthetic bioabsorbable implants have recently been introduced to spinal surgery and their indications and applications are still being explored. There is evidence that the use of bioabsorbable cages may be of benefit in interbody spinal fusion. METHODS: We present a case series of nine patients who have undergone PLIF with bioabsorbable cages in the lumbar spine. RESULTS: At follow-up over at least 1 year, four of these patients were found to have osteolysis around the implant on CT scanning. One of these patients underwent an operation to remove the cage and histology sent during surgery suggested that the implant had caused the bone loss and there was no evidence of infection. Another patient had ongoing pain in relation to the lysis, while the other two patients with lysis remained asymptomatic. CONCLUSIONS: PLDLLA cage, which has high osteolytic nature, is considered not suitable as a fusion cage.

The cell membrane as a major site of damage during aerosolization of Escherichia coli.

This study aimed to provide data on the survival and site of damage of Escherichia coli cells following aerosolization using two different techniques, nebulization and flow focusing. Four metabolic stains were assessed for their ability to detect respiratory activities and membrane homeostasis in aerosolized E. coli cells. The degree of sublethal injury increased significantly over the 10-min period of aerosolization in E. coli cells aerosolized by using the Collison nebulizer, reaching up to 99.9% of the population. In contrast, a significantly lower proportion of the population was sublethally damaged during aerosolization using the flow-focusing aerosol generator (FFAG). Concomitantly, loss of membrane homeostasis increased at a higher rate in nebulized cells (68 to 71%) than in those aerosolized by using the FFAG (32 to 34%). The activities of respiratory enzymes decreased at increased rates in nebulized cells (27 to 37%) compared to the rates of decrease in cells aerosolized by using the FFAG (59 to 61%). The results indicate that the physiology of an aerosolized bacterium is linked to the method of aerosol generation and may affect the interpretation of a range of aerobiological phenomenon.

A review of the use of therapeutic communities with sexual offenders.

Sexual offender treatment programmes are often facilitated in secure settings such as prisons or psychiatric hospitals, which are not ideal environments for such treatment. Arguably, however, when these environments are structured as therapeutic communities (TCs), opportunities are created to enhance the effectiveness of treatment. This article describes the concept of a TC, its operating principles and rationale, as well as the benefits and rationale for establishing TCs in conjunction with cognitive-behavioural treatment with sexual offenders. This is discussed in terms of the potential of TCs to improve targeting of treatment content, to enhance treatment process, to provide optimal environments for therapeutic gain, and to provide a broad therapeutic framework for treating sexual offenders. The article reviews and summarizes what evidence exists for the use of TCs with both non-sexual offenders and sexual offenders. Finally, it highlights the gaps in our knowledge of the use of TCs to inspire further empirical and conceptual consideration of these issues.

Osteochondral injuries of the foot and ankle.

Osteochondral injuries commonly affect the ankle joint and involve the dome of the talus. This article describes the etiology and pathogenesis of these injuries. Their clinical presentation is described and advice is given on how to diagnose and investigate suspected osteochondral injuries. The various treatment options currently available are briefly reviewed. There is some attempt made to give consensus on optimal treatment of this condition at the present time.

Tenotomy versus tenodesis in the management of pathologic lesions of the tendon of the long head of the biceps brachii.

BACKGROUND: Primary and secondary lesions of the tendon of the long head of the biceps brachii are common, with no clear consensus about their optimal management. HYPOTHESIS: There is no difference in outcomes of tenotomy and tenodesis for lesions of the tendon of the long head of the biceps brachii. STUDY DESIGN: We performed a comprehensive quantitative review of the published English-language literature comparing the outcomes of tenotony and tenodesis for lesions of the tendon of the long head of the biceps brachii. METHODS: All relevant articles in peer-reviewed journals were retrieved, and each article was scored using the Coleman Methodology Score, a highly repeatable methodology score, by 2 independent reviewers. RESULTS: Scores were predominantly low for quality of the studies, with patient number and validated outcome measures being the weakest areas. CONCLUSION: There is a lack of quality evidence to advocate one technique over the other. We emphasize the need for appropriately powered, well-conducted, randomized, controlled trials comparing the outcomes of these 2 procedures. There is little difference in the outcome of tenotomy compared with tenodesis. Tenotomy is easy and quick, with less need for postoperative rehabilitation. We therefore suggest that biceps tenotomy be the preferred method. Clinical Relevance Biceps pathologic lesions are common. There is no evidence base for their most appropriate management.

Operative management of tennis elbow: a quantitative review.

INTRODUCTION: The results of operative management of tennis elbow are varied, and the indications for surgery are not well codified. Many operative techniques are reported, but a clear consensus on whether a given surgical procedure is more effective over another is yet to be reached. METHODS: We conducted a MEDLINE, CINAHL and EMBASE search on all available scientific articles that reported the outcomes of surgery for lateral epicondylopathy. Keywords used were 'tennis elbow', 'lateral epicondylitis', 'lateral epicondylalgia', 'tendinopathy', 'tendonitis' and 'tendon'. Subheadings used were 'surgery', 'outcomes', 'pathology', 'physiology' and 'operation'. All relevant articles were retrieved. Each article was scored using the Coleman methodology score (CMS), a highly repeatable methodology score, by two independent reviewers, followed by data analysis. RESULTS: The mean CMS for the 45 studies identified was 43 +/- 9 (of a possible 100 points), with 'number of patients', 'type of study', 'outcome criteria and assessment' and 'subject selection process' being the major low scorers. Also, there was no improvement in the CMS, and hence study design, over the years (intra-class correlation coefficient = 0.45). DISCUSSION: There is a dearth of quality evidence available to be able to advocate one operative technique over another. CONCLUSION: We stress the need for well-designed adequately powered randomized controlled trials to be able to understand which of these operative techniques is really superior to the others.