Neural Mechanisms Associated With Postural Control in Collegiate Soccer and Non-Soccer Athletes.

BACKGROUND AND PURPOSE: Sport-specific training may improve postural control, while repetitive head acceleration events (RHAEs) may compromise it. Understanding the neural mechanisms underlying postural control may contextualize changes due to training and RHAE. The goal of this study was to determine whether postural sway during the Balance Error Scoring System (BESS) is related to white matter organization (WMO) in collegiate athletes. METHODS: Collegiate soccer (N = 33) and non-soccer athletes (N = 44) completed BESS and diffusion tensor imaging. Postural sway during each BESS stance, fractional anisotropy (FA), and mean diffusivity (MD) were extracted for each participant. Partial least squares analyses determined group differences in postural sway and WMO and the relationship between postural sway and WMO in soccer and non-soccer athletes separately. RESULTS: Soccer athletes displayed better performance during BESS 6, with lower FA and higher MD in the medial lemniscus (ML) and inferior cerebellar peduncle (ICP), compared to non-soccer athletes. In soccer athletes, lower sway during BESS 2, 5, and 6 was associated with higher FA and lower MD in the corticospinal tract, ML, and ICP. In non-soccer athletes, lower sway during BESS 2 and 4 was associated with higher FA and lower MD in the ML and ICP. BESS 1 was associated with higher FA, and BESS 3 was associated with lower MD in the same tracts in non-soccer athletes. DISCUSSION AND CONCLUSIONS: Soccer and non-soccer athletes showed unique relationships between sway and WMO, suggesting that sport-specific exposures are partly responsible for changes in neurological structure and accompanying postural control performance and should be considered when evaluating postural control after injury.Video Abstract available for more insights from the authors (see the Video, Supplemental Digital Content, available at: http://links.lww.com/JNPT/A472).

Immune response kinetics to SARS-CoV-2 infection and COVID-19 vaccination among nursing home residents-Georgia, October 2020-July 2022.

BACKGROUND: Understanding the immune response kinetics to SARS-CoV-2 infection and COVID-19 vaccination is important in nursing home (NH) residents, a high-risk population. METHODS: An observational longitudinal evaluation of 37 consenting vaccinated NH residents with/without SARS-CoV-2 infection from October 2020 to July 2022 was conducted to characterize the immune response to spike protein due to infection and/or mRNA COVID-19 vaccine. Antibodies (IgG) to SARS-CoV-2 full-length spike, nucleocapsid, and receptor binding domain protein antigens were measured, and surrogate virus neutralization capacity was assessed using Meso Scale Discovery immunoassays. The participant's spike exposure status varied depending on the acquisition of infection or receipt of a vaccine dose. Longitudinal linear mixed effects modeling was used to describe trajectories based on the participant's last infection or vaccination; the primary series mRNA COVID-19 vaccine was considered two spike exposures. Mean antibody titer values from participants who developed an infection post receipt of mRNA COVID-19 vaccine were compared with those who did not. In a subset of participants (n = 15), memory B cell (MBC) S-specific IgG (%S IgG) responses were assessed using an ELISPOT assay. RESULTS: The median age of the 37 participants at enrollment was 70.5 years; 30 (81%) had prior SARS-CoV-2 infection, and 76% received Pfizer-BioNTech and 24% Moderna homologous vaccines. After an observed augmented effect with each spike exposure, a decline in the immune response, including %S IgG MBCs, was observed over time; the percent decline decreased with increasing spike exposures. Participants who developed an infection at least two weeks post-receipt of a vaccine were observed to have lower humoral antibody levels than those who did not develop an infection post-receipt. CONCLUSIONS: These findings suggest that understanding the durability of immune responses in this vulnerable NH population can help inform public health policy regarding the timing of booster vaccinations as new variants display immune escape.

PTH treatment before cyclic joint loading improves cartilage health and attenuates load-induced osteoarthritis development in mice.

Osteoarthritis (OA) treatment is limited by the lack of effective nonsurgical interventions to slow disease progression. Here, we examined the contributions of the subchondral bone properties to OA development. We used parathyroid hormone (PTH) to modulate bone mass before OA initiation and alendronate (ALN) to inhibit bone remodeling during OA progression. We examined the spatiotemporal progression of joint damage by combining histopathological and transcriptomic analyses across joint tissues. The additive effect of PTH pretreatment before OA initiation and ALN treatment during OA progression most effectively attenuated load-induced OA pathology. Individually, PTH directly improved cartilage health and slowed the development of cartilage damage, whereas ALN primarily attenuated subchondral bone changes associated with OA progression. Joint damage reflected early transcriptomic changes. With both treatments, the structural changes were associated with early modulation of immunoregulation and immunoresponse pathways that may contribute to disease mechanisms. Overall, our results demonstrate the potential of subchondral bone-modifying therapies to slow the progression of OA.

In EPAs we trust, is quality and safety a must? A cross-specialty analysis of entrustable professional activity guides.

PURPOSE: The inclusion of quality improvement (QI) and patient safety (PS) into CanMEDS reflects an expectation that graduating physicians are competent in these areas upon training completion. To ensure that Canadian postgraduate specialty training achieves this, the translation of QI/PS competencies into training standards as part of the implementation of competency-based medical education requires special attention. METHODS: We conducted a cross-specialty, multi-method analysis to examine how QI/PS was incorporated into the EPA Guides across 11 postgraduate specialties in Canada. RESULTS: We identify cross-specialty variability in how QI/PS is incorporated, positioned, and emphasized in EPAs and milestones. QI/PS was primarily referenced alongside clinical activities rather than as a sole competency or discrete activity. Patterns were characterized in how QI/PS became incorporated into milestones through repetition and customization. QI/PS was also decoupled, conceptualized, and emphasized differently across specialties. CONCLUSIONS: Variability in the inclusion of QI/PS in EPAs and milestones has important implications considering the visibility and influence of EPA Guides in practice. As specialties revisit and revise EPA Guides, there is a need to balance the standardization of foundational QI/PS concepts to foster shared understanding while simultaneously ensuring context-sensitive applications across specialties. Beyond QI/PS, this study illuminates the challenges and opportunities that lie in bridging theoretical frameworks with practical implementation in medical education, prompting broader consideration of how intrinsic roles and emergent areas are effectively incorporated into competency-based medical education.

Effects of high frequency strengthening on pain sensitivity and function in female runners with chronic patellofemoral pain.

OBJECTIVE: To investigate the effects of a high frequency strengthening program on function, pain, and pain sensitization in female runners with chronic patellofemoral pain (PFP). DESIGN: Cross-sectional study. SETTING: University laboratory. PARTICIPANTS: Thirty female runners (mean age 32 ± 8.1 years) with chronic PFP completed an 8-week home strengthening program. MAIN OUTCOME MEASURES: Variables assessed at baseline, 8-weeks, and 12 weeks included single leg step down test (SLSD), pain, Anterior Knee Pain Scale (AKPS), University of Wisconsin Running Injury and Recovery Index (UWRI), and quantitative sensory testing. RESULTS: There was large and statistically significant improvement at 8 and 12 weeks for average knee pain (ηp2 = 0.334, p < 0.001), worst knee pain (ηp2 = 0.351, p < 0.001), SLSD (ηp2 = 0.161, p = 0.001), AKPS (ηp2 = 0.463, p < 0.001), and UWRI (ηp2 = 0.366, p < 0.001). A medium to large effect and statistically significant improvement in pressure pain threshold testing was found for all local and remote structures (ηp2 range, 0.110 to 0.293, range p < 0.001 to p = 0.009) at 8 and 12 weeks. CONCLUSIONS: There was a significant decrease in local and remote hyperalgesia via mechanical and thermal pain sensitivity testing in female runners with chronic PFP. There was a large effect and significant improvement in self-reported pain and function.

The relationship of behavioral and psychological traits with pain sensitivity in females with patellofemoral pain: A cross-sectional study.

OBJECTIVE: The purpose of this study was to describe the relationship between behavioral and psychological traits with indicators of central sensitization in female runners with patellofemoral pain (PFP), and to determine if behavioral and psychological traits improve with strength training. DESIGN: Cross-sectional study. SETTING: University laboratory. PARTICIPANTS: Twenty-eight active females (mean age 32 ± 8.1 years) with PFP completed testing at baseline, 8 weeks (post intervention), and 12 weeks. MAIN OUTCOME MEASURES: Behavioral and psychological questionnaires included the General Anxiety Disorder-7, Patient Health Questionairre-9, Pain Catastrophizing Scale, Tampa Scale of Kinesiophobia-11, and Central Sensitization Inventory. Quantitative sensory testing (QST) measures were also collected. After baseline testing, subjects were instructed in a hip and knee strengthening intervention to be completed twice daily over 8 weeks. RESULTS: A statistically significant improvement was found at 12 weeks for anxiety (p = .015; ηp (Boling et al., 2010) = 0.099) and kinesiophobia (p = .041; ηp (Boling et al., 2010) = 0.076). There was no significant improvement for depression, catastrophizing, or subjective central sensitization. No significant correlations were found between any of the behavioral and psychological questionnaires with baseline QST variables. CONCLUSIONS: No relationship was found for behavioral and psychological characteristics with QST measures in female runners with persistent PFP.

Descriptive analysis of targeted carbapenemase genes and antibiotic susceptibility profiles among carbapenem-resistant Acinetobacter baumannii tested in the Antimicrobial Resistance Laboratory Network-United States, 2017-2020.

Acinetobacter baumannii is a Gram-negative bacillus that can cause severe and difficult-to-treat healthcare-associated infections. A. baumannii can harbor mobile genetic elements carrying genes that produce carbapenemase enzymes, further limiting therapeutic options for infections. In the United States, the Antimicrobial Resistance Laboratory Network (AR Lab Network) conducts sentinel surveillance of carbapenem-resistant Acinetobacter baumannii (CRAB). Participating clinical laboratories sent CRAB isolates to the AR Lab Network for characterization, including antimicrobial susceptibility testing and molecular detection of class A (Klebsiella pneumoniae carbapenemase), class B (Active-on-Imipenem, New Delhi metallo-ß-lactamase, and Verona integron-encoded metallo-ß-lactamase), and class D (Oxacillinase, blaOXA-23-like, blaOXA-24/40-like, blaOXA-48-like, and blaOXA-58-like) carbapenemase genes. During 2017‒2020, 6,026 CRAB isolates from 45 states were tested for targeted carbapenemase genes; 1% (64 of 5,481) of CRAB tested for targeted class A and class B genes were positive, but 83% (3,351 of 4,041) of CRAB tested for targeted class D genes were positive. The number of CRAB isolates carrying a class A or B gene increased from 2 of 312 (<1%) tested in 2017 to 26 of 1,708 (2%) tested in 2020. Eighty-three percent (2,355 of 2,846) of CRAB with at least one of the targeted carbapenemase genes and 54% (271 of 500) of CRAB without were categorized as extensively drug resistant; 95% (42 of 44) of isolates carrying more than one targeted gene had difficult-to-treat susceptibility profiles. CRAB isolates carrying targeted carbapenemase genes present an emerging public health threat in the United States, and their rapid detection is crucial to improving patient safety.IMPORTANCEThe Centers for Disease Control and Prevention has classified CRAB as an urgent public health threat. In this paper, we used a collection of >6,000 contemporary clinical isolates to evaluate the phenotypic and genotypic properties of CRAB detected in the United States. We describe the frequency of specific carbapenemase genes detected, antimicrobial susceptibility profiles, and the distribution of CRAB isolates categorized as multidrug resistant, extensively drug-resistant, or difficult to treat. We further discuss the proportion of isolates showing susceptibility to Food and Drug Administration-approved agents. Of note, 84% of CRAB tested harbored at least one class A, B, or D carbapenemase genes targeted for detection and 83% of these carbapenemase gene-positive CRAB were categorized as extensively drug resistant. Fifty-four percent of CRAB isolates without any of these carbapenemase genes detected were still extensively drug-resistant, indicating that infections caused by CRAB are highly resistant and pose a significant risk to patient safety regardless of the presence of one of these carbapenemase genes.

Initiating advance care planning at admission: a brief intervention to increase goals of care discussions in geriatric trauma patients in an urban level I trauma center.

Objectives: The burden of geriatric trauma continues to rise. Older trauma patients experience higher morbidity and mortality and thus benefit from early goals of care (GOC) discussions and advance care planning (ACP). The American College of Surgeons (ACS) Trauma Quality Improvement Program (TQIP) recommends holding a family meeting within 72 hours of admission when treating geriatric trauma patients. At our level I trauma center, we sought to increase early GOC discussions by implementing a new history and physical (H&P) note template for geriatric trauma patients. Methods: Patients (aged >65 years) admitted to the trauma surgery service (≥24 hours) were included in the study. The intervention was a change in the H&P note template to include confirmation of code status or previous ACP and identification of a healthcare proxy. Primary outcomes were the rates of recognizing a pre-existing Do-Not-Resuscitate (DNR) status/advanced directives at admission and of documentation of a GOC discussion within 72 hours. Outcomes from a 3-month period (March-May) during the pre-intervention (2021) and post-intervention (2022) periods were compared. Results: The pre-intervention and post-intervention groups had 107 and 150 patients, respectively. We observed an increase in recognition of pre-existing DNR code status at time of admission from 50% to 95% (p=0.003) and documentation of a GOC discussion within 72 hours from 17% to 83% (p<0.0001). We also observed a trend showing that new DNR orders were placed more frequently in the post-intervention period (9% vs 17%, p=0.098). The in-hospital mortality was not significantly different. Conclusions: The importance of GOC discussions and ACP documentation for geriatric trauma patients is evident, but its completion can be challenging. Our intervention of a new H&P note template increased GOC discussions, and this implementation may be feasible in other trauma centers to comply with the ACS-TQIP Geriatric Trauma Management Guidelines. Level of evidence: Level III.

Antimicrobial Resistance Laboratory Network's multisite evaluation of the ThermoFisher Sensititre GN7F broth microdilution panel for antimicrobial susceptibility testing.

In 2017, the Centers for Disease Control and Prevention (CDC) established the Antimicrobial Resistance Laboratory Network to improve domestic detection of multidrug-resistant organisms. CDC and four laboratories evaluated a commercial broth microdilution panel. Antimicrobial susceptibility testing using the Sensititre GN7F (ThermoFisher Scientific, Lenexa, KS) was evaluated by testing 100 CDC and Food and Drug Administration AR Isolate Bank isolates [40 Enterobacterales (ENT), 30 Pseudomonas aeruginosa (PSA), and 30 Acinetobacter baumannii (ACB)]. We assessed multiple amounts of transfer volume (TV) between the inoculum and tubed 11-mL cation-adjusted Mueller-Hinton broth: 1 µL [tribe Proteeae (P-tribe) only] and 10, 30, and 50 µL, resulting in respective CFU per milliter of 1 × 104, 1 × 105, 3 × 105, and 5 × 105. Four TV combinations were analyzed: standard (STD) [1 µL (P-tribe) and 10 µL], enhanced standard (E-STD) [1 µL (P-tribe) and 30 µL], 30 µL, and 50 µL. Essential agreement (EA), categorical agreement, major error (ME), and very major error (VME) were analyzed by organism then TVs. For ENT, the average EA across laboratories was <90% for 7 of 15 ß-lactams using STD and E-STD TVs. As TVs increased, EA increased (>90%), and VMEs decreased. For PSA, EA improved as TVs increased; however, MEs also increased. For ACB, increased TVs provided slight EA improvements; all TVs yielded multiple VMEs and MEs. For ENT and ACB, Minimum inhibitory concentrations (MICs) trended downward using a 1 or 10 µL TV; there were no obvious MIC trends by TV for PSA. The public health and clinical consequences of missing resistance warrant increased TV of 30 µL for the GN7F, particularly for P-tribe, despite being considered "off-label" use.

Codesigning Policy-Based Solutions to Discrimination and Harassment in Academic Medicine: An Inclusive Approach.

ABSTRACT: Academic medicine institutions have historically employed policies as a means to tackle various types of discrimination and harassment within educational and professional settings, thereby affirming their dedication to promoting diversity, equity, and inclusion. However, the implementation and effectiveness of policies are constrained by limitations, including a lack of awareness and barriers to reporting. Due to concerns about accountability and transparency, many groups and individuals experiencing discrimination have lost trust in policy-based solutions to address equity in academic medicine. To address such challenges, the authors offer an evidence-informed policy framework with actionable recommendations. First, policy should be cowritten through meaningful and participatory engagement. Second, organizations should publicly report on metrics of policy effectiveness. Third, to ensure accountability, external organizations or adjudicators should be involved in oversight of policy-based processes. Fourth, leadership commitment is essential for success. Overall, policy can be an effective mechanism to address discrimination and harassment; however, a more inclusive approach is needed.

Equity, diversity, and exclusion? A national mixed methods study of "belonging" in Canadian undergraduate medical education.

Equity, diversity, and inclusion remain a prominent focus in medical schools, yet the phenomenon of "belonging" has arguably been overlooked. Little is known regarding how belonging is experienced by medical students from groups that face systemic oppression and exclusion. We employed a sequential explanatory mixed methods design to explore how students from equity-deserving groups (EDGs) experience belonging during medical school, including those who are women, racialized, Indigenous, disabled, and 2SLGBTQIA+. First, we conducted a national cross-sectional survey of medical students (N = 480) measuring four constructs: belonging, imposter syndrome, burnout, and depression. Belonging scores were overall lower for students from EDGs and, more specifically, significantly lowest amongst racialized students. Structural equation models show that poor sense of belonging precedes imposter syndrome and further exacerbates burnout and depression. Next, we sampled and interviewed students (N = 16) from the EDG whose belonging scores were significantly lowest. Participants described the essence of belonging as being able to exist as one's "true self" while emphasizing feelings of acceptance, comfort, and safety as well as being valued and seen as an equal - yet described how routine experiences of "othering" inhibited a sense of belonging, often due to differences in social identity and structural privilege. Poor sense of belonging negatively affected learners' well-being and career trajectory. We illuminate the range of psychological and professional consequences associated with diminished sense of belonging and highlight the need to expand traditional notions of equity, diversity, and inclusion to consider structural barriers to belonging.

A revision of the parasitoid wasp genus Alphomelon Mason with the description of 30 new species (Hymenoptera, Braconidae).

The parasitoid wasp genus Alphomelon Mason, 1981 is revised, based on a combination of basic morphology (dichotomous key and brief diagnostic descriptions), DNA barcoding, biology (host data and wasp cocoons), and distribution data. A total of 49 species is considered; the genus is almost entirely Neotropical (48 species recorded from that region), but three species reach the Nearctic, with one of them extending as far north as 45° N in Canada. Alphomelon parasitizes exclusively Hesperiinae caterpillars (Lepidoptera: Hesperiidae), mostly feeding on monocots in the families Arecaceae, Bromeliaceae, Cannaceae, Commelinaceae, Heliconiaceae, and Poaceae. Most wasp species parasitize either on one or very few (2-4) host species, usually within one or two hesperiine genera; but some species can parasitize several hosts from up to nine different hesperiine genera. Among species with available data for their cocoons, roughly half weave solitary cocoons (16) and half are gregarious (17); cocoons tend to be surrounded by a rather distinctive, coarse silk (especially in solitary species, but also distinguishable in some gregarious species). Neither morphology nor DNA barcoding alone was sufficient on its own to delimit all species properly; by integrating all available evidence (even if incomplete, as available data for every species is different) a foundation is provided for future studies incorporating more specimens, especially from South America. The following 30 new species are described: cruzi, itatiaiensis, and palomae, authored by Shimbori & Fernandez-Triana; and adrianguadamuzi, amazonas, andydeansi, calixtomoragai, carolinacanoae, christerhanssoni, diniamartinezae, duvalierbricenoi, eldaarayae, eliethcantillanoae, gloriasihezarae, guillermopereirai, hazelcambroneroae, josecortesi, keineraragoni, luciarosae, manuelriosi, mikesharkeyi, osvaldoespinozai, paramelanoscelis, paranigriceps, petronariosae, ricardocaleroi, rigoi, rostermoragai, sergioriosi, and yanayacu, authored by Fernandez-Triana & Shimbori.

Equity, Diversity, and Inclusion moments to raise Equity, Diversity, and Inclusion literacy among physician leaders.

Previous research in our department on equity-deserving groups revealed that physician leaders could improve their understanding of barriers faced by physicians from these groups. We developed EDI Moments, a brief, recurring educational intervention, to raise the EDI literacy of physician leaders in our Department of Medicine. In addition to being considered a good use of time by attendees, EDI Moments have led to new processes and policies to improve EDI in our department. Teams that implement EDI Moments should leverage local EDI expertise and select topics suited for their audience's baseline knowledge.

Des travaux antérieurs menées dans notre département sur les groupes visés par l'équité ont révélé que les médecins leaders avaient une compréhension insuffisante des obstacles auxquels sont confrontés les médecins appartenant à ces groupes. Nous avons créé les Moments EDI, une brève intervention éducative périodique visant à améliorer les connaissances des médecins leaders de notre département de médecine d'EDI. Ceux qui y ont assisté estiment que cela a été un bon investissement de leur temps, mais les Moments EDI ont avant tout déclenché l'élaboration de processus et de politiques pour renforcer l'EDI dans le département. Les équipes qui organisent les Moments EDI devraient tirer parti de l'expertise locale en matière d'EDI et choisir des sujets adaptés aux connaissances de base de leur public.

A Multi-Institutional Experience Utilizing Boari Flap in Robotic Urinary Reconstruction.

Objectives: There is presently scarce literature describing the outcomes of patients undergoing robotic ureteral reconstruction (RUR) using the Boari flap (BF) technique. Herein, we report our prospective, multi-institutional experience using BF in patients undergoing robotic urinary reconstruction. Patients and Methods: We reviewed our prospective, multicenter database for all patients undergoing RUR between September 2013 and September 2021 in which a BF was utilized. Preoperative, perioperative, and follow-up data were collected and analyzed. Major complications were defined as a Clavien-Dindo classification grade >2. Surgical failure was defined as recurrent symptoms, obstruction on imaging, or the need for additional surgical interventions. Results: We identified 50 patients who underwent RUR using a BF. Four (8%) underwent the Single Port approach. Twenty-four patients (48%) were active or former tobacco users. Thirty-four patients (68%) had previously undergone abdominal surgery, 17 (34%) had prior ureteral stricture interventions, and 9 (18%) had prior abdominopelvic radiation. The most common stricture etiology was malignancy (34.4%). The median follow-up was 15.0 months with a 90% (45/50) success rate. The five documented cases of failure occurred at a median of 1.8 months following the procedure. Conclusion: In the largest prospective, multi-institutional study of patients undergoing RUR with BF in the literature to date, we demonstrate a low rate of complications and a high rate of surgical success in three tertiary academic medical centers. All observed failures occurred within 2 months of surgical intervention.

Signs of Nervous System Sensitization in Female Runners with Chronic Patellofemoral Pain.

Background: Patellofemoral pain (PFP) is a common overuse injury among runners, affecting females at a higher rate than males. PFP can often become chronic, with evidence suggesting it may be linked to both peripheral and central sensitization of the nervous system. Sensitization of the nervous system can be identified through quantitative sensory testing (QST). Hypothesis/Purpose: The primary objective of this pilot study was to quantify and compare pain sensitivity as identified through QST measures, in active female runners with and without PFP. Study Design: Cohort Study. Methods: Twenty healthy female runners and 17 female runners with chronic PFP symptoms were enrolled. Subjects completed the Knee injury and Osteoarthritis Outcome Score for Patellofemoral Pain (KOOS-PF), University of Wisconsin Running Injury and Recovery Index (UWRI), and the Brief Pain Inventory (BPI). QST consisted of pressure pain threshold testing to three local and three distant sites to the knee, heat temporal summation, heat pain threshold, and conditioned pain modulation. Data was analyzed utilizing independent t-tests for comparison of between-group data, effect sizes for QST measures (Pearson's r), and Pearson's correlation coefficient between pressure pain threshold values at the knee and functional testing. Results: The PFP group exhibited significantly lower scores on the KOOS-PF (p<0.001), BPI Pain Severity and Interference Scores (p<0.001), and UWRI (p<0.001). Primary hyperalgesia, identified through decreased pressure pain threshold at the knee, was detected in the PFP group at the central patella (p<0.001), lateral patellar retinaculum (p=0.003), and patellar tendon (p=0.006). Secondary hyperalgesia, a sign of central sensitization, was observed via differences in pressure pain threshold testing for the PFP group at the uninvolved knee (p=0.012 to p=0.042), involved extremity remote sites (p=0.001 to p=0.006), and uninvolved extremity remote sites (p=0.013 to p=0.021). Conclusion: Compared to healthy controls, female runners with chronic PFP symptoms exhibit signs of both peripheral sensitization. Despite actively participating in running, nervous system sensitization may contribute to continued pain in these individuals. For female runners with chronic PFP, physical therapy management may need to include interventions which address signs of central and peripheral sensitization. Level of Evidence: Level 3.

Increased Multidrug-Resistant Salmonella enterica I Serotype 4,[5],12:i:- Infections Associated with Pork, United States, 2009-2018.

Reports of Salmonella enterica I serotype 4,[5],12:i:- infections resistant to ampicillin, streptomycin, sulphamethoxazole, and tetracycline (ASSuT) have been increasing. We analyzed data from 5 national surveillance systems to describe the epidemiology, resistance traits, and genetics of infections with this Salmonella strain in the United States. We found ASSuT-resistant Salmonella 4,[5],12:i:- increased from 1.1% of Salmonella infections during 2009-2013 to 2.6% during 2014-2018; the proportion of Salmonella 4,[5],12:i:- isolates without this resistance pattern declined from 3.1% to 2.4% during the same timeframe. Among isolates sequenced during 2015-2018, a total of 69% were in the same phylogenetic clade. Within that clade, 77% of isolates had genetic determinants of ASSuT resistance, and 16% had genetic determinants of decreased susceptibility to ciprofloxacin, ceftriaxone, or azithromycin. Among outbreaks related to the multidrug-resistant clade, 63% were associated with pork consumption or contact with swine. Preventing Salmonella 4,[5],12:i:- carriage in swine would likely avert human infections with this strain.

"This shouldn't be our job to help you do this": exploring the responses of medical schools across Canada to address anti-Black racism in 2020.

BACKGROUND: Protests against police brutality and anti-Black racism were catalyzed by the murder of George Floyd and other Black and racialized people in spring 2020. Addressing anti-Black racism had been historically minimized as an institutional priority across Canadian medical schools, but many swiftly released statements broadly condemning racism. Given that little has been documented about how institutions are responding with action, we sought to explore Black medical students' and senior faculty perspectives on Canadian medical schools' efforts to address anti-Black racism in 2020. METHODS: We conducted a qualitative, instrumental case study, grounded in critical race theory. We recruited Black medical students and deans (or delegated senior faculty administrators) and we conducted virtual, individual, semi-structured interviews with participants between Oct. 5, 2020, and Jan. 16, 2021. Interviews were transcribed and iteratively analyzed through inductive and deductive techniques. RESULTS: We interviewed 19 participants, including 8 medical students (6 in pre-clerkship; all of whom identified as Black) and 11 senior faculty administrators (4 deans, 7 delegate faculty administrators; 3 racialized). We had at least 1 student or faculty participant from 13 medical schools, and no student or faculty participants from the 4 medical schools in Quebec. Nearly all represented medical schools were described as "starting from scratch" in their responses, having previously failed to acknowledge or address anti-Black racism. In the absence of diverse faculty leaders, participants indicated that medical schools primarily relied on Black medical students to drive institutional responses, unfairly burdening students during an already difficult period. At the time of the interviews, a range of initiatives were in the planning stages or underway, and were largely related to admissions and curriculum reform. INTERPRETATION: We found that medical schools relied heavily on Black medical students to inform and drive their institutional responses related to anti-Black racism in 2020, which these students found burdensome. Medical schools lacked intrinsic capacity because of the paucity of Black faculty - a direct result of historical and ongoing structural anti-Black racism in medicine. Institutional accountability remains critical, and further research is needed to show the extent to which medical schools in Canada are successfully addressing anti-Black racism.

Longitudinal serologic and viral testing post-SARS-CoV-2 infection and post-receipt of mRNA COVID-19 vaccine in a nursing home cohort-Georgia, October 2020‒April 2021.

There are limited data describing SARS-CoV-2-specific immune responses and their durability following infection and vaccination in nursing home residents. We conducted a prospective longitudinal evaluation of 11 consenting SARS-CoV-2-positive nursing home residents to evaluate the quantitative titers and durability of binding antibodies detected after SARS-CoV-2 infection and subsequent COVID-19 vaccination. The evaluation included nine visits over 150 days from October 25, 2020, through April 1, 2021. Visits included questionnaire administration, blood collection for serology, and paired anterior nasal specimen collection for testing by BinaxNOW™ COVID-19 Ag Card (BinaxNOW), reverse transcription polymerase chain reaction (RT-PCR), and viral culture. We evaluated quantitative titers of binding SARS-CoV-2 antibodies post-infection and post-vaccination (beginning after the first dose of the primary series). The median age among participants was 74 years; one participant was immunocompromised. Of 10 participants with post-infection serology results, 9 (90%) had detectable Pan-Ig, IgG, and IgA antibodies, and 8 (80%) had detectable IgM antibodies. At first antibody detection post-infection, two-thirds (6/9, 67%) of participants were RT-PCR-positive, but none were culture- positive. Ten participants received vaccination; all had detectable Pan-Ig, IgG, and IgA antibodies through their final observation ≤90 days post-first dose. Post-vaccination geometric means of IgG titers were 10-200-fold higher than post-infection. Nursing home residents in this cohort mounted robust immune responses to SARS-CoV-2 post-infection and post-vaccination. The augmented antibody responses post-vaccination are potential indicators of enhanced protection that vaccination may confer on previously infected nursing home residents.

Exploring the relationship between social accountability and competency-based medical education: A narrative review.

BACKGROUND: Social accountability (SA), a quintessential goal of medical education, has been discussed as a precipitant for the transition toward competency-based medical education (CBME). However, the relationship between SA and CBME remains unclear. A narrative review was conducted to systematically explore the relationship between SA and CBME as described in the literature. METHODS: Electronic databases, select journals, and medical education organizations were systematically searched. 363 titles and abstracts were screened and 147 full texts were reviewed. The salient text was extracted from 36 records, which were then inductively coded before narrative synthesis and interpretation. RESULTS: The relationship between SA and CBME was described in three manners: (1) CBME as a natural driver of SA where CBME was perceived to be inherently socially accountable, (2) CBME as an opportunistic mechanism for actively changing medical training to better meet standards of SA, and (3) CBME as a tool to measure SA relating to measurable outcomes data provided by CBME. CONCLUSION: CBME has theoretical potential to assist programs in becoming more socially accountable if the communities they serve are considered key stakeholders in the design, implementation, and evaluation. A paucity of evidence remains which provides empirical evidence of SA within programs that have implemented CBME.