Chromosomal and plasmid-borne AmpC cephalosporinases are a major resistance mechanism to β-lactams in Enterobacteriaceae and Pseudomonas aeruginosa. The new β-lactamase inhibitor avibactam effectively inhibits class C enzymes and can fully restore ceftazidime susceptibility. The conserved amino acid residue Asn³⁴⁶ of AmpC cephalosporinases directly interacts with the avibactam sulfonate. Disruption of this interaction caused by the N³⁴⁶Y amino acid substitution in Citrobacter freundii AmpC was previously shown to confer resistance to the ceftazidime-avibactam combination (CAZ-AVI). The aim of this study was to phenotypically and biochemically characterize the consequences of the N³⁴⁶Y substitution in various AmpC backgrounds. Introduction of N³⁴⁶Y into Enterobacter cloacae AmpC (AmpC_cloacae), plasmid-mediated DHA-1, and P. aeruginosa PDC-5, led to 270-, 12,000-, and 79-fold decreases in the inhibitory efficacy (k₂/K_i) of avibactam, respectively. The kinetic parameters of AmpC_cloacaeand DHA-1 for ceftazidime hydrolysis were moderately affected by the substitution. Accordingly, AmpC_cloacaeand DHA-1 harboring N³⁴⁶Y conferred CAZ-AVI resistance (MIC of ceftazidime of 16 µg/ml in the presence of 4 µg/ml of avibactam). In contrast, production of PDC-5 N³⁴⁶Y was associated with a lower MIC (4 µg/ml) since this β-lactamase retained a higher inactivation efficacy by avibactam in comparison to AmpC_cloacaeN³⁴⁶Y. For FOX-3, the I³⁴⁶Y substitution did not reduce the inactivation efficacy of avibactam and the substitution was highly deleterious for β-lactam hydrolysis, including ceftazidime, preventing CAZ-AVI resistance. Since AmpC_cloacaeand DHA-1 display substantial sequence diversity, our results suggest that loss of hydrogen interaction between Asn³⁴⁶ and avibactam could be a common mechanism of acquisition of CAZ-AVI resistance.

Tedizolid has demonstrated its efficacy and safety in clinical trials, however, data concerning its tolerability in long-term treatments is scarce. The aim of the study was to assess the indications and to describe the long-term safety profile of tedizolid.

A multicentric, retrospective study of patients who received tedizolid for more than 6-days was conducted. Adverse events (AEs) were identified from patients' medical records and laboratory data. The World Health Organization causality categories were used to discern AEs probably associated with tedizolid.

Eighty-one patients, treated with tedizolid 200mg once-daily for a median (IQR) duration of 28 (14-59) days, were included, 36 (44.4%) had previously received linezolid. Most common reasons for selecting tedizolid were to avoid linezolid potential toxicities or interactions (53.1%) or due to previous linezolid-related toxicities (27.2%). Most common indications were off-label, including prosthetic joint infections, osteomyelitis and respiratory infections (77.8%). Overall, 9/81 patients (11.1%) experienced a probably associated AE. Two patients (2.5%) developed gastrointestinal disorders, 1 (1.2%) anemia and 6 thrombocytopenia (7.4%) after a median (IQR) duration of treatment of 26.5 (17-58.5) days. Four (5%) patients discontinued tedizolid due to AEs. Among 23 patients with chronic renal failure (CRF) the rate of mielotoxicity was 17.4% and only 8.7% had to stop tedizolid and 20 out of 22 with previous linezolid-associated toxicity had no AE.

Long-term tedizolid treatments had good tolerance with rates of gastrointestinal AE and hematological toxicity lower than those reported with linezolid, particularly in patients with CRF and in those with a previous history of linezolid-associated toxicity.

Objectives: Empiric antibiotic prescribing can be supported by guidelines and/or local antibiograms, but these have limitations. We sought to use data from a comprehensive electronic health record to use statistical learning to develop predictive models for individual antibiotics that incorporate patient-, and hospital-specific factors. This paper reports on the development and validation of these models on a large retrospective cohort.

Methods: This is a retrospective cohort study including hospitalized patients with positive urine cultures in the first 48 hours of hospitalization at a 1500 bed, tertiary care hospital over a 4.5 year period. All first urine cultures with susceptibilities were included. Statistical learning techniques, including penalized logistic regression, were used to create predictive models for cefazolin, ceftriaxone, ciprofloxacin, cefepime, and piperacillin-tazobactam. These were validated on a held-out cohort.

Results: The final dataset used for analysis included 6,366 patients. Final model covariates included demographics, comorbidity score, recent antibiotic use, recent antimicrobial resistance, and antibiotic allergies. Models had acceptable to good discrimination in the training dataset and acceptable performance in the validation dataset, with a point estimate for area under the receiver operating characteristic curve (AUC) that ranged from 0.65 for ceftriaxone to 0.69 for cefazolin. All models had excellent calibration.

Conclusion: In this study we used electronic health record data to create predictive models to estimate antibiotic susceptibilities for UTIs in hospitalized patients. Our models had acceptable performance in a held-out validation cohort.

Florfenicol belongs to a class of phenicol antimicrobials widely used as feed additives and for the treatment of respiratory infections. In recent years, increasing resistance to florfenicol has been reported in Campylobacter spp., the leading foodborne enteric pathogen causing diarrheal diseases worldwide. Here, we reported the identification of fexA, a novel mobile florfenicol resistance gene in Campylobacter. Of the 100 Campylobacter jejuni strains isolated from poultry in Zhejiang, China, nine of them were shown to be fexA positive, and their whole genome sequences were further determined by integration of Illumina short-read and MinION long-read sequencing. The fexA gene was found in the plasmid of one strain and chromosomes of eight strains, and its location was verified by S1 nuclease pulsed-field gel electrophoresis (S1-PFGE) and Southern blotting. Based on comparative analysis, the fexA gene was located within a region with the tet(L)-fexA-catA-tet(O) gene arrangement, demonstrated to be successfully transferrable among C. jejuni strains. Functional cloning indicated that acquisition of the single fexA gene significantly increased resistance to florfenicol, whereas its inactivation resulted in increased susceptibility to florfenicol in Campylobacter. Taken together, these results indicated that the emerging fexA resistance is horizontally transferable, which might greatly facilitate the adaptation of Campylobacter in food producing environments where florfenicols are frequently used.

BACKGROUND:

Orphan drug development is crucial for children, who are disproportionately affected by rare diseases. Data are lacking on the number, nature, and benefit of recently approved pediatric orphan indications.

BACKGROUND:

For children who cannot be discharged from the emergency department, definitive care has become less frequent at most hospitals. It is uncertain whether this is true for common conditions that do not require specialty care. We sought to determine how the likelihood of definitive care has changed for 3 common pediatric conditions: asthma, croup, and gastroenteritis.

BACKGROUND:

Mexican-origin women breastfeed at similar rates as white women in the United States, yet they usually breastfeed for less time. In our study, we seek to identify differences in Mexican-origin women’s breastfeeding intentions, initiation, continuation, and supplementation across nativity and country-of-education groups.

BACKGROUND AND OBJECTIVES:

Children with medical complexity (CMC) comprise only 6% of the pediatric population, account for ~40% of pediatric health care spending, and provide an important opportunity for cost saving. Savings in this group can have an important impact on pediatric health care costs. The objective of this study was to assess the impact of a multicenter care management program on spending and use in CMC.

BACKGROUND:

Congenital diaphragmatic hernia (CDH) is a rare congenital anomaly with a mortality of ~27%. The Congenital Diaphragmatic Hernia Study Group (CDHSG) developed a simple postnatal clinical prediction rule to predict mortality in newborns with CDH. Our aim for this study is to externally validate the CDHSG rule in the European population and to improve its prediction of mortality by adding prenatal variables.

BACKGROUND:

Elevated non–high-density lipoprotein cholesterol (HDL-C) levels are used to identify children at increased cardiovascular risk, but the use of non–HDL-C in childhood to predict atherosclerosis is unclear. We examined whether the National Heart, Lung, and Blood Institute classification of youth non–HDL-C status predicts high common carotid artery intima-media thickness in adulthood.

BACKGROUND AND OBJECTIVES:

Children born very preterm (VPT) are at high risk of cognitive impairment that impacts their educational and social opportunities. This study examined the predictive accuracy of assessments at 2, 4, 6, and 9 years in identifying preterm children with cognitive impairment by 12 years.

BACKGROUND:

Current guidelines from the American Academy of Pediatrics recommend screening children for developmental problems by using a standardized screening tool and referring at-risk patients to early intervention (EI) or subspecialists. Adoption of guidelines has been gradual, with research showing many children still not being screened and referred.

BACKGROUND:

Pediatricians are less frequently sued than other physicians. When suits are successful, however, the average payout is higher. Little is known about changes in the risk of litigation over time. We sought to characterize malpractice lawsuit trends for pediatricians over time.

Penn State Health has appointed Don McKenna as president of Penn State Health Hampden Medical Center.

Penn State Health Milton S. Hershey Medical Center has begun enrolling participants in an international clinical trial evaluating an investigational antiviral drug, remdesivir, for treatment of coronavirus disease 2019 (COVID-19).

Are you unhappy with your credit provider? Have you been given more debt than you can afford to pay back? Help is at hand, and it’s just an SMS away.

Credit card fraud increased to 19.47% as at the end of March 2019, compared to 12.2% reported at the beginning of January 2019.

With credit card fraud rising at an alarming rate in the first quarter of the year, the Ombudsman for Banking Services has provided 10 tips to avoid becoming a victim of scammers.

Ana L. Creo
Dec 1, 2017; 140:e20171486-e20171486
STATE-OF-THE-ART REVIEW ARTICLES

Andrea T. Cruz
Apr 8, 2020; 0:peds.2020-0834v2-e20200834
COMMENTARY

The coronavirus closures are shaping a disruptive end to a tumultuous academic career for the Class of 2020.

Wine, fish, and excessive use of social media were a few of the topics that earned students top honors in Penn State Hazleton's first-ever virtual Undergraduate Research Fair.

It is crucial that all children are provided with high-quality and safe health care. Pediatric inpatient needs are unique in regard to policies, equipment, facilities, and personnel. The intent of this clinical report is to provide recommendations for the resources necessary to provide high-quality and safe pediatric inpatient medical care.

That free Echo Dot will let you launch apps, search for titles, and switch inputs on your TV with just your voice.

The Netgear Nighthawk AX4 Wi-Fi 6 router is $100 off, the Dell XPS 8930 Special Edition gaming desktop is $250 off, and Amazon is offering up to 40 percent off Eufy robot vacuums.

Katherine H. Burns
Oct 1, 2010; 126:638-646
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Paul L. Aronson
Oct 1, 2014; 134:667-677
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Maureen Hack
Aug 1, 2005; 116:333-341
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Andrew T. Shennan
Oct 1, 1988; 82:527-532
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Vinod K. Bhutani
Jan 1, 1999; 103:6-14
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Marcia E. Herman-Giddens
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Like other Americans, liberal and conservative teachers perceive news sources' credibility differently. How does that affect their teaching of media literacy?

The Epson WorkForce ES-500WR delivers fast and accurate scans paired with a robust software package that will appeal to data-crunching offices.

Penn State Brandywine is offering a complimentary virtual seminar on Practical Social Media Tactics for the Busy Entrepreneur from 11:30 a.m. to 1:30 p.m. May 18, through Zoom video conferencing.

Payback

People find it convenient to use Facebook or other social media accounts to sign up for most new apps and services, but they prefer to use their e-mail address or open a new account if they feel the information in the app is too sensitive, according to a team of researchers.

Entries from two Penn State students were among winners in categories for professional television journalists as part of the Keystone Media Awards.

Penn State Health has opened two regional clinics to care for patients with confirmed or suspected COVID-19 who have health care needs that are serious enough to warrant a face-to-face appointment.

The staff of Hershey Medical Center is one of only several academic hospitals in the country with specialized infrastructure and and training geared around offering care during a contagion outbreak. But they have another advantage, too. “We are all a family,” says one doctor. “And we look out for one another.”

The spring season at Penn State College of Medicine is packed full of research presentations, awards and ceremonies. Since experts cannot predict when social distancing guidelines will be relaxed, College of Medicine leaders plan on celebrating many of these springtime celebrations virtually — including commencement.

Reports of suspected child abuse have declined in Pennsylvania since the onset of social distancing guidelines. But experts in the Penn State Center for the Protection of Children say this does not correlate with an actual decline in abuse cases.

No matter your age, the Amazon Kindle Kids Edition is a terrific value for anyone looking to buy an ebook reader.

Portgual's A Bola gave every player ten out of ten, L'Équipe were "devasted" and Cristiano Ronaldo was naturally a focus: we round up the world media reaction to the final.

Accreditation process starts on 1 June 2013

Atlético ended Real Madrid's four-game UEFA Super Cup winning streak in Tallinn, and maintained their 100% record in the competition.

2019 is nearly over, so let's look ahead to what awaits the video game industry in the first year of the new decade. Informed opinions and hot takes abound.

The price is right and the feature set is enticing, but the Anker Nebula Soundbar Fire TV Edition provides only modest sonic returns.

Too many districts that use a lot of credit recovery to enable students to finish high school don't have sufficient policy safeguards to ensure that those catch-up courses are high quality, according to a new report.

Successful intervention for inborn errors of metabolism (IEMs) is a triumph of modern medicine. For many of these conditions, medical foods are the cornerstone of therapy and the only effective interventions preventing disability or death. Medical foods are designed for patients with limited or impaired capacity to ingest, digest, absorb, or metabolize ordinary foods or nutrients, whereby dietary management cannot be achieved by modification of the normal diet alone. In the United States today, access to medical foods is not ensured for many individuals who are affected despite their proven efficacy in the treatment of IEMs, their universal use as the mainstay of IEM management, the endorsement of their use by professional medical organizations, and the obvious desire of families for effective care. Medical foods are not sufficiently covered by many health insurance plans in the United States and, without insurance coverage, many families cannot afford their high cost. In this review, we outline the history of medical foods, define their medical necessity, discuss the barriers to access and reimbursement resulting from the regulatory status of medical foods, and summarize previous efforts to improve access. The Advisory Committee on Heritable Disorders in Newborns and Children asserts that it is time to provide stable and affordable access to the effective management required for optimal outcomes through the life span of patients affected with IEMs. Medical foods as defined by the US Food and Drug Administration should be covered as required medical benefits for persons of all ages diagnosed with an IEM.