Identification of plasmids in avian-associated Escherichia coli using nanopore and illumina sequencing.

BACKGROUND: Avian pathogenic Escherichia coli (APEC) are the causative agents of colibacillosis in chickens, a disease which has significant economic impact on the poultry industry. Large plasmids detected in APEC are known to contribute to strain diversity for pathogenicity and antimicrobial resistance, but there could be other plasmids that are missed in standard analysis. In this study, we determined the impact of sequencing and assembly factors for the detection of plasmids in an E. coli whole genome sequencing project. RESULTS: Hybrid assembly (Illumina and Nanopore) combined with plasmid DNA extractions allowed for detection of the greatest number of plasmids in E. coli, as detected by MOB-suite software. In total, 79 plasmids were identified in 19 E. coli isolates. Hybrid assemblies were robust and consistent in quality regardless of sequencing kit used or if long reads were filtered or not. In contrast, long read only assemblies were more variable and influenced by sequencing and assembly parameters. Plasmid DNA extractions allowed for the detection of physically smaller plasmids, but when averaged over 19 isolates did not significantly change the overall number of plasmids detected. CONCLUSIONS: Hybrid assembly can be reliably used to detect plasmids in E. coli, especially if researchers are focused on large plasmids containing antimicrobial resistance genes and virulence factors. If the goal is comprehensive detection of all plasmids, particularly if smaller sized vectors are desired for biotechnology applications, the addition of plasmid DNA extractions to hybrid assemblies is prudent. Long read sequencing is sufficient to detect many plasmids in E. coli, however, it is more prone to errors when expanded to analyze a large number of isolates.

The influence of weather on the population dynamics of common mosquito vector species in the Canadian Prairies.

BACKGROUND: Mosquito seasonal activity is largely driven by weather conditions, most notably temperature, precipitation, and relative humidity. The extent by which these weather variables influence activity is intertwined with the animal's biology and may differ by species. For mosquito vectors, changes in weather can also alter host-pathogen interactions thereby increasing or decreasing the burden of disease. METHODS: In this study, we performed weekly mosquito surveillance throughout the active season over a 2-year period in Manitoba, Canada. We then used Generalized Linear Mixed Models (GLMMs) to explore the relationships between weather variables over the preceding 2 weeks and mosquito trap counts for four of the most prevalent vector species in this region: Oc. dorsalis, Ae. vexans, Cx. tarsalis, and Cq. perturbans. RESULTS: More than 265,000 mosquitoes were collected from 17 sampling sites throughout Manitoba in 2020 and 2021, with Ae. vexans the most commonly collected species followed by Cx. tarsalis. Aedes vexans favored high humidity, intermediate degree days, and low precipitation. Coquillettidia perturbans and Oc. dorsalis activity increased with high humidity and high rainfall, respectively. Culex tarsalis favored high degree days, with the relationship between number of mosquitoes captured and precipitation showing contrasting patterns between years. Minimum trapping temperature only impacted Ae. vexans and Cq. perturbans trap counts. CONCLUSIONS: The activity of all four mosquito vectors was affected by weather conditions recorded in the 2 weeks prior to trapping, with each species favoring different conditions. Although some research has been done to explore the relationships between temperature/precipitation and Cx. tarsalis in the Canadian Prairies, to our knowledge this is the first study to investigate other commonly found vector species in this region. Overall, this study highlights how varying weather conditions can impact mosquito activity and in turn species-specific vector potential.

Occupational Therapy: An Essential Component of Support for Young Children With Cancer.

We established a multidisciplinary early childhood clinic to support infants and toddlers receiving cancer treatment. The access to occupational therapy (OT) in this population is unknown. To describe the access to OT for infants and toddlers with cancer. We retrospectively reviewed medical records to determine the frequency and characteristics of children with cancer who were referred to OT. Demographic data, medical information, and frequency of referrals were extracted from September 2015 to September 2018. Of the 134 patients, 112 (83.6%) received an OT evaluation: 88.4% were referred for hospital-based OT services; 42.0% were recommended for services upon returning home. Between-group comparisons revealed significant differences in referrals for home- or community-based OT services based on age and disease. OT is crucial to treatment plans that address the developmental needs of young pediatric oncology patients during hospitalization and thereafter. Recommendations for monitoring this vulnerable population are provided.

Handedness switching as a presenting sign for pediatric low-grade gliomas: An insight into brain plasticity from a short case series.

PURPOSE: To describe clinical data, rehabilitation services, and outcomes of children with handedness switching as their presenting symptom before low-grade glioma (LGG) diagnosis. METHODS: A retrospective chart review was performed for five patients (four female and four white) with LGG and confirmed handedness switching before LGG diagnosis. RESULTS: All children were less than 8 years at diagnosis, and two patients were less than 3 years. All children were initially right-handed and experienced loss of motor function, ranging from weakness to paresis, in their dominant hand. The median time from switching handedness to diagnosis was 1 month (range: 0.75-60 months). Rehabilitation was offered for three patients, and motor function deficits in the initial dominant hand were resolved in two of the total cohort. At long-term follow-up, hand dominance returned to the initial hand in three patients. CONCLUSIONS: Handedness switching should be acknowledged as a potential sign of LGG in children, and early long-term rehabilitation services should be offered for these children.

Cancer Rehabilitation in the Pediatric and Adolescent/Young Adult Population.

OBJECTIVES: To identify body impairments, activity limitations, and participation restrictions in children, adolescents, and young adults with cancer amenable to rehabilitation, and provide the recommended screening, assessment and rehabilitation referral information for the health care community. DATA SOURCES: A review of the rehabilitation and pediatric oncology literature regarding functional impairments in combination with clinical expertise from practicing pediatric oncology rehabilitation therapists. CONCLUSION: Rehabilitation intervention has great potential to mitigate the impact of cancer and its treatment and may even have a role in reducing morbidity and mortality. All health care providers have a role in optimizing the function and quality of life in the pediatric cancer population. IMPLICATIONS FOR NURSING PRACTICE: It is imperative for nurses to utilize subjective and clinical screening to identify persons appropriate for rehabilitation referral, collaborate with the rehabilitation team, and support the patients and families in adhering to rehabilitation recommendations.

Constraint-Induced Movement Therapy for Children With Brain Tumors.

PURPOSE: The purpose of this pilot study was to investigate the feasibility of a 3-week constraint-induced movement therapy program in children with brain tumors and upper extremity hemiplegia and to describe resultant change in extremity use. METHODS: Affected arm use, health-related quality of life, and parent-reported feasibility of program participation were measured before and after the intervention and at a 3-month follow-up visit. RESULTS: All 9 participants completed the entire study. The quality and amount of affected arm use improved significantly; gains were maintained at the 3-month follow-up evaluation. Some parents (44%) reported that program participation was difficult; however, all reported satisfaction with the program. Participants did not experience negative changes in health-related quality of life during the intervention, indicating that they tolerated the program well. CONCLUSIONS: Findings suggest that a child with hemiplegia as a result of a brain tumor can adhere to and benefit from a constraint-induced movement therapy program.

Participation in an occupational therapy referral program for children with retinoblastoma.

PURPOSE: Because retinoblastoma typically arises at a very young age, children are particularly vulnerable to vision impairment, associated developmental delays, and functional limitations. Limited information is available describing developmental delay and functional limitations in this population, necessitating supportive services including rehabilitation. The aims of this study were to describe the participation of children with newly diagnosed retinoblastoma in an occupational therapy program that identifies children in need of rehabilitation services. We also identify indications for referral to rehabilitation services among children with newly diagnosed retinoblastoma and enumerate the likelihood of these children receiving the recommended services. METHODS: Twenty-two children participated in longitudinal occupational therapy assessments during the first year after diagnosis. RESULTS: We recommended 1 or more types of rehabilitation services for 16 of 22 (72.7%) participants. Twelve of 16 (75%) received services. CONCLUSIONS: The results of this pilot study indicate that implementing a prospective occupational therapy-screening program is feasible and results in identification and initiation of therapy services in some children with retinoblastoma. Developmental screenings and follow-up of children with retinoblastoma is strongly recommended.