Coronavirus Disease 2019 (COVID-19) Outbreak Associated With Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) P.1 Lineage in a Long-Term Care Home After Implementation of a Vaccination Program-Ontario, Canada, April-May 2021.

In a P.1 coronavirus disease 2019 (COVID-19) outbreak in a long-term care home, vaccine effectiveness against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection was 52.5% (95% confidence interval: 26.9%-69.1%) in residents and 66.2% (2.3%-88.3%) in staff. Vaccine effectiveness against severe illness was 78.6% (47.9%-91.2%) in residents. Two of 19 vaccinated resident case patients died. Outbreak management required both vaccination and infection control measures.

Front-line ownership: generating a cure mindset for patient safety.

Great advances have been made in standardization and human factors engineering that have reduced variability and increased reliability in healthcare. As important as these advances are, the authors believe there is another important but largely ignored layer to the safety story in healthcare that has prevented us from progressing. In the field of infection prevention and control (IPAC), despite great attempts over several decades to improve compliance with hand hygiene, surveillance, environmental cleaning, isolation protocols and other control measures, very significant challenges remain. We believe this failure is in part due to the power gradients, often dysfunctional relationships and lack of safety mindfulness that exist in hospitals and healthcare more generally. Furthermore, safety culture requires different approaches and considerable ongoing attentiveness. If this is the case, and the authors contend in this paper that it is, then the role of the front line is much more important than many of our healthcare safety and IPAC approaches suggest.

Healthcare-associated infections: new initiatives and continuing challenges.

Healthcare-associated infections are a major cause of patient morbidity and mortality. Fortunately for patients and the healthcare system, there is increasing interest in this field and the growing realization that many of these infections are highly preventable. We explore some of the newer and more promising strategies for decreasing infections, including the use of practice bundles, behavioural change strategies, hand hygiene auditing, public reporting of infection rates and antimicrobial stewardship. We also identify several areas where improvement is needed, including empowering patients to prevent infections, building safer healthcare facilities and accepting the limitations of the evidence supporting some infection control interventions.

Transmission of influenza A in human beings.

Planning for the next influenza pandemic is occurring at many levels throughout the world, spurred on by the recent spread of H5N1 avian influenza in Asia, Europe, and Africa. Central to these planning efforts in the health-care sector are strategies to minimise the transmission of influenza to health-care workers and patients. The infection control precautions necessary to prevent airborne, droplet, and contact transmission are quite different and will need to be decided on and planned before a pandemic occurs. Despite vast clinical experience in human beings, there continues to be much debate about how influenza is transmitted. We have done a systematic review of the English language experimental and epidemiological literature on this subject to better inform infection control planning efforts. We have found that the existing data are limited with respect to the identification of specific modes of transmission in the natural setting. However, we are able to conclude that transmission occurs at close range rather than over long distances, suggesting that airborne transmission, as traditionally defined, is unlikely to be of significance in most clinical settings. Further research is required to better define conditions under which the influenza virus may transmit via the airborne route.

Five years of Experience using Front-Line Ownership to Improve Healthcare Quality and Safety.

Front-line ownership (FLO) is a complexity science-based approach to leading change initiatives that is built upon a foundation of Positive Deviance and the use of Liberating Structures to engage others. In this paper, we outline the use of FLO in four successful patient safety or quality improvement projects in four countries. While the underlying principles guiding the use of FLO were the same for each of these projects, project goals, the types of roles involved and how the projects evolved, spread and were sustained, varied considerably between settings. Allowing for local variability while following consistent overarching simple rules is central to the FLO approach and we believe the key reason why it has met with success. While many parts of healthcare delivery require increased standardization, approaches that allow teams to develop implementation strategies based on their unique local situations, will likely meet with greater success than those that attempt to standardize implementation in addition to practice.

Healthcare Quality Improvement Requires Many Approaches.

It is a pleasure to respond to the commentaries and we thank the authors for the thought, time and effort they so obviously put into their writing. We are excited that documenting our experience has resulted in such a wide range of opinion.

Tolerability of the Intergroup 0099 (INT 0099) regimen in locally advanced nasopharyngeal cancer with a focus on patients' nutritional status.

PURPOSE: The Intergroup 0099 trial (INT 0099) for locally advanced nasopharyngeal cancer (NPC) has set a standard of practice. This retrospective review documents our institutional experience with this regimen. METHODS AND MATERIALS: For all NPC patients treated between January 1998 and December 2002 with the INT 0099 regimen, compliance, toxicity, weight change, and feeding tube use were recorded. Patients were grouped by therapy completion status and by feeding tube status. RESULTS: Of 78 consecutive patients, 75 were evaluable. Compliance with radiotherapy was excellent. Only 43% and 61% of patients received all cycles of concurrent and adjuvant chemotherapy, respectively. Patients who successfully completed therapy had a higher average baseline weight and were more likely to have had a prophylactic feeding tube. Forty of 75 patients had a feeding tube inserted and were analyzed as two groups. Patients with prophylactic insertion (n = 23) had a more gradual drop in weight, and recovered to a greater degree at 1 year (93.6% vs. 87.2%), than those with a feeding tube inserted therapeutically during treatment (n = 17). CONCLUSIONS: The INT 0099 regimen was generally delivered with modifications to the chemotherapy component, as in the original trial. The prophylactic insertion of a feeding tube may facilitate therapy completion and weight recovery in some patients.

Limitation of conventional two dimensional radiation therapy planning in nasopharyngeal carcinoma.

PURPOSE: To assess the adequacy of coverage of gross tumor volume (GTV) with traditional two dimensional (2D) radiation therapy (RT) planning in patients with nasopharyngeal cancer (NPC). MATERIALS AND METHODS: The study comprised 94 of 179 patients treated with definitive RT between 1993 and 1997. The inclusion requirement was the availability of a digitally archived pretreatment magnetic resonance imaging. The digital images were used to record the precise location of the GTV in the sagittal plane. As a separate procedure, sagittal dose distributions for each treatment phase were created by digitizing the simulation field parameters into treatment planning software without knowledge of the GTV. The location of the GTV and dose distribution in the sagittal plane were superimposed on each other and GTV coverage by the 50, 90 and 95% isodose lines determined for each phase of treatment. RESULTS: The 1997 tumour node metastasis (TNM) stage distribution was: 7 (8%) stage I, 16 (16%) stage II, 30 (32%) stage III and 41 (44%) stage IV. Median follow-up was 4.4 years. Median primary dose was 66 Gy. The actuarial 5-year overall survival, disease free survival and local relapse free rates were 88, 54 and 66%, respectively. The GTV was covered by the 50, 90 and 95% isodose lines for all phases of the multiphase plan in only 53, 20 and 9% of patients, respectively. The GTV was more likely to be undercovered in the latter phases of the plan particularly in those patients with advanced T category. CONCLUSION: 2D RT planning has significant limitations in achieving adequate GTV coverage in NPC. We strongly recommend 3D planning using either conformal techniques of dose delivery or intensity modulated radiation therapy for the treatment of these patients.

Fertility among female hodgkin lymphoma survivors attempting pregnancy following ABVD chemotherapy.

Although ABVD (doxorubicin, bleomycin, vinblastine, dacarbazine) chemotherapy is infrequently associated with premature amenorrhea, little is known about the success rate of women attempting pregnancy following ABVD. In the present study females treated for HL with ABVD chemotherapy without pelvic radiation therapy (RT) and who were alive without relapse > or =3 years after treatment were identified from a clinical database and screened for inclusion. Using a standardized questionnaire, we determined the pregnancy rate (i.e. time-to-pregnancy, TTP) among survivors who had become pregnant, tried to become pregnant, or who had been sexually active for over 2 months without using contraception at any time following ABVD. The cumulative incidence of pregnancy was calculated using the Kaplan-Meier method. Cox proportional hazards models were constructed to compare the pregnancy rate among HL survivors to that reported by friend or sibling controls. Thirty-six female HL survivors, who had attempted pregnancy after ABVD treatment, and 29 controls, completed the survey. Eighteen patients (50%) received 2-4 cycles of ABVD, 16 (44%) received 4-6 cycles, and 2 (6%) received >6 cycles. The median TTP among both HL survivors and controls was 2.0 months. The 12-month pregnancy rates were 70% and 75%, respectively. The fertility ratio (FR) for HL survivors versus controls was 0.94 (95%CI = 0.53-1.66; p = 0.84) after adjusting for age and frequency of intercourse (where FR < 1 indicates subfertility). Age at treatment and the number of cycles of chemotherapy were not associated with pregnancy rate among HL survivors. Female HL patients who had survived without recurrence > or =3 years and who had attempted pregnancy after ABVD did not experience significant sub-fertility.