Visits to Alberta Emergency Departments for Child Mental Health Concerns During the COVID-19 Pandemic: An Examination of Visit Trends in Relation to School Closures and Reopenings.

OBJECTIVE: We examined emergency department (ED) mental health visit trends by children in relation to periods of school closure and reopening during the COVID-19 pandemic in Alberta, Canada. METHODS: Mental health visits by school-aged children (5 to <18 years) were extracted from the Emergency Department Information System, a province-wide database, from March 11, 2020, to November 30, 2021 (pandemic period; n = 18,997) and March 1, 2019, to March 10, 2020 (1-year, prepandemic comparator period; n = 11,540). We calculated age-specific visit rates and compared rate differences between periods of school closure (March 15-June 30, 2020; November 30, 2020-January 10, 2021; April 22-June 30, 2021) and reopening (September 4-November 29, 2020; January 11-April 21, 2021; September 3-November 30, 2021) to matched prepandemic periods. We used a ratio of relative risk to examine the risk of a visit during closures versus reopenings. RESULTS: The cohort included 11,540 prepandemic visits and 18,997 pandemic visits. Compared with prepandemic periods, ED visit rates increased across all ages during the first (+85.53%; 95% confidence interval [CI], 73.68% to 100.41%) and third (+19.92%; 95% CI, 13.28% to 26.95%) school closures, and decreased during the second closure (-15.37%; 95% CI, -22.22% to -7.92%). During school reopenings, visit rates decreased across all ages during the first reopening (-9.30%; 95% CI, -13.94% to -4.41%) and increased during the third reopening (+13.59%; 95% CI, 8.13% to 19.34%); rates did not change significantly during the second reopening (2.54%; 95% CI, -3.45% to 8.90%). The risk of a visit during school closure versus reopening was only higher for the first closure with 2.06 times the risk (95% CI, 1.88 to 2.25). CONCLUSIONS: Emergency department mental health visit rates were highest during the first school closure of the COVID-19 pandemic, and the risk of a visit during this closure period was twice compared with when schools first reopened.

Association of COVID-19 Government-Instituted Mask Mandates With Incidence of Mask Use Among Children in Alberta, Canada.

Importance: To help prevent the spread of SARS-CoV-2, government-instituted nonpharmaceutical interventions (eg, social distancing, mask use, isolating), a provincewide government-instituted mask mandate occurred on December 8, 2020, in Alberta, Canada, although some local jurisdictions implemented an earlier mask mandate. There remains a limited understanding of the association between government-implemented public health measures and individual health behaviors of children. Objective: To examine the association between government mask mandates and mask use among children in Alberta, Canada. Design, Setting, and Participants: A cohort of children from Alberta, Canada, was recruited to examine longitudinal SARS-CoV-2 serologic factors. Parents were prospectively asked about their child's mask use in public places every 3 months (5-point Likert scale: never to always) from August 14, 2020, to June 24, 2022. A multivariable logistic generalized estimating equation was used to examine government mandatory masking mandates and child mask use. Child mask use was operationalized into a single composite dichotomous outcome by grouping parents who reported their child often or always wore a mask vs those who reported their child never, rarely, or occasionally wore a mask. Exposures: The primary exposure variable was the government masking mandate (began on different dates in 2020). The secondary exposure variable was government private indoor and outdoor gathering restrictions. Main Outcomes and Measures: The primary outcome was parent report of child mask use. Results: A total of 939 children participated (467 female [49.7%]; mean [SD] age, 10.61 [1.6] years). The odds of parents' report of child mask use (often or always) was 18.3 times higher (95% CI, 5.7-58.6; P < .001; risk ratio, 1.7; 95% CI, 1.5-1.8; P < .001) with the mask mandate on compared with the mask mandate off. There was no significant change in mask use over the course of the mask mandate due to time. In contrast, each day with the mask mandate off was associated with a 1.6% decrease in mask use (odds ratio, 0.98; 95% CI, 0.98-0.99; P < .001). Conclusions and Relevance: The results of this study suggest that government-mandated mask use and providing the public with up-to-date health information (eg, case counts) is associated with increased parent-reported child mask use, while increasing time without a mask mandate is associated with decreased mask use.

Healthcare utilization and adverse outcomes stratified by sex, age and long-term care residency using the Alberta COVID-19 Analytics and Research Database (ACARD): a population-based descriptive study.

BACKGROUND: Understanding the epidemiology of Coronavirus Disease of 2019 (COVID-19) in a local context is valuable for both future pandemic preparedness and potential increases in COVID-19 case volume, particularly due to variant strains. METHODS: Our work allowed us to complete a population-based study on patients who tested positive for COVID-19 in Alberta from March 1, 2020 to December 15, 2021. We completed a multi-centre, retrospective population-based descriptive study using secondary data sources in Alberta, Canada. We identified all adult patients (≥ 18 years of age) tested and subsequently positive for COVID-19 (including only the first incident case of COVID-19) on a laboratory test. We determined positive COVID-19 tests, gender, age, comorbidities, residency in a long-term care (LTC) facility, time to hospitalization, length of stay (LOS) in hospital, and mortality. Patients were followed for 60 days from a COVID-19 positive test. RESULTS: Between March 1, 2020 and December 15, 2021, 255,037 adults were identified with COVID-19 in Alberta. Most confirmed cases occurred among those less than 60 years of age (84.3%); however, most deaths (89.3%) occurred among those older than 60 years. Overall hospitalization rate among those who tested positive was 5.9%. Being a resident of LTC was associated with substantial mortality of 24.6% within 60 days of a positive COVID-19 test. The most common comorbidity among those with COVID-19 was depression. Across all patients 17.3% of males and 18.6% of females had an unplanned ambulatory visit subsequent to their positive COVID-19 test. CONCLUSIONS: COVID-19 is associated with extensive healthcare utilization. Residents of LTC were substantially impacted during the COVID-19 pandemic with high associated mortality. Further work should be done to better understand the economic burden associated with related healthcare utilization following a COVID-19 infection to inform healthcare system resource allocation, planning, and forecasting.

Impact of the COVID-19 pandemic on Muslim older immigrants in Edmonton, Alberta: A community-based participatory research project with a local mosque.

OBJECTIVE: Older Muslim immigrants experience multiple vulnerabilities living in Canada. This study explores the experiences of Muslim older adults during the COVID-19 pandemic to identify ways to build community resilience as part of a community-based participatory research partnership with a mosque in Edmonton, Alberta. METHODS: Using a mixed-methods approach, check-in surveys (n = 88) followed by semi-structured interviews (n = 16) were conducted to assess the impact of COVID-19 on older adults from the mosque congregation. Quantitative findings were reported through descriptive statistics, and thematic analysis guided the identification of key findings from the interviews using the socio-ecological model. RESULTS: Three major themes were identified in consultation with a Muslim community advisory committee: (a) triple jeopardy leading to loneliness, (b) decreased access to resources for connectivity, and (c) organizational struggles to provide support during the pandemic. The findings from the survey and interviews highlight various supports that were missing during the pandemic for this population. CONCLUSION: The COVID-19 pandemic exacerbated the challenges associated with aging in the Muslim population and contributed to further marginalization, with mosques being sites of support during times of crises. Policymakers and service providers must explore ways of engaging mosque-based support systems in meeting the needs of older Muslim adults during pandemics.

RéSUMé: OBJECTIF: Les immigrants musulmans âgés vivant au Canada sont confrontés à des vulnérabilités multiples. Cette étude explore les expériences des personnes âgées musulmanes durant la pandémie de COVID-19 afin d'identifier des moyens pour renforcer la résilience communautaire dans le cadre d'un partenariat de recherche participative communautaire (CBPR) avec une mosquée à Edmonton, en Alberta. MéTHODES: À l'aide d'une approche à méthodes mixtes, des enquêtes de contrôle (n = 88) suivies d'entretiens semi-dirigés (n = 16) ont été menés pour évaluer l'impact du COVID-19 sur les personnes âgées de la congrégation de la mosquée. Les résultats quantitatifs ont été rapportés au moyen de statistiques descriptives, tandis que l'analyse thématique a guidé l'identification des principaux résultats des entretiens à l'aide du modèle socio-écologique. RéSULTATS: Trois thèmes majeurs ont été identifiés en concertation avec un comité consultatif de la communauté musulmane : a) triple péril menant à la solitude, b) accès réduit aux ressources pour la connectivité, et c) luttes organisationnelles pour fournir un soutien pendant la pandémie. Les résultats de l'enquête et des entretiens mettent en évidence le manque d'aides diverses à cette population durant la pandémie. CONCLUSION: La pandémie de COVID-19 a exacerbé les défis associés au vieillissement de cette population et a contribué à une marginalisation supplémentaire, les mosquées étant des sites de soutien en temps de crise. Les décideurs politiques et les prestataires de services doivent explorer les moyens d'engager les systèmes d'aide basés dans les mosquées pour répondre aux besoins des adultes musulmans âgés pendant les pandémies.

A longitudinal seroepidemiology study to evaluate antibody response to SARS-CoV-2 virus infection and vaccination in children in Calgary, Canada from July 2020 to April 2022: Alberta COVID-19 Childhood Cohort (AB3C) Study.

BACKGROUND: Measurement of SARS-CoV-2 antibody seropositivity is important to accurately understand exposure to infection and/or vaccination in specific populations. This study aimed to estimate the serologic response to SARS-CoV-2 virus infection and vaccination in children in Calgary, Alberta over a two-year period. METHODS: Children with or without prior SARS-CoV-2 infections, were enrolled in Calgary, Canada in 2020. Venous blood was sampled 4 times from July 2020 to April 2022 for SARS-CoV-2 nucleocapsid and spike antibodies. Demographic and clinical information was obtained including SARS-CoV-2 testing results and vaccination records. RESULTS: 1035 children were enrolled and 88.9% completed all 4 visits; median age 9 years (IQR: 5,13); 519 (50.1%) female; and 815 (78.7%) Caucasian. Before enrolment, 118 (11.4%) had confirmed or probable SARS-CoV-2. By April 2022, 39.5% of previously uninfected participants had a SARS-CoV-2 infection. Nucleocapsid antibody seropositivity declined to 16.4% of all infected children after more than 200 days post diagnosis. Spike antibodies remained elevated in 93.6% of unvaccinated infected children after more than 200 days post diagnosis. By April 2022, 408 (95.6%) children 12 years and older had received 2 or more vaccine doses, and 241 (61.6%) 5 to 11 year-old children had received 2 vaccine doses. At that time, all 685 vaccinated children had spike antibodies, compared with 94/176 (53.4%) of unvaccinated children. CONCLUSIONS: In our population, after the first peak of Omicron variant infections and introduction of COVID-19 vaccines for children, all vaccinated children, but just over one-half of unvaccinated children, had SARS-CoV-2 spike antibodies indicating infection and/or vaccination, highlighting the benefit of vaccination. It is not yet known whether a high proportion of seropositivity at the present time predicts sustained population-level protection against future SARS-CoV-2 transmission, infection or severe COVID-19 outcomes in children.

Assessing the impact of COVID-19 pandemic on the health of residents and the healthcare system in Alberta, Canada: an observational study-The Alberta POST-COVID Follow-up Study.

INTRODUCTION: Very little is known about how the COVID-19 pandemic has affected the health of residents and the healthcare system in Alberta, Canada. The purpose of this study is to establish an observational study to characterise the health of residents in Alberta, Canada, over time, covering a population that tested negative or positive for COVID-19 during the pandemic. The primary outcome is to characterise 'long COVID-19' and the health status of residents during the COVID-19 pandemic. Secondary outcomes include the estimation of the risk of and risk factors associated with adverse health outcomes and healthcare utilisation and burdens. METHODS AND ANALYSIS: This is a population-level provincial observational study which will follow-up with Alberta residents who underwent testing for COVID-19 and completed surveys adapted from the ISARIC COVID-19 long-term follow-up survey. The survey data will be linked with medical records. Statistical analyses will be carried out to characterise 'long COVID-19' and the health status of residents during the pandemic. The outcomes of this study will inform strategies for primary care and rehabilitation services to prevent chronic consequences; contribute to healthcare management, interventional studies, rehabilitation and health management to reduce overall morbidity and improve long-term outcomes of COVID-19 and the COVID-19 pandemic and potentially guide a self-evaluation of a remote monitoring system to manage individuals' health. ETHICS AND DISSEMINATION: This study was reviewed and approved by the University of Alberta ethics committee (Study ID: Pro00112053 & Pro00113039) on 13 August 2021 and adheres to the Alberta Health Services research information management policy. Study results will be used to manage clinical care, published in peer-reviewed journals and presented at local, national and international conferences. PROTOCOL VERSION: 6 June 2022 EUROQOL ID: 161 015.

Well-being of professional older adults' caregivers in Alberta's assisted living and long-term care facilities: a cross-sectional study.

BACKGROUND: For the care need of older adults, long-term care (LTC) and assisted living (AL) facilities are expanding in Alberta, but little is known about the caregivers' well-being. The purpose of the study was to investigate the physical health conditions, mental and emotional health (MEH), health behaviour, stress levels, quality of life (QOL), and turnover and absenteeism (TAA) among professional caregivers in Alberta's LTC and AL facilities. METHODS: This cross-sectional survey involved 933 conveniently selected caregivers working in Alberta's LTC and AL facilities. Standardised questions were selected from the Canadian Community Health Survey, Patient Health Questionnaire-9, and Short Form-36 QOL survey revalidated and administered to the participants. The new questionnaire was used to assess the caregivers' general health condition (GHC), physical health, health behaviour, stress level, QOL, and TAA. Data were analysed using descriptive statistics, Cronbach alpha, Pearson's correlation, one-way analysis of variance, and multiple linear regression. RESULTS: Of 1385 surveys sent to 39 facilities, 933 valid responses were received (response rate = 67.4%). The majority of the caregivers were females (90.8%) who were ≥ 35 years (73.6%), worked between 20 to 40 h weekly (67.3%), and were satisfied with their GHC (68.1%). The Registered Nurses had better GHC (mean difference [MD] = 0.18, p = 0.004) and higher TAA than the Health Care Aides (MD = 0.24, p = 0.005). There were correlations between caregivers' TAA and each of MEH (r = 0.398), QOL (r = 0.308), and stress (r = 0.251); p < 0.001. The most significant predictors of TAA were the propensity to quit a workplace or the profession, illness, job stress, and work-related injury, F (5, 551) = 76.62, p < 0.001, adjusted R2 = 0.998. CONCLUSION: Reducing the caregivers' job stressors such as work overload, inflexible schedule, and poor remuneration, and improving their quality of life, health behaviour, and mental, emotional, and physical health conditions may increase their job satisfaction and reduce turnover and absenteeism.

Exploring the Alberta Health Services COVID-19 provincial public health integrated outbreak prevention, preparedness, management, and response interventions to support congregate and communal living sites in Alberta.

SETTING: On March 17, 2020, a state of public health emergency was declared in Alberta under the Public Health Act in response to the COVID-19 pandemic. Congregate and communal living sites were environments with a high risk of exposure to and transmission of COVID-19. Consequently, provincial efforts to prevent and manage COVID-19 were required and prioritized. INTERVENTION: During the first 9 months of the pandemic, vaccines were unavailable and alternate strategies were used to prevent and manage COVID-19 (e.g., physical distancing, masking, symptom screening, testing, isolating cases). Alberta Health Services worked with local, provincial, and First Nations and Inuit Health Branch stakeholders to deliver interventions to support congregate and communal living sites. Interventions included resources and site visits to support prevention and preparedness, and the creation of a coordinated response line to serve as a single point of contact to access information and services in the event of an outbreak (e.g., guidance, testing, personal protective equipment, reporting). OUTCOMES: Data from an internal monitoring dashboard informed intervention uptake and use. Online survey results found high levels of awareness, acceptability, appropriateness, and use of the interventions among congregate and communal living site administrators (n = 550). Recommendations were developed from reported experiences, challenges, and facilitators, and processes were improved. IMPLICATIONS: Provincially coordinated prevention, preparedness, and outbreak management interventions supported congregate and communal living sites. Efforts to further develop adaptive system-level approaches for prevention and preparedness, in addition to communication and information sharing in complex rapidly changing contexts, could benefit future public health emergencies.

RéSUMé: LIEU: Le 17 mars 2020, un état d'urgence sanitaire a été déclaré en Alberta en vertu de la Loi sur la santé publique pour riposter à la pandémie de COVID-19. Les habitations collectives étaient des environnements qui présentaient un risque élevé d'exposition à la COVID-19 et de transmission du virus. Des efforts provinciaux pour prévenir et gérer la COVID-19 ont donc été nécessaires et se sont vu accorder la priorité. INTERVENTION: Comme des vaccins n'étaient pas disponibles au cours des neuf premiers mois de la pandémie, d'autres stratégies ont été utilisées pour prévenir et gérer la COVID-19 (p. ex. distanciation physique, port du masque, dépistage des symptômes, tests, isolation des cas). Les Services de santé de l'Alberta ont travaillé avec les acteurs locaux et provinciaux et les fonctionnaires de la Direction générale de la santé des Premières nations et des Inuits pour mener des interventions à l'appui des habitations collectives. Ces interventions ont compris des ressources et des visites sur place pour appuyer la prévention et la préparation, et la création d'une ligne d'intervention coordonnée qui a servi de guichet unique d'accès à l'information et aux services en cas d'éclosion (p. ex. conseils, tests, équipement de protection individuelle, déclaration des cas). RéSULTATS: Les données d'un tableau de bord interne ont permis d'en savoir plus sur la popularité et l'utilisation de ces interventions. Les résultats d'un sondage en ligne ont fait état de niveaux élevés de connaissance, d'acceptabilité, de pertinence et d'utilisation des interventions chez les administrateurs d'habitations collectives (n = 550). Des recommandations ont été élaborées à partir des expériences signalées et des éléments positifs et négatifs, et les processus ont été améliorés. CONSéQUENCES: Des interventions de prévention, de préparation et de gestion des éclosions coordonnées à l'échelle provinciale ont soutenu les habitations collectives. Il pourrait être utile pour les futures urgences sanitaires de développer ces approches d'adaptation systémiques pour la prévention et la préparation, en plus des communications et de l'échange d'informations dans des contextes en évolution rapide.

Frequency and Type of Outpatient Visits for Patients With Cardiovascular Ambulatory-Care Sensitive Conditions During the COVID-19 Pandemic and Subsequent Outcomes: A Retrospective Cohort Study.

Background Because the impact of changes in how outpatient care was delivered during the COVID-19 pandemic is uncertain, we designed this study to examine the frequency and type of outpatient visits between March 1, 2019 to February 29, 2020 (prepandemic) and from March 1, 2020 to February 28, 2021 (pandemic) and specifically compared outcomes after virtual versus in-person outpatient visits during the pandemic. Methods and Results Population-based retrospective cohort study of all 3.8 million adults in Alberta, Canada. We examined all physician visits and 30- and 90-day outcomes, with a focus on those adults with the cardiovascular ambulatory-care sensitive conditions heart failure, hypertension, and diabetes. Our primary outcome was emergency department visit or hospitalization, evaluated using survival analysis accounting for competing risk of death. Although in-person outpatient visits decreased by 38.9% in the year after March 1, 2020 (10 142 184 versus 16 592 599 in the prior year), the introduction of virtual visits (7 152 147; 41.4% of total) meant that total outpatient visits increased by 4.1% in the first year of the pandemic for Albertan adults. Outpatient visit frequency (albeit 41.4% virtual, 58.6% in-person) and prescribing patterns were stable in the first year after pandemic onset for patients with the cardiovascular ambulatory-care sensitive conditions we examined, but laboratory test frequency declined by 20% (serum creatinine) to 47% (glycosylated hemoglobin). In the first year of the pandemic, virtual outpatient visits were associated with fewer subsequent emergency department visits or hospitalizations (compared with in-person visits) for patients with heart failure (adjusted hazard ratio [aHR], 0.90 [95% CI, 0.85-0.96] at 30 days and 0.96 [95% CI, 0.92-1.00] at 90 days), hypertension (aHR, 0.88 [95% CI, 0.85-0.91] and 0.93 [95% CI, 0.91-0.95] at 30 and 90 days), or diabetes (aHR, 0.90 [95% CI, 0.87-0.93] and 0.93 [95% CI, 0.91-0.95] at 30 and 90 days). Conclusions The adoption and rapid uptake of virtual outpatient care during the COVID-19 pandemic did not negatively impact frequency of follow-up, prescribing, or short-term outcomes, and could have potentially positively impacted some of these for adults with heart failure, diabetes, or hypertension in a setting where there was an active reimbursement policy for virtual visits. Given declines in laboratory monitoring and screening activities, further research is needed to evaluate whether long-term outcomes will differ.

The impact of delaying surgery during the COVID-19 pandemic in Alberta: a qualitative study.

BACKGROUND: The COVID-19 pandemic overwhelmed health care systems, leading many jurisdictions to reduce surgeries to create capacity (beds and staff) to care for the surge of patients with COVID-19; little is known about the impact of this on patients whose surgery was delayed. The objective of this study was to understand the patient and family/caregiver perspective of having a surgery delayed during the COVID-19 pandemic. METHODS: Using an interpretative descriptive approach, we conducted interviews between Sept. 20 and Oct. 8, 2021. Adult patients who had their surgery delayed or cancelled during the COVID-19 pandemic in Alberta, Canada, and their family/caregivers were eligible to participate. Trained interviewers conducted semistructured interviews, which were iteratively analyzed by 2 independent reviewers using an inductive approach to thematic content analysis. RESULTS: We conducted 16 interviews with 15 patients and 1 family member/caregiver, ranging from 27 to 75 years of age, with a variety of surgical procedures delayed. We identified 4 interconnected themes: individual-level impacts on physical and mental health, family and friends, work and quality of life; system-level factors related to health care resources, communication and perceived accountability within the system; unique issues related to COVID-19 (maintaining health and isolation); and uncertainty about health and timing of surgery. INTERPRETATION: Although the decision to delay nonurgent surgeries was made to manage the strain on health care systems, our study illustrates the consequences of these decisions, which were diffuse and consequential. The findings of this study highlight the need to develop and adopt strategies to mitigate the burden of waiting for surgery during and after the COVID-19 pandemic.

Exploration of inter-jurisdictional TB programming and mobility in a Canadian First Nation community.

BACKGROUND: Colonially imposed jurisdictional boundaries that have little meaning to Indigenous peoples in Canada may confound tuberculosis (TB) prevention and care activities. This study explores how inter-jurisdictional mobility and the current accommodation of mobility through policies and programming sustain a regional TB epidemic in northwestern Saskatchewan, and northeastern Alberta. METHODS: A qualitative instrumental case study was performed using a community based participatory approach. Semi-structured interviews were conducted with First Nations peoples from a high-incidence community in Canada including community-based healthcare workers. These interview data are presented in the context of a multi-level document analysis of TB program guidelines. RESULTS: The location of the community, and related lack of access to employment, services and care, necessitates mobility across jurisdictional boundaries. There are currently no formal federal or provincial guidelines in place to accommodate highly mobile patients and clients within and across provincial TB prevention and care programs. As a result, locally developed community-based protocols, and related ad-hoc strategies ensure continuity of care. CONCLUSION: Indigenous peoples living in remote communities face unique push/pull factors that motivate mobility. When these motivations exist in communities with increased risk of contagion by communicable infectious diseases such as TB, public health risks extend into increasingly large areas with competing jurisdictional authority. Such mobility poses several threats to TB elimination. We have identified a gap in TB services to systematically accommodate mobility, with specific implications for Indigenous peoples and reconciliation. We recommend clearly defined communication paths and inter-jurisdictional coordination to ensure maintenance of care for mobile populations.

Cross-Canada Variability in Blood Donor SARS-CoV-2 Seroprevalence by Social Determinants of Health.

We compared the seroprevalence of SARS-CoV-2 anti-nucleocapsid antibodies in blood donors across Canadian regions in 2021. The seroprevalence was the highest in Alberta and the Prairies, and it was so low in Atlantic Canada that few correlates were observed. Being male and of young age were predictive of seropositivity. Racialization was associated with higher seroprevalence in British Columbia and Ontario but not in Alberta and the Prairies. Living in a materially deprived neighborhood predicted higher seroprevalence, but it was more linear across quintiles in Alberta and the Prairies, whereas in British Columbia and Ontario, the most affluent 60% were similarly low and the most deprived 40% similarly elevated. Living in a more socially deprived neighborhood (more single individuals and one parent families) was associated with lower seroprevalence in British Columbia and Ontario but not in Alberta and the Prairies. These data show striking variability in SARS-CoV-2 seroprevalence across regions by social determinants of health. IMPORTANCE Canadian blood donors are a healthy adult population that shows clear disparities associated with racialization and material deprivation. This underscores the pervasiveness of the socioeconomic gradient on SARS-CoV-2 infections in Canada. We identify regional differences in the relationship between SARS-CoV-2 seroprevalence and social determinants of health. Cross-Canada studies, such as ours, are rare because health information is under provincial jurisdiction and is not available in sufficient detail in national data sets, whereas other national seroprevalence studies have insufficient sample sizes for regional comparisons. Ours is the largest seroprevalence study in Canada. An important strength of our study is the interpretation input from a public health team that represented multiple Canadian provinces. Our blood donor seroprevalence study has informed Canadian public health policy at national and provincial levels since the start of the SARS-CoV-2 pandemic.

Estimation of COVID-19 Period Prevalence and the Undiagnosed Population in Canadian Provinces: Model-Based Analysis.

BACKGROUND: The development of a successful COVID-19 control strategy requires a thorough understanding of the trends in geographic and demographic distributions of disease burden. In terms of the estimation of the population prevalence, this includes the crucial process of unravelling the number of patients who remain undiagnosed. OBJECTIVE: This study estimates the period prevalence of COVID-19 between March 1, 2020, and November 30, 2020, and the proportion of the infected population that remained undiagnosed in the Canadian provinces of Quebec, Ontario, Alberta, and British Columbia. METHODS: A model-based mathematical framework based on a disease progression and transmission model was developed to estimate the historical prevalence of COVID-19 using provincial-level statistics reporting seroprevalence, diagnoses, and deaths resulting from COVID-19. The framework was applied to three different age cohorts (< 30; 30-69; and ≥70 years) in each of the provinces studied. RESULTS: The estimates of COVID-19 period prevalence between March 1, 2020, and November 30, 2020, were 4.73% (95% CI 4.42%-4.99%) for Quebec, 2.88% (95% CI 2.75%-3.02%) for Ontario, 3.27% (95% CI 2.72%-3.70%) for Alberta, and 2.95% (95% CI 2.77%-3.15%) for British Columbia. Among the cohorts considered in this study, the estimated total number of infections ranged from 2-fold the number of diagnoses (among Quebecers, aged ≥70 years: 26,476/53,549, 49.44%) to 6-fold the number of diagnoses (among British Columbians aged ≥70 years: 3108/18,147, 17.12%). CONCLUSIONS: Our estimates indicate that a high proportion of the population infected between March 1 and November 30, 2020, remained undiagnosed. Knowledge of COVID-19 period prevalence and the undiagnosed population can provide vital evidence that policy makers can consider when planning COVID-19 control interventions and vaccination programs.

Impact of the COVID-19 Pandemic on Virtual Care: A Major Shift for Physicians and Patients.

To reduce the spread of COVID-19 in Canada, patients receiving physician services experienced a significant shift to virtual appointments by telephone, video conference and online messaging as many physician visits moved from in-person to virtual delivery. The Canadian Institute for Health Information's analysis of the physician billing data in five provinces (Ontario, Manitoba, Saskatchewan, Alberta and British Columbia) shows that during the first year of the pandemic in 2020, up to twice as many physicians provided care virtually compared to 2019. At the same time, the rate at which patients received virtual services quadrupled. Furthermore, data from the 2021 Commonwealth Fund (CMWF) survey of older adults show that almost twice as many Canadian seniors (71%) had a virtual appointment with a doctor or healthcare provider compared to seniors in other CMWF countries (39%). Going forward, virtual care remains a significant mode of delivery and has important implications for the future of patient care and the relationships between patients and providers.

The influence of place on COVID-19 vaccine coverage in Alberta: A multilevel analysis.

While there is evidence of urban/rural disparities in COVID-19 vaccination coverage, there is limited data on the influence of other place-based variables. In this cross-sectional study, we analyzed population-based linked administrative health data (publicly-funded health insurance database and province-wide immunization repository) to examine vaccination coverage for 3,945,103 residents aged 12 years and above in Alberta, Canada. We used multilevel logistic regression to examine the association of vaccination coverage with various place-based variables. Furthermore, we combined information on vaccine coverage and neighborhood level COVID-19 risk to categorize forward sortation areas (FSAs) into six categories. After 4 months of widely available COVID-19 vaccine, coverage varied widely between rural and urban areas (58% to 73%) and between geographic health authority zones (55.8% to 72.8%). Residents living in neighborhoods with lower COVID-19 disease incidence had the lowest vaccination coverage (63.2%), while coverage in higher incidence neighborhoods ranged from 68.3% to 71.9%. The multilevel logistic regression model indicated that residence in metro (adjusted odds ratio [aOR] 1.37; 95% CI: 1.31-1.42) and urban areas (aOR 1.11; 95% CI: 1.08-1.14) was associated with higher vaccine coverage than residence in rural areas. Similarly, residence in Edmonton, Calgary, and South health zones was associated with higher vaccine coverage compared to residence in Central zone. Higher income neighborhoods reported higher vaccine coverage than the lowest-income neighborhoods, and the highest COVID-19 risk neighborhoods reported higher vaccine coverage than the lowest risk neighborhoods (aOR 1.52; 95% CI: 1.12-2.05). In the first four months of wider vaccine availability in Alberta, COVID-19 vaccine coverage varied according to various place-based characteristics. Vaccine distribution strategies need to consider place-based variables for program prioritization and delivery.

Investigating the early impacts of the COVID-19 pandemic on modifiable risk factors for cancer and chronic disease: a repeated cross-sectional study in Alberta, Canada.

OBJECTIVES: This study contributes to empirical evidence by examining the impact of the first and second waves of the COVID-19 pandemic on modifiable risk factors (MRF) and whether these patterns differ according to level of material deprivation among people living in Alberta. METHODS: Using data from a repeated cross-sectional provincial health survey (Alberta Community Health Survey (ACHS): 2018-2021), we conducted logistic regression analyses examining the impacts of the COVID-19 pandemic on meeting national guidelines on four MRFs (tobacco use, physical activity, fruit and vegetable consumption, alcohol use) (n=11,249). We compared population-level changes in MRFs from one year before the COVID-19 pandemic (March 2019-February 2020) to one year during the pandemic (March 2020-February 2021) in Alberta. We also assessed whether these trends differed by a measure of material deprivation. RESULTS: Compared to the pre-COVID-19 period, the fully adjusted odds of meeting recommended guidelines for fruit and vegetable consumption (OR=0.42) decreased during the pandemic. Individuals experiencing high material deprivation had lower odds of meeting recommended guidelines for physical activity (OR=0.65) and higher odds of not being current tobacco users (OR=1.36) during the pandemic versus during the pre-pandemic period. CONCLUSION: At a population level, analyses from the ACHS showed minimal impacts of the first year of the COVID-19 pandemic on MRFs, besides fruit and vegetable consumption. Yet, stratifying results showed statistically significant differences in pandemic impacts on MRFs by level of material deprivation. Therefore, understanding the influence of material deprivation on MRFs during the pandemic is key to tailoring future public health interventions promoting health and preventing cancer and chronic disease.

RéSUMé: OBJECTIFS: Notre étude contribue aux preuves empiriques en examinant l'impact de la première et de la deuxième vague de la pandémie de COVID-19 sur les facteurs de risque modifiables (FRM) et en déterminant si ces tendances diffèrent selon le niveau de défavorisation matérielle chez les personnes vivant en Alberta. MéTHODE: À l'aide des données d'une enquête de santé transversale provinciale répétée (Alberta Community Health Survey [ACHS] : 2018-2021), nous avons mené des analyses de régression logistique pour étudier les impacts de la pandémie de COVID-19 sur le respect des directives nationales pour quatre FRM (tabagisme, activité physique, consommation de fruits et légumes, consommation d'alcool) (n = 11 249). Nous avons comparé les changements populationnels dans les FRM une année avant la pandémie de COVID-19 (mars 2019 à février 2020) et une année durant la pandémie (mars 2020 à février 2021) en Alberta. Nous avons aussi cherché à déterminer si ces tendances différaient selon un indicateur de défavorisation matérielle. RéSULTATS: Comparativement à la période ayant précédé la COVID-19, le rapport de cotes entièrement ajusté pour le respect des directives de consommation de fruits et légumes recommandées (RC = 0,42) a diminué durant la pandémie. Les personnes aux prises avec une importante défavorisation matérielle ont présenté une probabilité plus faible de respecter les directives recommandées pour l'activité physique (RC = 0,65) et une probabilité accrue de ne pas être des consommateurs actuels de produits du tabac (OR = 1,36) durant la pandémie qu'avant la pandémie. CONCLUSION: Pour l'ensemble de la population, nos analyses de l'ACHS montrent que la première année de la pandémie de COVID-19 a eu très peu d'impact sur les FRM, sauf pour la consommation de fruits et légumes. Pourtant, la stratification des résultats montre des écarts significatifs dans les impacts de la pandémie sur les FRM selon le niveau de défavorisation matérielle. Il est donc essentiel de comprendre l'influence de la défavorisation matérielle sur les FRM durant la pandémie pour adapter les futures interventions de promotion de la santé et de prévention du cancer et des maladies chroniques.

Considering context: Adaptive elements of a simulation program to improve primary care safety during the COVID-19 pandemic in Alberta, Canada.

BACKGROUND: Globally, primary care (PC) has been central to the COVID-19 response. The pandemic has strained PC systems and introduced novel infection prevention and control (IPC) risks to the provision of safe, accessible in-person care. Specifically, the implementation of IPC guidance developed outside of PC into its operational context has proved challenging. METHODS: Our team of "action researchers" developed an innovative virtual tabletop simulations (TTS) intervention which assisted PC teams as they adapted, implemented, and integrated IPC guidance into their specific clinical contexts. While we have detailed the "technical" elements of the TTS program elsewhere, this paper examines the specific "adaptive" elements that made this intervention successful in the high-income country context of Alberta, Canada. RESULTS: Multiple factors influenced the uptake of this program in our Albertan setting, including: cultural geography; approach to financing and delivering PC; and policies and cultural norms supporting PC integration, medical education and research, and egalitarian teamwork. CONCLUSIONS: Virtual TTS may provide substantial benefits to IPC and safety improvements in PC settings globally. However, the specific technical and adaptive elements of our Albertan TTS program might, or might not, make these a viable IPC intervention for adapting, spreading, and scaling to other settings.

Trends in osteoporosis care patterns during the COVID-19 pandemic in Alberta, Canada.

PURPOSE/INTRODUCTION: The objective of this study was to describe osteoporosis-related care patterns during the coronavirus disease 2019 (COVID-19) pandemic in Alberta, Canada, relative to the 3-year preceding. METHODS: A repeated cross-sectional study design encompassing 3-month periods of continuous administrative health data between March 15, 2017, and September 14, 2020, described osteoporosis-related healthcare resource utilization (HCRU) and treatment patterns. Outcomes included patients with osteoporosis-related healthcare encounters, physician visits, diagnostic and laboratory test volumes, and treatment initiations and disruptions. The percent change between outcomes was calculated, averaged across the control periods (2017-2019), relative to the COVID-19 periods (2020). RESULTS: Relative to the average control March to June period, all HCRU declined during the corresponding COVID-19 period. There was a reduction of 14% in patients with osteoporosis healthcare encounters, 13% in general practitioner visits, 9% in specialist practitioner visits, 47% in bone mineral density tests, and 13% in vitamin D tests. Treatment initiations declined 43%, 26%, and 35% for oral bisphosphonates, intravenous bisphosphonates, and denosumab, respectively. Slight increases were observed in the proportion of patients with treatment disruptions. In the subsequent June to September period, HCRU either returned to or surpassed pre-pandemic levels, when including telehealth visits accounting for 33-45% of healthcare encounters during the COVID periods. Oral bisphosphonate treatment initiations remained lower than pre-pandemic levels. CONCLUSIONS: This study demonstrates the COVID-19 pandemic and corresponding public health lockdowns further heightened the "crisis" around the known gap in osteoporosis care and altered the provision of care (e.g., use of telehealth and initiation of treatment). Osteoporosis has a known substantial care and management disparity, which has been classified as a crisis. The COVID-19 pandemic created additional burden on osteoporosis patient care with healthcare encounters, physician visits, diagnostic and laboratory tests, and treatment initiations all declining during the initial pandemic period, relative to previous years.

Trends in osteoporotic fracture and related in-hospital complications during the COVID-19 pandemic in Alberta, Canada.

Fragility fractures (i.e., low-energy fractures) account for most fractures among older Canadians and are associated with significant increases in morbidity and mortality. Study results suggest that low-energy fracture rates (associated with surgical intervention and outcomes) declined slightly, but largely remained stable in the first few months of the COVID-19 pandemic. PURPOSE/INTRODUCTION: This study describes rates of low-energy fractures, time-to-surgery, complications, and deaths post-surgery in patients with fractures during the coronavirus disease (COVID-19) pandemic in Alberta, Canada, compared to the three years prior. METHODS: A repeated cross-sectional study was conducted using provincial-level administrative health data. Outcomes were assessed in 3-month periods in the 3 years preceding the COVID-19 pandemic and in the first two 3-month periods after restrictions were implemented. Patterns of fracture- and hospital-related outcomes over the control years (2017-2019) and COVID-19 restrictions periods (2020) were calculated. RESULTS: Relative to the average from the control periods, there was a slight decrease in the absolute number of low-energy fractures (n = 4733 versus n = 4308) during the first COVID-19 period, followed by a slight rise in the second COVID-19 period (n = 4520 versus n = 4831). While the absolute number of patients with low-energy fractures receiving surgery within the same episode of care decreased slightly during the COVID-19 periods, the proportion receiving surgery and the proportion receiving surgery within 24 h of admission remained stable. Across all periods, hip fractures accounted for the majority of patients with low-energy fractures receiving surgery (range: 58.9-64.2%). Patients with complications following surgery and in-hospital deaths following fracture repair decreased slightly during the COVID-19 periods. CONCLUSIONS: These results suggest that low-energy fracture rates, associated surgeries, and surgical outcomes declined slightly, but largely remained stable in the first few months of the pandemic. Further investigation is warranted to explore patterns during subsequent COVID-19 waves when the healthcare system experienced severe strain.

Tracking Emergence and Spread of SARS-CoV-2 Omicron Variant in Large and Small Communities by Wastewater Monitoring in Alberta, Canada.

Wastewater monitoring of SARS-CoV-2 enables early detection and monitoring of the COVID-19 disease burden in communities and can track specific variants of concern. We determined proportions of the Omicron and Delta variants across 30 municipalities covering >75% of the province of Alberta (population 4.5 million), Canada, during November 2021-January 2022. Larger cities Calgary and Edmonton exhibited more rapid emergence of Omicron than did smaller and more remote municipalities. Notable exceptions were Banff, a small international resort town, and Fort McMurray, a medium-sized northern community that has many workers who fly in and out regularly. The integrated wastewater signal revealed that the Omicron variant represented close to 100% of SARS-CoV-2 burden by late December, before the peak in newly diagnosed clinical cases throughout Alberta in mid-January. These findings demonstrate that wastewater monitoring offers early and reliable population-level results for establishing the extent and spread of SARS-CoV-2 variants.