Background: Transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is known to occur among individuals who congregate in large groups, especially during indoor activities. Our objective was to provide a detailed clinical description of an outbreak of coronavirus disease 2019 (COVID-19) that occurred after a sporting and social event during the early days of the pandemic.
Methods: We conducted a descriptive study of a curling bonspiel in Edmonton held on Mar. 11-14, 2020. We used standardized interviews between Apr. 17 and May 5, 2020, to collect demographic data, travel history, symptoms (type, onset and duration), self-reported testing results for SARS-CoV-2 ribonucleic acid (RNA) using reverse transcription polymerase chain reaction (RT-PCR), and clinical outcomes. We also obtained results of convalescent SARS-CoV-2 immunoglobulin G serology.
Results: All 73 curlers (55 active health care workers) who participated in the bonspiel were interviewed for the study. Convalescent SARS-CoV-2 immunoglobulin G serology was completed in 62 (85%) participants. Of the 73 participants (55 [75%] male, median age 51 [range 26-79] yr, 58 [79%] physicians), 40 curlers (55%) tested positive for SARS-CoV-2 RNA by RT-PCR; an additional 16 participants developed symptoms but had negative swabs or were not tested (14 were probable cases), for a 74% attack rate (confirmed or probable cases). Anosmia with ageusia or dysgeusia occurred in 39 of 54 (72%) confirmed or probable cases. The clinical course was mild in most participants (1 emergency visit, no hospital admissions). Transmission likely occurred from multiple individuals with minor nonspecific symptoms during the event, possibly during shared meals.
Interpretation: The 74% attack rate (confirmed or probable cases) highlights the infectivity of SARS-CoV-2 during sporting and social events. This reinforces the need for public health measures (masking, physical distancing and limiting the size of social gatherings) during future waves of COVID-19 in Canada.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8034378 | PMC |
| http://dx.doi.org/10.9778/cmajo.20200115 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Variation of the Risk Associated With Potentially Modifiable Risk Factors for Dementia Between Ethnic Groups Within One Country. A Retrospective Cohort Study Using Routinely Collected Health Data in Aotearoa New Zealand.
Int J Geriatr Psychiatry
January 2025
Division of Psychiatry, University College London, London, UK.
Introduction: While risk factor prevalence of individual risk factors for dementia varies between ethnic groups in New Zealand (NZ), it is not known whether the effect of these risks is the same in each group.
Methods: This retrospective cohort study identified incident cases of dementia. Cox regression models calculated the hazard ratio for dementia for each of the risk factors, after adjustment for age and sex.
Prodromal Parkinson's disease and subsequent risk of Parkinson's disease and mortality.
NPJ Parkinsons Dis
January 2025
Department of Nutrition and Food Hygiene, School of Public Health, Institute of Nutrition, Zhongshan Hospital, Fudan University, Shanghai, China.
Association of prodromal Parkinson's disease (PD) with risk of PD and risk of mortality in individuals with PD warrant investigation through large-scale prospective study. We included 501,475 participants without PD at baseline. Eight prodromal features were measured.
View Article and Find Full Text PDFGeneXpert MTB/RIF Ultra in Pediatric Tuberculosis: How Disease Characteristics Modify Test Performances.
Curr Pediatr Rev
January 2025
Department of Health Sciences, University of Florence, Florence, Italy.
Introduction: The diagnosis of pediatric tuberculosis (TB) is challenging, due to the lower sensitivity of microbiological tests, such as culture and microscopy, compared to their performance in adult cases. Guidelines have introduced molecular tests, including GeneXpert MTB/ RIF and GeneXpert MTB/RIF Ultra. These tests use a real-time polymerase chain reaction method and provide information on M.
View Article and Find Full Text PDFCampylobacter spp. in chicken meat from traditional markets in Peru and its impact measured through a quantitative microbiological risk assessment.
Food Res Int
January 2025
Department of Animal and Public Health, School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Av. Circunvalacion 2800, San Borja 15021, Lima 41, Peru; Tropical and Highlands Veterinary Research Institute, Universidad Nacional Mayor de San Marcos, Jr. 28 de Julio s/n, Jauja, 12150, Peru; Global Health Center, Universidad Peruana Cayetano Heredia, Av. Honorio Delgado 430, San Martín de Porres 15102, Lima 41, Peru. Electronic address:
Campylobacter is a major cause of foodborne gastroenteritis worldwide, with the mishandling of contaminated chicken meat among the main pathways for human infection. Granted the disease burden due to this pathogen, systematic assessments of its potential impact are necessary. The aims of this study were to evaluate both presence and load of Campylobacter in chicken meat sold in traditional markets, assess risk factors related with the infrastructure and hygienic conditions of market stalls, and evaluate control strategies for campylobacteriosis in Peru through a quantitative microbiological risk assessment (QMRA), a data-driven, systematic approach to quantitatively assess risks by integrating empirical contamination levels, microbial behavior, and consumer exposure.
View Article and Find Full Text PDFNomogram and randomized survival forest model for predicting sepsis risk in patients with cerebral infarction in the intensive care unit.
Diagn Microbiol Infect Dis
January 2025
Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China; Institute of Neurosurgery of People's Liberation Army of China (PLA), PLA's Key Laboratory of Critical Care Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China. Electronic address:
Background: To construct a nomogram and a Randomized Survival Forest (RSF) model for predicting the occurrence of sepsis in patients with cerebral infarction in intensive care units (ICUs).
Methods: A total of 1,963 patients were included from the Medical Information Mart for Intensive Care IV database version 2.0 (MIMIC-IV v2.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!