A rapid antigen test (RAT), sometimes called a rapid antigen detection test (RADT), antigen rapid test (ART), or loosely just a rapid test, is a rapid diagnostic test suitable for point-of-care testing that directly detects the presence or absence of an antigen. RATs are a type of lateral flow test detecting antigens, rather than antibodies or nucleic acid. Rapid tests generally give a result in 5 to 30 minutes, require minimal training or infrastructure, and have significant cost advantages. Rapid antigen tests for the detection of SARS-CoV-2, the virus that causes COVID-19, have been commonly used during the COVID-19 pandemic.
COVID-19 testing involves analyzing samples to assess the current or past presence of SARS-CoV-2. The two main types of tests detect either the presence of the virus or antibodies produced in response to infection. Molecular tests for viral presence through its molecular components are used to diagnose individual cases and to allow public health authorities to trace and contain outbreaks. Antibody tests instead show whether someone once had the disease. They are less useful for diagnosing current infections because antibodies may not develop for weeks after infection. It is used to assess disease prevalence, which aids the estimation of the infection fatality rate.
The COVID-19 pandemic in Canada is part of the ongoing worldwide pandemic of coronavirus disease 2019. It is caused by severe acute respiratory syndrome coronavirus 2. Most cases over the course of the pandemic have been in Ontario, Quebec, British Columbia and Alberta. Confirmed cases have been reported in all of Canada's provinces and territories.
The COVID-19 pandemic in Ontario was a viral pandemic of coronavirus disease 2019 (COVID-19), a novel infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The first confirmed case of COVID-19 in Canada was announced on January 25, 2020, involving a traveller who had recently returned to Toronto from travel in China, including Wuhan. Ontario has had the largest number of confirmed COVID-19 cases among Canada's provinces and territories, but due to having the largest population, only ranks sixth adjusted per capita. Ontario surpassed one million lab-confirmed COVID-19 cases on January 24, 2022; one day before the anniversary of the first confirmed case on January 25, 2020.
Bonnie J. Fraser Henry is a Canadian physician and public servant who has been the provincial health officer at the British Columbia Ministry of Health since 2014. Henry is also a clinical associate professor at the University of British Columbia. She is a specialist in public health and preventive medicine, and is a family doctor. In her role as provincial health officer, Henry notably led the response to COVID-19 in British Columbia (BC).
The COVID-19 pandemic has affected many scientific and technical institutions globally, resulting in lower productivity in a number of fields and programs. However, the impact of the pandemic has also led to the opening of several new research funding lines for government agencies around the world.
The COVID Tracking Project was a collaborative volunteer-run effort to track the ongoing COVID-19 pandemic in the United States. It maintained a daily-updated dataset of state-level information related to the outbreak, including counts of the number of cases, tests, hospitalizations, and deaths, the racial and ethnic demographic breakdowns of cases and deaths, and cases and deaths in long-term care facilities.
Eileen Patricia de Villa is an American-Canadian physician and public servant who has served as Medical Officer of Health for the City of Toronto since 2017, leading the Toronto Public Health unit.
Allison Joan McGeer is a Canadian infectious disease specialist in the Sinai Health System, and a professor in the Department of Laboratory Medicine and Pathobiology at the University of Toronto. She also appointed at the Dalla Lana School of Public Health and a Senior Clinician Scientist at the Lunenfeld-Tanenbaum Research Institute, and is a partner of the National Collaborating Centre for Infectious Diseases. McGeer has led investigations into the severe acute respiratory syndrome outbreak in Toronto and worked alongside Donald Low. During the COVID-19 pandemic, McGeer has studied how SARS-CoV-2 survives in the air and has served on several provincial committees advising aspects of the Government of Ontario's pandemic response.
Helen Branswell is a Canadian infectious diseases and global health reporter at Stat News. Branswell spent fifteen years as a medical reporter at The Canadian Press, where she led coverage of the Ebola, Zika, SARS and swine flu pandemics. She joined Stat News at its founding 2015, leading the website's coverage of the ongoing COVID-19 pandemic.
The COVID-19 pandemic is an ongoing viral pandemic of coronavirus disease 2019 (COVID-19), a novel infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The pandemic has affected the Cities of Mississauga and Brampton, and the Town of Caledon, within the Regional Municipality of Peel. As part of the larger closure decisions in Ontario, a stay-at-home order shuttered all nonessential businesses, and caused event cancellations.
The COVID-19 pandemic in Toronto was a viral pandemic of coronavirus disease 2019 (COVID-19), a novel infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), localized in Toronto. Toronto is the most populous city in Canada, and the fourth most populous city in North America.
COVID-19 rapid antigen tests or RATs, also frequently called COVID-19 lateral flow tests or LFTs, are rapid antigen tests used to detect SARS-CoV-2 infection (COVID-19). They are quick to implement with minimal training, cost a fraction of other forms of COVID-19 testing, and give users a result within 5–30 minutes. RATs have been used in several countries as part of mass testing or population-wide screening approaches. Many RATs can be used for self-testing, in which an individual "collects their own specimen… and interpret[s] their test result themselves".
Naheed Dosani is a palliative care physician based in Ontario, Canada, who founded and leads the Palliative Education and Care for the Homeless (PEACH) program. For his efforts in providing mobile healthcare to individuals with vulnerable housing or are homeless, Dosani has received a Meritorious Service Cross from the Governor General of Canada (2017), and a Canadian Medical Association Award for Young Leaders (2020).
The COVID-19 pandemic in New South Wales, Australia is part of the ongoing worldwide pandemic of the coronavirus disease 2019 caused by severe acute respiratory syndrome coronavirus 2. The first confirmed case in New South Wales was identified on 19 January 2020 in Sydney where three travellers returning from Wuhan, Hubei, China, tested positive for the virus.
The COVID-19 pandemic in Victoria is part of the ongoing worldwide pandemic of the coronavirus disease 2019 caused by severe acute respiratory syndrome coronavirus 2. The first confirmed case in the state of Victoria, also the first in Australia, was identified as being on 19 January 2020, when a man arrived by air from Wuhan, Hubei Province, China. His test results on 25 January confirmed he had COVID-19.
Lawrence C. Loh is a Canadian physician who is currently serving as executive director and Chief Executive Officer of the College of Family Physicians of Canada.
This article documents the chronology and epidemiology of SARS-CoV-2, the virus which causes the coronavirus disease 2019 (COVID-19) and is responsible for the COVID-19 pandemic in Australia during 2022.
COVID-19 vaccination in Ontario began in December 2020, when the first doses of the Pfizer vaccine were administered. In February 2021, shipments for both the Pfizer and Moderna vaccines increased significantly. By May 2021, over 50 percent of Ontarians had received their first dose. By the beginning of 2022, over 80 percent of Ontarians had received their first dose.
The Ontario COVID-19 Science Advisory Table, often referred to simply as the Ontario Science Table (OST), was a group of independent scientific experts that provided advice to the Government of Ontario about COVID-19.
