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Early COVID-19 and Severity of Subsequent Omicron Infection in Ontario Canada. [PDF]

open access: yesInfluenza Other Respir Viruses
Kassee C   +16 more
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COVID-19

Seminars in Respiratory and Critical Care Medicine, 2023
COVID-19, the illness caused by SARS-CoV-2, became a worldwide pandemic in 2020. Initial clinical manifestations range from asymptomatic infection to mild upper respiratory illness but may progress to pulmonary involvement with hypoxemia and, in some cases, multiorgan involvement, shock, and death.
Charles S, Dela Cruz, Charles, Feldman
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Characteristics of and Important Lessons From the Coronavirus Disease 2019 (COVID-19) Outbreak in China: Summary of a Report of 72 314 Cases From the Chinese Center for Disease Control and Prevention.

Journal of the American Medical Association (JAMA), 2020
Epidemiologic Characteristics of the COVID-19 Outbreak Among a total of 72 314 case records (Box), 44 672 were classified as confirmed cases of COVID-19 (62%; diagnosis based on positive viral nucleic acid test result on throat swab samples), 16 186 as ...
Zunyou Wu, J. McGoogan
semanticscholar   +1 more source

WHO Declares COVID-19 a Pandemic

Acta bio-medica : Atenei Parmensis, 2020
The World Health Organization (WHO) on March 11, 2020, has declared the novel coronavirus (COVID-19) outbreak a global pandemic (1). At a news briefing , WHO Director-General, Dr.
D. Cucinotta, M. Vanelli
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