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The widespread presence of ACE-2 receptors in different organs facilitates the extrapulmonary infection by SARS-CoV-2, causing associated complications such as acute respiratory distress syndrome (ARDS), cytokine storm, blood clots [6, 9], and possibly psychological and neurological problems [10].
COVID-19 is caused by infection with the severe acute respiratory syndrome coronavirus 2, also called SARS-CoV-2. The coronavirus spreads mainly from person to person, even from someone who is infected but has no symptoms.
Coronavirus disease (COVID-19) is an infectious disease caused by the SARS-CoV-2 virus. Most people infected with the virus will experience mild to moderate respiratory illness and recover without requiring special treatment. However, some will become seriously ill and require medical attention.
In this study, the infectious mechanism of the coronavirus is explained with a focus on different variants and their respective mutations, which play a critical role in the increased transmissibility, infectivity, and immune escape of the virus.
Medical response. Variants. Economic impact and recession. Impacts. COVID-19 portal. v. t. e. Severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2) [2] is a strain of coronavirus that causes COVID-19, the respiratory illness responsible for the COVID-19 pandemic. [3] .
COVID-19 is the disease caused by the SARS-CoV-2 coronavirus. It usually spreads between people in close contact. COVID-19 vaccines provide strong protection against severe illness and death. Although a person can still get COVID-19 after vaccination, they are more likely to have mild or no symptoms.
What is COVID-19? What are the symptoms of COVID-19? What happens to people who get COVID-19? Who is most at risk of severe illness from COVID-19? Are there long-term effects of COVID-19? How can we protect others and ourselves if we don't know who is infected? When should I get a test for COVID-19? What test should I get to see if I have COVID-19?
