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Virus and antibodies during asymptomatic SARS-CoV-2 infections

1 Comment / Basic virology, Information / By

Despite recent proclamations to the contrary by WHO, there is good evidence that individuals who are asymptomatically infected with SARS-CoV-2 can efficiently spread infection to others. The levels of virus and the immune response in asymptomatically infected individuals has not been well studied to understand the infection events taking place. A recent small study provides …

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Cigarette smoke and COVID-19

2 Comments / Basic virology, Information / By

Some evidence suggests that cigarette smokers are more likely to develop severe COVID-19 disease than non-smokers. Chronic smoke exposure appears to trigger the expansion of cell types in the respiratory tract that produce ACE2, the receptor for SARS-CoV-2. This observation provides a plausible hypothesis to explain why cigarette smokers might experience more severe COVID-19. A …

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The perfect storm

6 Comments / Basic virology, Gertrud Rey, Information / By

by Gertrud U. Rey A small subset of people are more vulnerable to severe complications and death resulting from SARS-CoV-2 infection. What causes this vulnerability? An increasing body of evidence suggests that patients suffering from severe COVID-19 often have one or more pre-existing conditions (co-morbidities). In an effort to describe the co-morbidities of COVID-19 patients …

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