Wednesday, August 25, 2021

COVID-19 is most transmissible 2 days before and 3 days after symptoms appear


https://www.eurekalert.org/news-releases/926315

 

 News Release 24-Aug-2021
New study also finds that infected individuals are more likely to be asymptomatic if they contracted the virus from someone who was asymptomatic
Peer-Reviewed Publication
Boston University School of Medicine

 

Each wave of the pandemic has underscored just how gravely contagious COVID-19 is, but there is less clarity among experts on exactly when—and to what extent—infected individuals are most likely to spread the virus.

Now, a new study co-led by a Boston University School of Public Health (BUSPH) researcher has found that individuals infected with the virus are most contagious two days before, and three days after, they develop symptoms.

Published in the journal JAMA Internal Medicine, the study also found that infected individuals were more likely to be asymptomatic if they contracted the virus from a primary case (the first infected person in an outbreak) who was also asymptomatic. 

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