Asymptomatic People Have as Much Coronavirus as Symptomatic People

New research has found that people with a SARS-CoV-2 infection who are asymptomatic carry just as much virus in their throats, lungs, and noses as those who have symptoms. Some experts believe that asymptomatic people have caused the virus to spread more readily in communities.

Prevalence of Asymptomatic SARS-CoV-2 Infection

A new analysis from Scripps Research found 30-40% of people with coronavirus are asymptomatic, but that factor doesn’t mean they are immune from impacts of the disease. Research suggests patients who don’t show any symptoms may still suffer internal organ damage, including lung abnormalities.

Does the amount of virus you are exposed to determine how sick you'll get?

Is the initial dose of SARS-CoV-2 (the virus that causes COVID-19) related to the disease severity? At the moment, we just don't know. The only way to answer this question definitively is with "experimental challenge studies", which involves intentionally infecting healthy volunteers in order to study diseases and their treatments.