People infected with covid-19 but who show no symptoms appear to have similar levels of viral RNA in their noses and throats to those with mild symptoms
Source:
https://www.newscientist.com/article/2255028-covid-19-asymptomatic-people-may-be-more-infectious-than-we-thought/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home