At time of testing. Most of these showed symptoms later on. That's not enough to estimate how that affects the spread of the disease however. What's interestin

At time of testing. Most of these showed symptoms later on. That's not enough to estimate how that affects the spread of the disease however. What's interesting is how contagious {a,pre}symptomatic people are. They are probably less contagious than people who developed symptoms, but just how much remains to be seen.