1. Contact tracing.
2. Can be used to test if a vaccine is working during a clinical trial (70 of them ongoing right now, I believe)
3. Inform public policy makers about rate of asymptomatic cases + previous infections/exposures =informed decision making
So, for all those out there screaming, "I don't care, I just want to be tested!!", what are the consequences of a bad test?
demonstrates that reliable IgG seroconversion didn't happen until 2 weeks after disease onset (although this seroconversion has remained difficult to determine).