> we should have such a large testing capacity that testing symptomatic people isn't a stretch. We should, but we don't. Group testing dramatically expands the

> we should have such a large testing capacity that testing symptomatic people isn't a stretch. We should, but we don't. Group testing dramatically expands the number of people we can test. However group testing collapses at high prevalence. Since we expect people with fever and cough to be more likely COVID+ than the general population prevalence when we can only run a limited number of cases we'll inevitably miss more positives by testing people with symptoms.