Before revision:  We find that for identification of individuals with COVID-19, array testing is usually the best choice  , while for estimation of COVID-19 prevalence rates in the total population, Gibbs-Gower testing usually provides the most accurate estimates given a fixed and relatively small number of tests  .
After revision:  We find that for identification of individuals with COVID-19, array testing is usually the best choice , while for estimation of COVID-19 prevalence rates in the total population, Gibbs-Gower testing usually provides the most accurate estimates given a fixed and relatively small number of tests . For instance, at a prevalence of up to 2\%, Dorfman testing gives an efficiency gain of 3.5--8; at 1\% prevalence, Gibbs-Gower testing gives an efficiency gain of 18, even when capping the pool size at a feasible number .