McDade developed and validated a method for quantifying SARS-CoV-2 IgG antibodies in finger stick dried blood spot samples. This approach allows people to self-collect samples from home, and then mail them to the lab for analysis. McDade’s scientific aim and public health goal is to expand understanding of predictors of community transmission and levels of immunity across racial, ethnic and class-based disparities both in terms of likelihood of infection and severity of infection.