The proportions of effector memory TEM cells (CD45RO+CCR7-) were increased significantly on day 1 and day 7 after COVID-19 positivity, compared to healthy controls (P<0.05, Figure 3C); the proportions of TEM cells then decreased on day 28 and a majority of patients had comparable levels as the controls by this time point. The gene discussed is CCR7; the disease is COVID-19.