Immunostaining of COVID-19 brains revealed extensive activation of both microglia and astrocytes, severe damage of the blood–brain barrier (BBB) and various degrees of perivascular infiltration by predominantly CD14+/CD16+/CD141+/CCR7+/CD11c+ monocytes and occasionally CD4+/CD8+ T lymphocytes. This evidence concerns the gene CCR7 and COVID-19.