CCR7 and infection: Interestingly, SARS-CoV-2-infected patients show low frequencies in some circulating DC subsets (CD1c+ cDCs and pDCs) and alterations in DCs homing (CCR7 and integrin β7) and activation (CD86 and PD-L1) cell surface antigens, which are not restored for more than 7 months after the acute phase of infection independently of previous hospitalization [37].