“…Among several factors known to be associated with such changes is seropositivity to persistent viral infections such as cytomegalovirus (CMV) [ 10 ]. CMV infection is known to drive T cells toward oligoclonality, end-stage differentiation and replicative senescence [ 11 , 12 ], which, in elderly individuals, may contribute to increased susceptibility to infectious, neoplastic and degenerative diseases [ 13 , 14 ].…”