sentence: Lastly , we evaluated these experimental factors alongside clinical data to fully assess risk of viral reactivation.Previous work has demonstrated that a robust CD4 T-cell response to viral capsid proteins is associated with previously resolved BKPyV reactivation [ 24 , 31 – 33 ] , and an early post-transplant CD8 T-cell response [ 34 ] , specifically polyfunctional CD8 T-cells [ 35 ] is associated with viral control .