EIF2A and infection: Our data demonstrated that USUV infection did not provoke a sustained increase in the levels of p-eIF2α, which is consistent with previous reports regarding mosquito-borne flaviviruses, as WNV [57,76], or ZIKV [34], even though, as mentioned above, it is not a common feature among flaviviruses, since other members of this genus, such as TBEV, showed an induction of eIF2α phosphorylation upon infection [47,77].