IFNGR1 and infection: Since KitW-sh/W-sh Ifnar1−/− Ifngr1+/+ and KitW-sh/W-sh Ifnar1−/− Ifngr1−/− mice were infected with DENV2 in the subsequent experiments, we also quantified the viremia on day 3 post-infection for this group, during acute infection, and on day 10 post-infection to check for viral clearance.