IFNG and infection: However, in this study, we only investigated the functionality of CD8+ T‐cell responses in patients with acute DENV2 infection, as this was the only circulating serotype during this time period in Sri Lanka.31 Although in our previous study, we did not observe any differences in the frequency of IFNγ producing DENV‐specific T cells in acute DENV1 and DENV2 infection, it would be important to study the polyfunctionality of the DENV‐specific T‐cell responses during infections with different DENV serotypes.