CD4 and infection: In mouse models, Plasmodium infection results in the differentiation of specific CD4+ T cells into T helper 1 (Th1) and follicular T helper (Tfh) cells, which have important functions for the control of Plasmodium infection during blood‐stage infection (Perez‐Mazliah & Langhorne, 2014; Lonnberg et al, 2017).