2018). It has been found that the CCL19 gene is significantly different after noise exposure in GRAIL KO mice compared with WT mice, and it is suggested that downregulation of CCL19 may disrupt signaling to immune cells and reduce the induction of inflammatory cytokines. Thus, inflammatory cells are recruited to the noise‐damaged cochlea to counteract the noise‐induced hearing loss in GRAIL KO mice (Chuang et al. 2023). In addition, elevated circulating levels of CCL19 are also present in various infections (Tveita et al. 2022). Here, CCL19 is linked to infection.