Research on herpes simplex virus (HSV) infections has highlighted the complex interplay between viral mechanisms and host immune responses. A study by Shankar et al. utilized cryoelectron microscopy to elucidate the structures of HSV DNA polymerase, revealing conformational dynamics that contribute to antiviral drug resistance, particularly against clinically used antivirals (ref: Shankar doi.org/10.1016/j.cell.2024.07.048/). Ford et al. expanded on immune responses by demonstrating that immunotherapeutic HSV-2 vaccination significantly increased the representation of HSV-2-specific T cell receptors in the skin, suggesting a localized immune enhancement at sites of reactivation (ref: Ford doi.org/10.1172/jci.insight.179010/). In contrast, Tessema et al. found that mouse guanylate-binding proteins did not mediate antiviral activity against HSV in vitro or in mouse models, indicating potential limitations in the role of these proteins in HSV immunity (ref: Tessema doi.org/10.1038/s42003-024-06748-8/). Furthermore, Yeh et al. reported a long-term association between herpes zoster and subjective cognitive decline, suggesting that HSV infections may have broader implications beyond immediate clinical symptoms (ref: Yeh doi.org/10.1186/s13195-024-01511-x/). Overall, these studies underscore the multifaceted nature of HSV infections, where immune responses can be both enhanced through vaccination and complicated by viral resistance mechanisms.