XK and influenza: They express two main surface antigens: hemagglutinin (HA) and neuraminidase (NA).[69] Genes expressing HA and NA are prone to point mutations that prevent the body's immune system from recognizing and protecting against them, allowing the new viruses to spread rapidly.[70] Transdermal delivery of influenza vaccines via MNs is expected to achieve cross‐protection against influenza viruses and achieve better prevention than current vaccines.