As the world continues its battle against infectious diseases, vaccines have become one of our most powerful tools in maintaining public health. But as viruses evolve, new variants emerge, raising questions about whether vaccines can keep pace. The good news is that vaccines play a crucial role in preventing these variants, offering protection not just against known strains but also against future mutations. But how exactly do vaccines tackle such an ever-changing landscape? Let’s dive deeper into the science and strategy behind this vital defence.