What is the purpose of vaccination?

Vaccination is primarily designed to prevent an illness rather than treat it once it has occurred. When an individual is vaccinated, they receive a substance that stimulates their immune system to recognize and fight off specific pathogens, such as viruses or bacteria. This process helps the body develop immunity to the disease without causing the illness itself.

In contrast, treating an illness would involve administering medications or therapies after the disease has already taken hold, while alleviating symptoms focuses on relieving symptoms of an illness rather than addressing its cause. Diagnosing a condition pertains to identifying a disease or ailment, which is an entirely different process. Vaccination is a proactive measure aimed at reducing the risk of infections and outbreaks, thereby contributing to overall public health.