What is the main intention behind using vaccines?

The main intention behind using vaccines is to prevent diseases. Vaccines work by stimulating the immune system to recognize and combat specific pathogens, such as viruses or bacteria. When a vaccine is administered, it introduces a harmless component of the pathogen (like a weakened or inactive form of the germ, or a piece of its genetic material), which helps the immune system to develop a memory for that pathogen. As a result, if the individual is later exposed to the actual disease-causing organism, their immune system can respond more effectively and rapidly to prevent infection or reduce the severity of the disease.

While alleviating symptoms, curing diseases, or replacing medications may be important aspects of medical care, they do not represent the primary goal of vaccination. Vaccines aim specifically to prevent the onset of diseases by equipping the immune system with the tools necessary to fight infections more effectively, thereby reducing the incidence of disease and improving public health outcomes.