Vaccines

A vaccine is a biological preparation that provides immunity to an infectious disease. Vaccines contain a weakened or killed form of a virus or bacteria and can help a person develop immunity to an infection without actually having to suffer from the disease. Vaccines have been an integral part of public health for centuries and are considered one of the most effective means of controlling and eliminating life-threatening infectious diseases. Vaccines are widely used in both humans and animals and have saved countless lives. They are the most cost-effective form of public health intervention available and are credited with eradicating some of the most deadly and debilitating diseases.