and make chemical adjustments; and to perform other related duties as required. E ssential Duties and Responsibil ities The duties and responsibilities listed below are intended to provide a representative list of the various types of work that may be performed. Specifications are not intended to reflect all duties performed within the job class, and incumbents may expect to perform other related similar duties.
A vaccine is a biological preparation that provides active acquired immunity to a particular disease. A vaccine typically contains an agent that resembles a disease-causing micro-organism and is often made from weakened or killed forms of the microbe, its toxins or one of its surface proteins.
The purpose of all vaccines is to trigger an immune response without causing a disease. Vertebrate immune systems have the ability to produce specific immune responses to specific antigens.Antigens are structures on the surface of a pathogen that the immune system can recognize.Once the immune system has been exposed to a pathogen and created an immune response to the pathogen, it can be said to have developed immunity to that pathogen.For the rest of the life of the organism the immune system can quickly produce antibodies in response to the antigens of the pathogen.ntigens are structures on the surface of a pathogen that the immune system can recognize. Once the immune system has been exposed to a pathogen and created an immune response to the pathogen, it can be said to have developed immunity to that pathogen.