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.
Cancer vaccines belong to a class of substances known as biological response modifiers. Biological response modifiers work by stimulating or restoring the immune systemâs ability to fight infections and disease. There are two broad types of cancer vaccines: 1  Preventive (or prophylactic) vaccines, which are intended to prevent cancer from developing in healthy people. 2  Treatment (or therapeutic) vaccines, which are intended to treat an existing cancer by strengthening the bodyâs natural immune response against the cancer (9).