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.
Flu vaccines are routinely available for seasonal influenza, but these vaccines are not likely to be protective against flu caused by the H1N1 (formerly termed swine flu) virus. There is a separate vaccine against the H1N1 flu.There are two types of seasonal flu vaccines, the injection (with killed virus) and nasal spray vaccines (containing live but weakened virus). The vaccine is generally effective against the influenza virus within two weeks of administration.he vaccine is termed an attenuated vaccine because the viruses are weakened so that they do not cause severe flu symptoms. The nasal spray flu vaccine (LAIV) has been approved by the FDA for use in nonpregnant healthy people between two and 49 years of age.