Vaccination



**//How Vaccines Work////://** Vaccinations are one of the most effective methods in preventing viruses from having an overwhelming and negative impact on human society. Vaccinations work on the principle of developing immunity to a particular virus, by introducing a weakened or inactivated version of it to the host.

**//History://** The concept of vaccination can be seen throughout history. It is documented that the Chinese possessed a knowledge of using inoculation against smallpox as early as 1000 CE. With advances in technology, breakthrough research was conducted throughout the field of virology, and resulted in new methods to create and produce influenza vaccines (History of Vaccines, 2011).

//Below is timeline detailing the major events in vaccination research throughout time://
 * = Early Chinese Inoculation ||= Inoculation spreads to Europe ||= Edward Jenner's Discoveries ||= First Influenza Vaccines ||= New influenza Vaccines developed ||
 * = 1000 CE ||= 1717 ||= 1796 ||= 1940's ||= 2003 ||

<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">**//Types of Vaccines://** <span style="display: block; font-family: 'Times New Roman',Times,serif; font-size: 110%;">There are many different kinds of vaccines currently implemented to fight many different virus types. However, there are only two main types of vaccines used for influenza, these are live, attenuated vaccines and inactivated vaccines. These different vaccine types are created through distinctively different processes. The most commonly used vaccine type for influenza is inactivated vaccines, although new attenuated vaccines have recently been developed and are very promising. <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">**//Seasonal "Flu shot"://** <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">The seasonal flu shot is a very important mechanism that allows immunisation against influenza on a global scale. The seasonal influenza vaccine is a co-ordinated international attempt to prevent the otherwise drastic effect influenza can have on humanity. The seasonal vaccine production is egg-based, an is one of the limiting factors for production times at the current date.

<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">