In the event held in 2012, 65th World Health Assembly, Global Vaccine Action Plan (GVAP) was born to eradicate vaccine-preventable diseases. World Health Organization (WHO) accompanied by many of the governments all over the world is committed to join GVAP in the battle against infectious diseases. Making the routine immunizations actually work, introducing novel vaccines, accelerating the control process of vaccine-preventable diseases, and take a part in the development of research in vaccines and technologies are the purposes of GVAP.
Edward Jenner was the one who introduced the word vaccine while he magnificently prevent from smallpox using cowpox. With that being said, the term vaccine was inherited from Variolae vaccinae. The invention of vaccine was certainly made the world better. Before the innovation of vaccine, millions of people who were suffering from infectious diseases did not make it or in another word, dead. Vaccine indeed saves million people now. Vaccine protects us from the dangerous effects that brought by viruses and bacteria. With making us immune to those microbes, we can finally enjoy our life without the fear of serious harmful damages.
Immunization or vaccination is the action to inject vaccine into our body. If we are talking about real life, this vaccine acts as the experience from the past. We all learned from the things in the past whether it was good or bad experience. After that, we certainly will do the same or other way in the future to make something done. Vaccine is basically just like that. Attenuated or dead viruses or bacteria are injected into our body system. The immune system inside our body will identify and make a decision what to do to the foreign agent. And just like our past experiences, our immune system then learn how to encounter the foreign agent, recognize and attack it. Therefore, our body is already protected from the harmful effects if we ever exposed to the microbes later in life. Vaccine has four different types of injected agent. Measles, mumps, and rubella prevention is using live virus that already weakened to build the protection antibody. On the other hand, whooping cough is using killed vaccine which the viruses or bacteria have already inactivated. Moreover, the chemical substances such as toxin produced by viruses or bacteria can also create vaccine called toxoid vaccine which used in diphtheria and tetanus prevention. Last, artificial viruses or bacteria made in the lab which look identical to the real one are named biosynthetic vaccine, used to protect from Hepatitis B.