Vaccines can be defined as a substance that provides immunity against diseases by stimulating the production of antibodies. Vaccines are made from the causative agent, in other words, the same virus that causes the illness is used, but it is weakened and treated to act as an antigen without causing harm to the body. When vaccines enter the body, the immune system remembers the virus. Therefore, if that same virus entered the body, the immune system would have already developed antibodies against the virus and would be able to fight off the disease. Vaccinations generally protect the body from diseases that may cause disabilities or fatality.
Furthermore, vaccines help boost the body’s natural defense system to fight against diseases and viruses. Getting a vaccine may be much safer to develop antibodies against a virus rather than suffering from the virus. Vaccines may prevent one or more than one viruses and diseases. For example, MMR vaccine may fight against measles, mumps and…show more content… Few types of vaccines are live virus vaccines, inactivated vaccines, toxoid vaccines and Biosynthetic vaccines. Live virus vaccines use the weakened form of the virus. MMR vaccine and varicella (chickenpox) vaccine are examples. Inactivated vaccines are made from a protein or other small pieces taken from a virus or bacteria, the flu vaccine is an example. Toxoid vaccines contain a toxin or chemical made by the bacteria or virus. They make you immune to the harmful effects of the infection, instead of to the infection itself. Examples are diphtheria and tetanus vaccines. Biosynthetic vaccines contain manmade substances that are very similar to pieces of the virus or