Vaccination is a process of introduction of the vaccine in the body. Vaccine term was taken from the word Vacca which means cow in Latin and the first vaccine was prepared by Edward Jenner. It helps in the development of immunity, immunity which is developed by vaccination is known as adaptive immunity or acquired immunity .e.g Vaccination against polio, Smallpox, Hep. B, Pneumonia, Typhoid etc.
Vaccination can be done by one of the three methods by injection or by oral or by aerosol. The vaccine can be a drug because it fulfills all the criteria of the drug. Vaccines are more helpful and cost-effective public health measures that prevent many diseases, such as smallpox, chicken pox, rabbis and many more diseases.
Type of Vaccination
Vaccines are not occurring naturally they are prepared in the laboratory. When vaccines are introduced in our body they produce an antigenic response, and antibody starts work against the antigen, known as a primary immune response. Antibodies are protein molecule produced in our body against an antigen. There are many types of antibodies one of them is memory cell which is responsible for the secondary immune response of the immune system.
The secondary immune response is the response of our immune system when the same antigen attacks again then our antibody produces rapidly antibody and kill them. Antigens are foreign particles when enters in our body they produce an immune response, these antigens can be a living thing like protozoa, a virus, a bacteria or a non-living thing like dust particles or a pollen etc.
Click: Childhood Infection
Vaccines prevent many diseases, therefore, children are vaccinated for many diseases, children are vaccinated because they have a weak immune system at the time of birth or up to the age of 2 years. At the time of birth and up to six months, so vaccines are given to the baby e.g. HEp.B, Tetanus are given just after the birth of a child. After that in the interval of some time period, they are vaccinated. Some vaccinations are of one time while some are of 2, 3 and 4 times, which gradually increase the immunity of the child. Any person of any age can be vaccinated.
Vaccination is also known as immunization since it provides immunity against diseases.