HORTICULTURE DEVELOPMENT OF‐ FICER(HDO) -2015 Vaccination is the administration of a vaccine to stimulate an individual's immune system to develop adaptive immunity to a specific infectious disease. Vaccines typically contain agents that resemble the disease-causing microorganism and are often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins. Transfusion involves transferring blood or blood components from one person to another. Inoculation is a broader term that can refer to the introduction of any substance into the body, including vaccines, but vaccination is the specific term for conferring resistance to disease. Intimation means to inform or announce.