BCG vaccine fine powder. Sometimes the powder is sealed with vacuum in a glass ampoule. Such a glass ampoule has to be opened slowly to prevent the airflow from blowing out the powder. Then the powder has to be diluted with saline water before injecting. The history of BCG is tied to that of smallpox. Jean Antoine Villemin first recognized bovine tuberculosis in 1854 and transmitted it, and Robert Koch first distinguished "Mycobacterium bovis" from "Mycobacterium tuberculosis". Following the success of vaccination in preventing smallpox, established during the 18th century, scientists thought to find a corollary in tuberculosis by drawing a parallel
Inoculation theory field itself is meant to act to the public, their opinions, and their actions. It is especially useful with an audience who already has an opinion on a brand. Inoculation theory is the perfect way to convince already faithful customers that they are making the right choice in trusting your company and to keep the customer coming back in the future. For example, Apple and their "Get A Mac" campaign. This campaign did a great job of following the inoculation theory in targeting those who already preferred Mac computers. The series of ads pit out in the duration of the