BCG vaccine screened for active tuberculosis. BCG is also contraindicated in certain people who have IL-12 receptor pathway defects. BCG is given as a single intradermal injection at the insertion of the deltoid. If BCG is accidentally given subcutaneously, then a local abscess may form (a "BCG-oma") that can sometimes ulcerate, and may require treatment with antibiotics immediately, otherwise without treatment it could spread the infection causing severe damage to vital organs. However, it is important to note an abscess is not always associated with incorrect administration, and it is one of the more common complications that can occur with the vaccination.
Inoculation theory motivation to maintain current attitudes and beliefs, but weak enough that the receiver will refute the counterargument (Compton, 2013; McGuire, 1964). Inoculation has been proven successful through trials and research. This article highlights vital aspects of inoculation theory, however, it is not exhaustive–there is a large volume of quality research on the theory not mentioned. Finally, while numerous studies have tested and verified the efficacy of the inoculation process, there continues to be a need for refinement and elaboration. Inoculation theory is used today as part of the suite of tools used by those engaged in shaping or manipulating public