BCG vaccine immunity against human tuberculosis. The BCG vaccine can be anywhere from 0 to 80% effective in preventing tuberculosis for a duration of 15 years; however, its protective effect appears to vary according to geography and the lab in which the vaccine strain was grown. A number of different companies make BCG, sometimes using different genetic strains of the bacterium. This may result in different product characteristics. OncoTICE, used for bladder instillation for bladder cancer, was developed by Organon Laboratories (since acquired by Schering-Plough, and in turn acquired by Merck & Co.). Pacis BCG, made from the Montréal (Institut Armand-Frappier) strain,
Inoculation theory inoculation's efficacy can be boosted with other persuasion processes, like reactance (Miller et al., 2013). Inoculation theory states that to prevent persuasion it is necessary to strengthen preexisting attitudes, beliefs, or opinions. First, the receiver must be made aware of the potential vulnerability of an existing position (e.g., attitude, belief). This establishes threat and initiates defenses to future attacks. The idea is that when a weak argument is presented in the inoculation message, processes of refutation or other means of protection will prepare for stronger arguments later. It is critical that the attack is strong enough to keep the receiver