BCG vaccine extensively used even in countries where efficacy against pulmonary tuberculosis is negligible. A number of possible reasons for the variable efficacy of BCG in different countries have been proposed. None have been proven, some have been disproved, and none can explain the lack of efficacy in both low-TB burden countries (US) and high-TB burden countries (India). The reasons for variable efficacy have been discussed at length in a WHO document on BCG. BCG has protective effects against some non-tuberculosis mycobacteria. BCG has been one of the most successful immunotherapies. BCG vaccine has been the "standard of care for patients with
Inoculation theory of peer pressure, which can lead to smoking, underage drinking, and other harmful behaviors (Godbold, L. C., & Pfau, M., 2000). While there are many studies that have been conducted comparing different treatments of inoculation, there is one specific comparison that is mentioned throughout various studies. This is the comparison between what is known as refutational same and refutational different messages. A refutational same message is an inoculation treatment that refutes specific potential counterarguments that will appear in the subsequent persuasion message, while refutational different treatments are refutations that are not the same as those present in the impending persuasive