BCG vaccine BCG was adopted by the Health Committee of the League of Nations (predecessor to the WHO). Because of opposition, however, it only became widely used after World War II. From 1945 to 1948, relief organizations (International Tuberculosis Campaign or Joint Enterprises) vaccinated over 8 million babies in eastern Europe and prevented the predicted typical increase of TB after a major war. BCG is very efficacious against tuberculous meningitis in the pediatric age group, but its efficacy against pulmonary tuberculosis appears to be variable. As of 2006, only a few countries do not use BCG for routine vaccination. Two countries that
Inoculation theory strengthen their original attitudes. It uses a threat on initial beliefs to trigger a person's desire to fight against the threat, ultimately reinforcing their attitude. William McGuire set out to conduct research “on ways of inducing resistance to persuasion, under the impression that while much experimental work was being done on factors that increased persuasive effectiveness, little was being done on ways of producing resistance to persuasion” (McGuire, 1964, p. 192). McGuire was motivated to study inoculation and persuasion as a result of the aftermath of the Korean War. Nine US prisoners of war, when given the opportunity, elected to