BCG vaccine 400 per 100,000 in that higher risk context). The age of the person and the frequency with which BCG is given has always varied from country to country. BCG is prepared from a strain of the attenuated (virulence-reduced) live bovine tuberculosis bacillus, "Mycobacterium bovis", that has lost its ability to cause disease in humans. Because the living bacilli evolve to make the best use of available nutrients, they become less well-adapted to human blood and can no longer induce disease when introduced into a human host. Still, they are similar enough to their wild ancestors to provide some degree of
Inoculation theory a Mac or a Windows-based PC computer or if one should support gay marriage. Implementing inoculation theory in studies of contemporary social issues (from mundane to controversial social issues), the variety and resurgence of studies using inoculation theory helps bolster the effectiveness and utility of the theory and provides support that it can be used to strengthen and/or predict attitudes. McGuire led a series of experiments assessing inoculation's efficacy and adding nuance to our understanding for how it works (for a review, see Compton, 2013; Compton & Pfau, 2005). Early studies (e.g., McGuire & Papageorgis, 1961) limited testing of inoculation