In 1998, a “groundbreaking” study titled “Ileal-Lymphoid-Nodular Hyperplasia, Nonspecific Colitis, and Pervasive Developmental Disorders in Children” (now retracted), was published and would change forever the course of society's attitude towards vaccination. Published in The Lancet, a prestigious British medical journal, Dr. Wakefield (1998) and his team claimed to find a link between the measles, mumps and rubella vaccine and the development of autism and colitis in children . Although it has since been discredited, having been found guilty of fabricating its data (among other things), this article would leave a black mark on what has been called "one of the greatest success stories in health public” (Poland & Jacobson, 2001). . This in turn led to the resurgence of the “anti-vaccine movement”. Although there have been various anti-vaccine movements since the initial introduction of vaccination, they are beginning to gain momentum not only in North America, but also in Western Europe, Japan and Australia (Poland & Jacobson, 2001). The implications of this are enormous. Many countries are seeing a decline or even a “complete cessation of vaccination programs,” which, unsurprisingly, has led to an “increase in morbidity and mortality” (Poland & Jacobson, 2001). In 2010, the U.S. Center for Disease Control and Prevention issued an informational statement highlighting the dangers of not vaccinating due to personal beliefs. Between 2010 and 2013 alone, 834 cases of measles were reported, including 118 in 2011, the highest outbreak since 1996. In the United States, up to 20% of measles cases are hospitalized and in Countries where vaccinations are not widespread, the mortality rate is high. 3 cases out of 100. From 2000 to at least 2012...... middle of article ......intervention strategies (McEachan, Conner, Taylor & Lawton, 2011).Research using behavioral theory planned behavior to predict health-related behaviors In 2011 McEachan, Conner, Taylor, and Lawton conducted a meta-analysis including 206 studies testing the theory of planned behavior. They found that the theory of planned behavior is a good predictor of intention and behavior in many health behavior strategies (McEachan, Conner, Taylor, & Lawton, 2011). The researchers found that the type of behavior (for example, health-promoting or health-risk behaviors) was a moderator and that behaviors such as physical activity and diet-related behaviors were particularly well predicted. They also highlighted how age is a predictor of specific behaviors and relationships and concluded that this theory is a useful tool for designing intervention strategies to change health-related behaviors..