Content and Design Attributes of Antivaccination Web Sites

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Abstract
Vaccines are considered one of the greatest achievements of biomedical science and public health.1 However, during the last few decades an increasingly vocal antivaccination movement has challenged the safety and effectiveness of recommended vaccines.2,3 The extent of concern in the United States was highlighted by a national survey that found that although the majority of parents supported vaccination, 25% believed that too many vaccinations could weaken children's immune systems and 23% believed that children get too many immunizations.4