[Availability and quality of vaccines information on the Web: a systematic review and implication in Public Health].

Adherence to vaccination campaigns can be negatively influenced by Web presence of unreliable information. Aim of study is qualitative and quantitative evaluation of Italian WebPages contents about vaccinations to address prevention strategies in countries that, like Italy, wouldn't like vaccination to be mandatory any longer In August 2011 two researchers conducted a Systematic Review in Italian WebPages about vaccination risks. First 100 results of 9 common search engines have been combined; pro and against pages were compared (CHI2, p <0,05). 144 WebPages were analysed: 67% of them, often on top positions, was against vaccinations and 24% of them was written by Medical Doctors. All institutional pages (12%) were pro vaccinations but they resulted in less important positions. Against WebPages were different from pro ones in terms of use of emotional images, personal negative experiences, advertising purposes (books or alternative medicine products). Main criticism was: inefficacy, low safety profile and stakeholder's interests. This study would like to represent a useful tool for parents and Medical Doctors, especially because many of them are progressively more sceptical about vaccination practises. The great number of anti-vaccination movements on Italian Web should improve public health strategies in terms of "Evidence-Based prevention".