<http://schema.org/about>
"The flu shot does not give you the flu, most of the time. It's the best way to prevent getting the flu, says the CDC. And the advantages of the flu vaccine far"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/health/fitness-well-being/stories/the-truth-about-getting-the-flu-shot?page=5>