<http://schema.org/description>
"Cities have always been a magnet to migrants. In 2010, a tipping point was reached for the first time when, according to the World Health Organization, the majority of the world's population lived in cities. By 2050, seven out of 10 people will have been born in \u2013 or migrated to \u2013 a city. One hundred years ago, that figure was two out of 10."^^<http://www.w3.org/2001/XMLSchema#string>
<http://medicalxpress.com/news/2014-03-pathogen-migratory-pattern-today.html>